[1455] | 1 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 2 | % Two-Way transmission and reception of data using WARPLab(SISO configuration) |
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| 3 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 4 | % Use WARPLab for two-way communication between two nodes. First node 1 |
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| 5 | % will transmit to node 2 and then node 2 will transmit to node 1. |
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| 6 | |
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| 7 | % The specific steps implemented in this script are the following |
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| 8 | |
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| 9 | % 0. Initializaton and definition of parameters |
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| 10 | % 1. Generate the vector of samples that node 1 will transmit to node 2 and |
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| 11 | % the vector of samples that node 2 will transmit to node 1, then download |
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| 12 | % the samples to the WARP boards (Sample Frequency is 40MHz) |
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| 13 | % 2. Prepare WARP boards for transmission and reception from node 1 to node 2 |
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| 14 | % and send trigger to start transmission and reception (trigger is the SYNC |
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| 15 | % packet) |
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| 16 | % 3. Disable the radios |
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| 17 | % 4. Prepare WARP boards for transmission and reception from node 2 to node 1 |
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| 18 | % and send trigger to start transmission and reception (trigger is the SYNC |
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| 19 | % packet) |
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| 20 | % 5. Disable the radios |
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| 21 | % 6. Read the received samples from the WARP boards |
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| 22 | % 7. Reset the boards |
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| 23 | % 8. Plot the transmitted and received data and close sockets |
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| 24 | |
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| 25 | % In this lab exercise you will write a matlab script that implements the |
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| 26 | % nine steps above. Part of the code is provided, some part of the code you |
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| 27 | % will write. Read the code below and fill in with your code wherever you |
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| 28 | % are asked to do so. |
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| 29 | |
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| 30 | % NOTE: To avoid conflict with other groups using the boards, please test |
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| 31 | % the code you write in this script in any of the following three ways: |
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| 32 | % |
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| 33 | % Option 1. Run this script from matlab's Command Window by entering the |
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| 34 | % name of the script (enter warplab_siso_example_TxRxTwoWay_WorkshopExercise |
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| 35 | % in matlab's Command Window). |
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| 36 | % Option 2. In the menu bar go to Debug and select Run. If there |
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| 37 | % are errors in the code, error messages will appear in the Command Window. |
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| 38 | % Option 3. Press F5. If the are errors in the code, error messages will |
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| 39 | % appear in the Command Window. |
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| 40 | % |
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| 41 | % DO NOT USE the Evaluate selection option and DO NOT run the script by |
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| 42 | % sections. To test any change, always run the whole script by following |
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| 43 | % any of the three options above. |
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| 44 | |
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| 45 | try, |
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| 46 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 47 | % Code to avoid conflict between users, only needed for the workshop, go to |
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| 48 | % step 0 below to start the initialization and definition of parameters |
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| 49 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 50 | % fid = fopen('c:\boards_lock.txt'); |
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| 51 | % |
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| 52 | % if(fid > -1) |
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| 53 | % fclose('all'); |
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| 54 | % errordlg('Boards already in use - Please try again!'); |
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| 55 | % return; |
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| 56 | % end |
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| 57 | % |
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| 58 | % !echo > c:\boards_lock.txt |
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| 59 | |
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| 60 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 61 | % 0. Initializaton and definition of parameters |
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| 62 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 63 | %Load some global definitions (packet types, etc.) |
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| 64 | warplab_defines |
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| 65 | |
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| 66 | % Create Socket handles and intialize nodes |
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| 67 | [socketHandles, packetNum] = warplab_initialize; |
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| 68 | |
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| 69 | % Separate the socket handles for easier access |
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| 70 | % The first socket handle is always the magic SYNC |
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| 71 | % The rest of the handles are the handles to the WARP nodes |
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| 72 | udp_Sync = socketHandles(1); |
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| 73 | udp_node1 = socketHandles(2); |
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| 74 | udp_node2 = socketHandles(3); |
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| 75 | |
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| 76 | % Define WARPLab parameters. |
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| 77 | %-------------------------------------------------------------------------% |
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| 78 | % USER CODE HERE |
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| 79 | |
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| 80 | % Create the following variables and assign them valid values: |
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| 81 | % Node1_TxDelay: Number of noise samples per Rx capture in node 1. In [0:2^14] |
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| 82 | % Node2_TxDelay: Number of noise samples per Rx capture in node 2. In [0:2^14] |
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| 83 | % Node1_TxLength: Length of transmission from node 2. In [0:2^14-1-Node2_TxDelay] |
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| 84 | % Node2_TxLength: Length of transmission from node 1. In [0:2^14-1-Node1_TxDelay] |
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| 85 | % CarrierChannel: Channel in the 2.4 GHz band. In [1:14] |
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| 86 | % Node1_Radio2_TxGain_BB: Tx Baseband Gain Node1 Radio2. In [0:3] |
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| 87 | % Node1_Radio2_TxGain_RF: Tx RF Gain Node1 Radio2. In [0:63] |
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| 88 | % Node1_Radio2_RxGain_BB: Rx Baseband Gain Node1 Radio2. In [0:31] |
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| 89 | % Node1_Radio2_RxGain_RF: Rx RF Gain Node1 Radio2. In [1:3] |
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| 90 | % Node2_Radio2_TxGain_BB: Tx Baseband Gain Node2 Radio2. In [0:3] |
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| 91 | % Node2_Radio2_TxGain_RF: Tx RF Gain Node2 Radio2. In [0:63] |
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| 92 | % Node2_Radio2_RxGain_BB: Rx Baseband Gain Node2 Radio2. In [0:31] |
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| 93 | % Node2_Radio2_RxGain_RF: Rx RF Gain Node2 Radio2. In [1:3] |
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| 94 | |
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| 95 | %-------------------------------------------------------------------------% |
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| 96 | |
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| 97 | TxMode = 0; % Transmission mode. In [0:1] |
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| 98 | % 0: Single Transmission |
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| 99 | % 1: Continuous Transmission. Tx board will continue |
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| 100 | % transmitting the vector of samples until the user manually |
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| 101 | % disables the transmitter. |
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| 102 | |
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| 103 | % Download the WARPLab parameters to the WARP nodes. |
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| 104 | % The nodes store the TxDelay, TxLength, and TxMode parameters in |
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| 105 | % registers defined in the WARPLab sysgen model. The nodes set radio |
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| 106 | % related parameters CarrierChannel, TxGains, and RxGains, using the |
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| 107 | % radio controller functions. |
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| 108 | % Download parameters to node 1 |
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| 109 | warplab_writeRegister(udp_node1,TX_DELAY,Node1_TxDelay); |
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| 110 | warplab_writeRegister(udp_node1,TX_LENGTH,Node1_TxLength); |
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| 111 | warplab_writeRegister(udp_node1,TX_MODE,TxMode); |
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| 112 | warplab_setRadioParameter(udp_node1,CARRIER_CHANNEL,CarrierChannel); |
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| 113 | |
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| 114 | %-------------------------------------------------------------------------% |
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| 115 | % USER CODE HERE |
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| 116 | |
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| 117 | % Download 'Node1_Radio2_TxGain_RF' and 'Node1_Radio2_TxGain_BB' parameters |
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| 118 | % to node 1 using the 'warplab_setRadioParameter' function. |
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| 119 | |
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| 120 | % Hints: |
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| 121 | |
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| 122 | % 1. The first argument of the 'warplab_setRadioParameter' function |
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| 123 | % identifies the node to which the parameter will be downloaded to. |
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| 124 | % The id or handle to node 1 is 'udp_node1'. |
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| 125 | |
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| 126 | % 2. The second argument of the 'warplab_setRadioParameter' function |
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| 127 | % identifies the parameter that will be downloaded. The |
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| 128 | % 'Node1_Radio2_TxGain_RF' and 'Node1_Radio2_TxGain_BB' parameters are |
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| 129 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
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| 130 | % download these parameters is 'RADIO2_TXGAINS' |
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| 131 | |
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| 132 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
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| 133 | % value the parameter must be set to. The 'Node1_Radio2_TxGain_RF' and |
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| 134 | % 'Node1_Radio2_TxGain_BB' parameters are downloaded in one call of the |
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| 135 | % 'warplab_setRadioParameter', these two values must be combined for |
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| 136 | % download in the following way: |
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| 137 | % (Node1_Radio2_TxGain_RF + Node1_Radio2_TxGain_BB*2^16) |
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| 138 | |
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| 139 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
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| 140 | % exercises. |
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| 141 | |
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| 142 | %-------------------------------------------------------------------------% |
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| 143 | |
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| 144 | %-------------------------------------------------------------------------% |
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| 145 | % USER CODE HERE |
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| 146 | |
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| 147 | % Download 'Node1_Radio2_RxGain_BB' and 'Node1_Radio2_RxGain_RF' parameters |
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| 148 | % to node 1 using the 'warplab_setRadioParameter' function. |
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| 149 | |
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| 150 | % Hints: |
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| 151 | |
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| 152 | % 1. The first argument of the 'warplab_setRadioParameter' function |
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| 153 | % identifies the node to which the parameter will be downloaded to. |
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| 154 | % The id or handle to node 1 is 'udp_node1'. |
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| 155 | |
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| 156 | % 2. The second argument of the 'warplab_setRadioParameter' function |
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| 157 | % identifies the parameter that will be downloaded. The |
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| 158 | % 'Node1_Radio2_RxGain_BB' and 'Node1_Radio2_RxGain_RF' parameters are |
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| 159 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
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| 160 | % download these parameters is 'RADIO2_RXGAINS' |
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| 161 | |
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| 162 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
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| 163 | % value the parameter must be set to. The 'Node1_Radio2_RxGain_BB' and |
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| 164 | % 'Node1_Radio2_RxGain_RF' parameters are downloaded in one call of the |
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| 165 | % 'warplab_setRadioParameter', these two values must be combined for |
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| 166 | % download in the following way: |
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| 167 | % (Node1_Radio2_RxGain_BB + Node1_Radio2_RxGain_RF*2^16) |
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| 168 | |
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| 169 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
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| 170 | % exercises. |
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| 171 | |
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| 172 | %-------------------------------------------------------------------------% |
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| 173 | |
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| 174 | % Download parameters to node 2 |
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| 175 | warplab_writeRegister(udp_node2,TX_DELAY,Node2_TxDelay); |
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| 176 | warplab_writeRegister(udp_node2,TX_LENGTH,Node2_TxLength); |
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| 177 | warplab_writeRegister(udp_node2,TX_MODE,TxMode); |
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| 178 | warplab_setRadioParameter(udp_node2,CARRIER_CHANNEL,CarrierChannel); |
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| 179 | |
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| 180 | %-------------------------------------------------------------------------% |
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| 181 | % USER CODE HERE |
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| 182 | |
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| 183 | % Download 'Node2_Radio2_TxGain_RF' and 'Node2_Radio2_TxGain_BB' parameters |
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| 184 | % to node 2 using the 'warplab_setRadioParameter' function. |
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| 185 | |
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| 186 | % Hints: |
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| 187 | |
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| 188 | % 1. The first argument of the 'warplab_setRadioParameter' function |
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| 189 | % identifies the node to which the parameter will be downloaded to. |
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| 190 | % The id or handle to node 2 is 'udp_node2'. |
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| 191 | |
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| 192 | % 2. The second argument of the 'warplab_setRadioParameter' function |
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| 193 | % identifies the parameter that will be downloaded. The |
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| 194 | % 'Node2_Radio2_TxGain_RF' and 'Node2_Radio2_TxGain_BB' parameters are |
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| 195 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
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| 196 | % download these parameters is 'RADIO2_TXGAINS' |
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| 197 | |
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| 198 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
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| 199 | % value the parameter must be set to. The 'Node2_Radio2_TxGain_RF' and |
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| 200 | % 'Node2_Radio2_TxGain_BB' parameters are downloaded in one call of the |
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| 201 | % 'warplab_setRadioParameter', these two values must be combined for |
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| 202 | % download in the following way: |
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| 203 | % (Node2_Radio2_TxGain_RF + Node2_Radio2_TxGain_BB*2^16) |
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| 204 | |
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| 205 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
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| 206 | % exercises. |
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| 207 | |
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| 208 | %-------------------------------------------------------------------------% |
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| 209 | |
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| 210 | %-------------------------------------------------------------------------% |
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| 211 | % USER CODE HERE |
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| 212 | |
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| 213 | % Download 'Node2_Radio2_RxGain_BB' and 'Node2_Radio2_RxGain_RF' parameters |
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| 214 | % to node 2 using the 'warplab_setRadioParameter' function. |
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| 215 | |
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| 216 | % Hints: |
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| 217 | |
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| 218 | % 1. The first argument of the 'warplab_setRadioParameter' function |
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| 219 | % identifies the node to which the parameter will be downloaded to. |
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| 220 | % The id or handle to node 2 is 'udp_node2'. |
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| 221 | |
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| 222 | % 2. The second argument of the 'warplab_setRadioParameter' function |
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| 223 | % identifies the parameter that will be downloaded. The |
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| 224 | % 'Node2_Radio2_RxGain_BB' and 'Node2_Radio2_RxGain_RF' parameters are |
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| 225 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
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| 226 | % download these parameters is 'RADIO2_RXGAINS' |
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| 227 | |
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| 228 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
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| 229 | % value the parameter must be set to. The 'Node2_Radio2_RxGain_BB' and |
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| 230 | % 'Node2_Radio2_RxGain_RF' parameters are downloaded in one call of the |
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| 231 | % 'warplab_setRadioParameter', these two values must be combined for |
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| 232 | % download in the following way: |
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| 233 | % (Node2_Radio2_RxGain_BB + Node2_Radio2_RxGain_RF*2^16) |
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| 234 | |
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| 235 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
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| 236 | % exercises. |
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| 237 | |
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| 238 | %-------------------------------------------------------------------------% |
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| 239 | |
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| 240 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 241 | % 1. Generate the vector of samples that node 1 will transmit to node 2 and |
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| 242 | % the vector of samples that node 2 will transmit to node 1, then download |
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| 243 | % the samples to the WARP boards (Sample Frequency is 40MHz) |
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| 244 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 245 | % Create time vector. |
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| 246 | t1 = 0:(1/40e6):Node1_TxLength/40e6 - 1/40e6; |
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| 247 | |
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| 248 | % Create a signal to transmit from node 1, the signal can be real or complex. |
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| 249 | % The signal must meet the following requirements: |
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| 250 | % - Signal to transmit must be a row vector. |
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| 251 | % - The amplitude of the real part must be in [-1:1] and the amplitude |
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| 252 | % of the imaginary part must be in [-1:1]. |
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| 253 | % - Highest frequency component is limited to 9.5 MHz (signal bandwidth |
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| 254 | % is limited to 19 MHz) |
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| 255 | % - Lowest frequency component is limited to 30 kHz |
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| 256 | Node1_Radio2_TxData = exp(t1*j*2*pi*1e6); |
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| 257 | |
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| 258 | %-------------------------------------------------------------------------% |
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| 259 | % USER CODE HERE |
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| 260 | % Download the 'Node1_Radio2_TxData' vector to WARP node 1 using the |
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| 261 | % 'warplab_writeSMWO' function. The 'Node1_Radio2_TxData' vector is the |
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| 262 | % vector of samples to be transmitted from node 1 to node 2. The |
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| 263 | % 'warplab_writeSMWO' function has been used in previous exercises. |
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| 264 | |
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| 265 | %-------------------------------------------------------------------------% |
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| 266 | |
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| 267 | % Create time vector. |
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| 268 | t2 = 0:(1/40e6):Node2_TxLength/40e6 - 1/40e6; |
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| 269 | |
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| 270 | % Create a signal to transmit from node 2, the signal can be real or complex. |
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| 271 | % The signal must meet the following requirements: |
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| 272 | % - Signal to transmit must be a row vector. |
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| 273 | % - The amplitude of the real part must be in [-1:1] and the amplitude |
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| 274 | % of the imaginary part must be in [-1:1]. |
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| 275 | % - Signal bandwidth must be less than 19 MHz (Highest frequency component |
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| 276 | % is limited to 9.5 MHz due to radio settings) |
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| 277 | Node2_Radio2_TxData = linspace(0,1,Node2_TxLength).*exp(t2*j*2*pi*5e6); |
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| 278 | |
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| 279 | %-------------------------------------------------------------------------% |
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| 280 | % USER CODE HERE |
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| 281 | % Download the 'Node2_Radio2_TxData' vector to WARP node 2 using the |
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| 282 | % 'warplab_writeSMWO' function. The 'Node2_Radio2_TxData' vector is the |
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| 283 | % vector of samples to be transmitted from node 2 to node 1. The |
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| 284 | % 'warplab_writeSMWO' function has been used in previous exercises. |
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| 285 | |
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| 286 | %-------------------------------------------------------------------------% |
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| 287 | |
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| 288 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 289 | % 2. Prepare WARP boards for transmission and reception from node 1 to node 2 |
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| 290 | % and send trigger to start transmission and reception (trigger is the SYNC |
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| 291 | % packet) |
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| 292 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 293 | % The following lines of code set node 1 as transmitter and node 2 as |
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| 294 | % receiver; transmission and capture are triggered by sending the SYNC |
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| 295 | % packet. |
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| 296 | |
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| 297 | %-------------------------------------------------------------------------% |
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| 298 | % USER CODE HERE |
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| 299 | % Enable transmitter radio path in radio 2 in node 1 (enable radio 2 in |
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| 300 | % node 1 as transmitter) by sending the RADIO2_TXEN command to node 1 using |
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| 301 | % the 'warplab_sendCmd' function. The 'warplab_sendCmd' function has been |
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| 302 | % used in previous exercises. |
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| 303 | |
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| 304 | %-------------------------------------------------------------------------% |
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| 305 | |
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| 306 | %-------------------------------------------------------------------------% |
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| 307 | % USER CODE HERE |
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| 308 | % Enable transmission of node1's radio 2 Tx buffer (enable transmission |
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| 309 | % of samples stored in radio 2 Tx Buffer in node 1) by sending the |
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| 310 | % RADIO2TXBUFF_TXEN command to node 1 using the 'warplab_sendCmd' function. |
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| 311 | |
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| 312 | %-------------------------------------------------------------------------% |
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| 313 | |
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| 314 | %-------------------------------------------------------------------------% |
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| 315 | % USER CODE HERE |
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| 316 | % Enable receiver radio path in radio 2 in node 2 (enable radio 2 in |
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| 317 | % node 2 as receiver) by sending the RADIO2_RXEN command to node 2 using |
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| 318 | % the 'warplab_sendCmd' function. |
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| 319 | % The 'warplab_sendCmd' function has been used in previous exercises. |
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| 320 | |
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| 321 | %-------------------------------------------------------------------------% |
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| 322 | |
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| 323 | %-------------------------------------------------------------------------% |
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| 324 | % USER CODE HERE |
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| 325 | |
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| 326 | % Enable capture in node2's radio 2 Rx Buffer (enable radio 2 rx buffer in |
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| 327 | % node 2 for storage of samples) by sending the RADIO2RXBUFF_RXEN command to |
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| 328 | % node 2 using the 'warplab_sendCmd' function. |
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| 329 | % The 'warplab_sendCmd' function has been used in previous exercises. |
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| 330 | |
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| 331 | %-------------------------------------------------------------------------% |
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| 332 | |
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| 333 | % Prime transmitter state machine in node 1. Node 1 will be |
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| 334 | % waiting for the SYNC packet. Transmission from node 1 will be triggered |
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| 335 | % when node 1 receives the SYNC packet. |
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| 336 | warplab_sendCmd(udp_node1, TX_START, packetNum); |
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| 337 | |
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| 338 | % Prime receiver state machine in node 2. Node 2 will be waiting |
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| 339 | % for the SYNC packet. Capture at node 2 will be triggered when node 2 |
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| 340 | % receives the SYNC packet. |
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| 341 | warplab_sendCmd(udp_node2, RX_START, packetNum); |
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| 342 | |
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| 343 | % Send the SYNC packet |
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| 344 | warplab_sendSync(udp_Sync); |
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| 345 | |
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| 346 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 347 | % 3. Disable the radios |
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| 348 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 349 | % Disable the transmitter |
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| 350 | warplab_sendCmd(udp_node1, RADIO2_TXDIS, packetNum); |
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| 351 | |
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| 352 | % Disable the receiver |
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| 353 | warplab_sendCmd(udp_node2, RADIO2_RXDIS, packetNum); |
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| 354 | |
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| 355 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 356 | % 4. Prepare boards for transmission and reception from node 2 to node 1 |
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| 357 | % and send trigger to start transmission and reception (trigger is the SYNC |
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| 358 | % packet) |
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| 359 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 360 | % The following lines of code set node 2 as transmitter and node 1 as |
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| 361 | % receiver; transmission and capture are triggered by sending the SYNC |
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| 362 | % packet. |
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| 363 | |
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| 364 | %-------------------------------------------------------------------------% |
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| 365 | % USER CODE HERE |
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| 366 | % Enable transmitter radio path in radio 2 in node 2 (enable radio 2 in |
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| 367 | % node 2 as transmitter) by sending the RADIO2_TXEN command to node 2 using |
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| 368 | % the 'warplab_sendCmd' function. The 'warplab_sendCmd' function has been |
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| 369 | % used in previous exercises. |
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| 370 | |
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| 371 | %-------------------------------------------------------------------------% |
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| 372 | |
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| 373 | %-------------------------------------------------------------------------% |
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| 374 | % USER CODE HERE |
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| 375 | % Enable transmission of node2's radio 2 Tx buffer (enable transmission |
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| 376 | % of samples stored in radio 2 Tx Buffer in node 2) by sending the |
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| 377 | % RADIO2TXBUFF_TXEN command to node 2 using the 'warplab_sendCmd' function. |
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| 378 | % The 'warplab_sendCmd' function has been used in previous exercises. |
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| 379 | |
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| 380 | %-------------------------------------------------------------------------% |
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| 381 | |
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| 382 | %-------------------------------------------------------------------------% |
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| 383 | % USER CODE HERE |
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| 384 | % Enable receiver radio path in radio 2 in node 1 (enable radio 2 in |
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| 385 | % node 1 as receiver) by sending the RADIO2_RXEN command to node 1 using |
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| 386 | % the 'warplab_sendCmd' function. |
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| 387 | % The 'warplab_sendCmd' function has been used in previous exercises. |
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| 388 | |
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| 389 | %-------------------------------------------------------------------------% |
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| 390 | |
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| 391 | %-------------------------------------------------------------------------% |
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| 392 | % USER CODE HERE |
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| 393 | |
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| 394 | % Enable capture in node1's radio 2 Rx Buffer (enable radio 2 rx buffer in |
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| 395 | % node 1 for storage of samples) by sending the RADIO2RXBUFF_RXEN command to |
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| 396 | % node 1 using the 'warplab_sendCmd' function. |
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| 397 | % The 'warplab_sendCmd' function has been used in previous exercises. |
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| 398 | |
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| 399 | %-------------------------------------------------------------------------% |
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| 400 | |
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| 401 | % Prime transmitter state machine in node 2. Node 2 will be |
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| 402 | % waiting for the SYNC packet. Transmission from node 2 will be triggered |
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| 403 | % when node 2 receives the SYNC packet. |
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| 404 | warplab_sendCmd(udp_node2, TX_START, packetNum); |
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| 405 | |
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| 406 | % Prime receiver state machine in node 1. Node 1 will be waiting |
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| 407 | % for the SYNC packet. Capture at node 1 will be triggered when node 1 |
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| 408 | % receives the SYNC packet. |
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| 409 | warplab_sendCmd(udp_node1, RX_START, packetNum); |
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| 410 | |
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| 411 | % Send the SYNC packet |
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| 412 | warplab_sendSync(udp_Sync); |
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| 413 | |
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| 414 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 415 | % 5. Disable the radios |
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| 416 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 417 | % Disable the receiver |
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| 418 | warplab_sendCmd(udp_node1, RADIO2_RXDIS, packetNum); |
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| 419 | |
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| 420 | % Disable the transmitter |
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| 421 | warplab_sendCmd(udp_node2, RADIO2_TXDIS, packetNum); |
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| 422 | |
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| 423 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 424 | % 6. Read the received samples from the WARP boards |
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| 425 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 426 | % Read back the received samples sent from node 1 to node 2 |
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| 427 | [Node2_Radio2_RawRxData] = warplab_readSMRO(udp_node2, RADIO2_RXDATA, Node1_TxLength+Node1_TxDelay); |
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| 428 | % Process the received samples to obtain meaningful data |
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| 429 | [Node2_Radio2_RxData,Node2_Radio2_RxOTR] = warplab_processRawRxData(Node2_Radio2_RawRxData); |
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| 430 | |
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| 431 | % Read back the received samples sent from node 2 to node 1 |
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| 432 | [Node1_Radio2_RawRxData] = warplab_readSMRO(udp_node1, RADIO2_RXDATA, Node2_TxLength+Node2_TxDelay); |
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| 433 | % Process the received samples to obtain meaningful data |
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| 434 | [Node1_Radio2_RxData,Node1_Radio2_RxOTR] = warplab_processRawRxData(Node1_Radio2_RawRxData); |
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| 435 | |
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| 436 | |
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| 437 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 438 | % 7. Reset the boards and close sockets |
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| 439 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 440 | % Set radio 2 Tx buffer in node 1 back to Tx disabled mode |
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| 441 | warplab_sendCmd(udp_node1, RADIO2TXBUFF_TXDIS, packetNum); |
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| 442 | |
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| 443 | % Set radio 2 Tx buffer in node 2 back to Tx disabled mode |
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| 444 | warplab_sendCmd(udp_node2, RADIO2TXBUFF_TXDIS, packetNum); |
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| 445 | |
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| 446 | % Set radio 2 Rx buffer in node 1 back to Rx disabled mode |
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| 447 | warplab_sendCmd(udp_node1, RADIO2RXBUFF_RXDIS, packetNum); |
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| 448 | |
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| 449 | % Set radio 2 Rx buffer in node 2 back to Rx disabled mode |
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| 450 | warplab_sendCmd(udp_node2, RADIO2RXBUFF_RXDIS, packetNum); |
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| 451 | |
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| 452 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 453 | % 5. Plot the transmitted and received data and close sockets |
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| 454 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 455 | % Plot data corresponding to node 1 to node 2 transmission |
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| 456 | figure; |
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| 457 | subplot(2,2,1); |
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| 458 | plot(real(Node1_Radio2_TxData)); |
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| 459 | title('Tx Node 1 Radio 2 I'); |
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| 460 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 461 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 462 | subplot(2,2,2); |
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| 463 | plot(imag(Node1_Radio2_TxData)); |
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| 464 | title('Tx Node 1 Radio 2 Q'); |
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| 465 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 466 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 467 | subplot(2,2,3); |
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| 468 | plot(real(Node2_Radio2_RxData)); |
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| 469 | title('Rx Node 2 Radio 2 I'); |
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| 470 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 471 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 472 | subplot(2,2,4); |
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| 473 | plot(imag(Node2_Radio2_RxData)); |
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| 474 | title('Rx Node 2 Radio 2 Q'); |
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| 475 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 476 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 477 | |
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| 478 | % Plot data from B to A transmission |
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| 479 | figure; |
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| 480 | subplot(2,2,1); |
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| 481 | plot(real(Node2_Radio2_TxData)); |
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| 482 | title('Tx Node 2 Radio 2 I'); |
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| 483 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 484 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 485 | subplot(2,2,2); |
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| 486 | plot(imag(Node2_Radio2_TxData)); |
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| 487 | title('Tx Node 2 Radio 2 Q'); |
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| 488 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 489 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 490 | subplot(2,2,3); |
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| 491 | plot(real(Node1_Radio2_RxData)); |
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| 492 | title('Rx Node 1 Radio 2 I'); |
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| 493 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 494 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 495 | subplot(2,2,4); |
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| 496 | plot(imag(Node1_Radio2_RxData)); |
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| 497 | title('Rx Node 1 Radio 2 Q'); |
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| 498 | xlabel('n (samples)'); ylabel('Amplitude'); |
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| 499 | axis([0 2^14 -1 1]); % Set axis ranges. |
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| 500 | |
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| 501 | % Close sockets |
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| 502 | pnet('closeall'); |
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| 503 | |
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| 504 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 505 | % Code to avoid conflict between users, only needed for the workshop |
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| 506 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
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| 507 | % !del c:\boards_lock.txt |
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| 508 | catch, |
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| 509 | % Reset nodes |
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| 510 | warplab_reset2x2Node(udp_node1); |
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| 511 | warplab_reset2x2Node(udp_node2); |
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| 512 | % Close sockets |
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| 513 | pnet('closeall'); |
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| 514 | % !del c:\boards_lock.txt |
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| 515 | lasterr |
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| 516 | end |
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