1 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
2 | % Transmitting and Receiving Data using WARPLab (2x2 MIMO configuration) |
---|
3 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
4 | % The specific steps implemented in this script are the following |
---|
5 | |
---|
6 | % 0. Initializaton and definition of parameters |
---|
7 | % 1. Generate a vector of samples to transmit and send the samples to the |
---|
8 | % WARP board (Sample Frequency is 40MHz) |
---|
9 | % 2. Prepare WARP boards for transmission and reception and send trigger to |
---|
10 | % start transmission and reception (trigger is the SYNC packet) |
---|
11 | % 3. Read the received samples from the Warp board |
---|
12 | % 4. Reset and disable the boards |
---|
13 | % 5. Plot the transmitted and received data and close sockets |
---|
14 | |
---|
15 | % In this lab exercise you will write a matlab script that implements the |
---|
16 | % six steps above. Part of the code is provided, some part of the code you |
---|
17 | % will write. Read the code below and fill in with your code wherever you |
---|
18 | % are asked to do so. |
---|
19 | |
---|
20 | % NOTE: To avoid conflict with other groups using the boards, please test |
---|
21 | % the code you write in this script in any of the following three ways: |
---|
22 | % |
---|
23 | % Option 1. Run this script from MATLAB's Command Window by entering the |
---|
24 | % name of the script (enter warplab_mimo_2x2_example_TxRx_WorkshopExercise |
---|
25 | % in matlab's Command Window). |
---|
26 | % Option 2. In the menu bar go to Debug and select Run. If there |
---|
27 | % are errors in the code, error messages will appear in the Command Window. |
---|
28 | % Option 3. Press F5. If the are errors in the code, error messages will |
---|
29 | % appear in the Command Window. |
---|
30 | % |
---|
31 | % DO NOT USE the Evaluate selection option and DO NOT run the script by |
---|
32 | % sections. To test any change, always run the whole script by following |
---|
33 | % any of the three options above. |
---|
34 | |
---|
35 | try, |
---|
36 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
37 | % Code to avoid conflict between users, only needed for the workshop, go to |
---|
38 | % step 0 below to start the initialization and definition of parameters |
---|
39 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
40 | % fid = fopen('c:\boards_lock.txt'); |
---|
41 | % |
---|
42 | % if(fid > -1) |
---|
43 | % fclose('all'); |
---|
44 | % errordlg('Boards already in use - Please try again!'); |
---|
45 | % return; |
---|
46 | % end |
---|
47 | % |
---|
48 | % !echo > c:\boards_lock.txt |
---|
49 | |
---|
50 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
51 | % 0. Initializaton and definition of parameters |
---|
52 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
53 | %Load some global definitions (packet types, etc.) |
---|
54 | warplab_defines |
---|
55 | |
---|
56 | % Create Socket handles and intialize nodes |
---|
57 | [socketHandles, packetNum] = warplab_initialize; |
---|
58 | |
---|
59 | % Separate the socket handles for easier access |
---|
60 | % The first socket handle is always the magic SYNC |
---|
61 | % The rest of the handles are the handles to the WARP nodes |
---|
62 | udp_Sync = socketHandles(1); |
---|
63 | udp_node1 = socketHandles(2); |
---|
64 | udp_node2 = socketHandles(3); |
---|
65 | |
---|
66 | % Define WARPLab parameters. |
---|
67 | %-------------------------------------------------------------------------% |
---|
68 | % USER CODE HERE |
---|
69 | |
---|
70 | % Create the following variables and assign them valid values: |
---|
71 | |
---|
72 | % TxDelay: Number of noise samples per Rx capture. In [0:2^14] |
---|
73 | % TxLength: Length of transmission. In [0:2^14-1-TxDelay] |
---|
74 | % TxMode: Transmission mode. In [0:1] |
---|
75 | % 0: Single Transmission |
---|
76 | % 1: Continuous Transmission. Tx board will continue |
---|
77 | % transmitting the vector of samples until the user manually |
---|
78 | % disables the transmitter. |
---|
79 | % For this exercise set TxMode = 0; |
---|
80 | % CarrierChannel: Channel in the 2.4 GHz band. In [1:14] |
---|
81 | % Node1_Radio2_TxGain_BB: Tx Baseband Gain. In [0:3] |
---|
82 | % Node1_Radio2_TxGain_RF: Tx RF Gain. In [0:63] |
---|
83 | % Node1_Radio3_TxGain_BB: Tx Baseband Gain. In [0:3] |
---|
84 | % Node1_Radio3_TxGain_RF: Tx RF Gain. In [0:63] |
---|
85 | % Node2_Radio2_RxGain_BB: Rx Baseband Gain. In [0:31] |
---|
86 | % Node2_Radio2_RxGain_RF: Rx RF Gain. In [1:3] |
---|
87 | % Node2_Radio3_RxGain_BB: Rx Baseband Gain. In [0:31] |
---|
88 | % Node2_Radio3_RxGain_RF: Rx RF Gain. In [1:3] |
---|
89 | % % Note: For this experiment node 1 will be set as the transmitter and node |
---|
90 | % 2 will be set as the receiver (this is done later in the code), hence, |
---|
91 | % there is no need to define receive gains for node1 and there is no |
---|
92 | % need to define transmitter gains for node2. |
---|
93 | |
---|
94 | %-------------------------------------------------------------------------% |
---|
95 | |
---|
96 | % Download the WARPLab parameters to the WARP nodes. |
---|
97 | % The nodes store the TxDelay, TxLength, and TxMode parameters in |
---|
98 | % registers defined in the WARPLab sysgen model. The nodes set radio |
---|
99 | % related parameters CarrierChannel, TxGains, and RxGains, using the |
---|
100 | % radio controller functions. |
---|
101 | |
---|
102 | % The TxDelay, TxLength, and TxMode parameters need to be known at the transmitter; |
---|
103 | % the receiver doesn't require knowledge of these parameters (the receiver |
---|
104 | % will always capture 2^14 samples). For this exercise node 1 will be set as |
---|
105 | % the transmitter (this is done later in the code). Since TxDelay, TxLength and |
---|
106 | % TxMode are only required at the transmitter we download the TxDelay, TxLength and |
---|
107 | % TxMode parameters only to the transmitter node (node 1). |
---|
108 | warplab_writeRegister(udp_node1,TX_DELAY,TxDelay); |
---|
109 | warplab_writeRegister(udp_node1,TX_LENGTH,TxLength); |
---|
110 | warplab_writeRegister(udp_node1,TX_MODE,TxMode); |
---|
111 | % The CarrierChannel parameter must be downloaded to all nodes |
---|
112 | warplab_setRadioParameter(udp_node1,CARRIER_CHANNEL,CarrierChannel); |
---|
113 | warplab_setRadioParameter(udp_node2,CARRIER_CHANNEL,CarrierChannel); |
---|
114 | |
---|
115 | %-------------------------------------------------------------------------% |
---|
116 | % USER CODE HERE |
---|
117 | |
---|
118 | % Download 'Node1_Radio2_TxGain_RF', 'Node1_Radio2_TxGain_BB', |
---|
119 | % 'Node1_Radio3_TxGain_RF', and 'Node1_Radio3_TxGain_BB' parameters |
---|
120 | % to node 1 using the 'warplab_setRadioParameter' function. |
---|
121 | |
---|
122 | % Hints: |
---|
123 | |
---|
124 | % 1. The first argument of the 'warplab_setRadioParameter' function |
---|
125 | % identifies the node to which the parameter will be downloaded to. |
---|
126 | % The id or handle to node 1 is 'udp_node1'. |
---|
127 | |
---|
128 | % 2. The second argument of the 'warplab_setRadioParameter' function |
---|
129 | % identifies the parameter that will be downloaded. The |
---|
130 | % 'Node1_Radio2_TxGain_RF' and 'Node1_Radio2_TxGain_BB' parameters are |
---|
131 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
---|
132 | % download these parameters is 'RADIO2_TXGAINS'. The |
---|
133 | % 'Node1_Radio3_TxGain_RF' and 'Node1_Radio3_TxGain_BB' parameters are |
---|
134 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
---|
135 | % download these parameters is 'RADIO3_TXGAINS'. |
---|
136 | |
---|
137 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
---|
138 | % value the parameter must be set to. The 'Node1_Radio2_TxGain_RF' and |
---|
139 | % 'Node1_Radio2_TxGain_BB' parameters are downloaded in one call of the |
---|
140 | % 'warplab_setRadioParameter', these two values must be combined for |
---|
141 | % download in the following way: |
---|
142 | % (Node1_Radio2_TxGain_RF + Node1_Radio2_TxGain_BB*2^16) |
---|
143 | % The 'Node1_Radio3_TxGain_RF' and |
---|
144 | % 'Node1_Radio3_TxGain_BB' parameters are downloaded in one call of the |
---|
145 | % 'warplab_setRadioParameter', these two values must be combined for |
---|
146 | % download in the following way: |
---|
147 | % (Node1_Radio3_TxGain_RF + Node1_Radio3_TxGain_BB*2^16) |
---|
148 | |
---|
149 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
---|
150 | % exercises. |
---|
151 | |
---|
152 | % 5. Call the 'warplab_setRadioParameter' function twice. One time to |
---|
153 | % download the 'Node1_Radio2_TxGain_RF' and 'Node1_Radio2_TxGain_BB' |
---|
154 | % parameters and one time to download the 'Node1_Radio3_TxGain_RF' and |
---|
155 | % 'Node1_Radio3_TxGain_BB' parameters. |
---|
156 | |
---|
157 | %-------------------------------------------------------------------------% |
---|
158 | |
---|
159 | %-------------------------------------------------------------------------% |
---|
160 | % USER CODE HERE |
---|
161 | |
---|
162 | % Download 'Node2_Radio2_RxGain_BB', 'Node2_Radio2_RxGain_RF', |
---|
163 | % 'Node2_Radio3_RxGain_BB', and 'Node2_Radio3_RxGain_RF' parameters |
---|
164 | % to node 2 using the 'warplab_setRadioParameter' function. |
---|
165 | |
---|
166 | % Hints: |
---|
167 | |
---|
168 | % 1. The first argument of the 'warplab_setRadioParameter' function |
---|
169 | % identifies the node to which the parameter will be downloaded to. |
---|
170 | % The id or handle to node 2 is 'udp_node2'. |
---|
171 | |
---|
172 | % 2. The second argument of the 'warplab_setRadioParameter' function |
---|
173 | % identifies the parameter that will be downloaded. The |
---|
174 | % 'Node2_Radio2_RxGain_BB' and 'Node2_Radio2_RxGain_RF' parameters are |
---|
175 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
---|
176 | % download these parameters is 'RADIO2_RXGAINS'. The |
---|
177 | % 'Node2_Radio3_RxGain_BB' and 'Node2_Radio3_RxGain_RF' parameters are |
---|
178 | % downloaded in one call of the 'warplab_setRadioParameter' and the id to |
---|
179 | % download these parameters is 'RADIO3_RXGAINS' |
---|
180 | |
---|
181 | % 3. The third argument of the 'warplab_setRadioParameter' function is the |
---|
182 | % value the parameter must be set to. The 'Node2_Radio2_RxGain_BB' and |
---|
183 | % 'Node2_Radio2_RxGain_RF' parameters are downloaded in one call of the |
---|
184 | % 'warplab_setRadioParameter', these two values must be combined for |
---|
185 | % download in the following way: |
---|
186 | % (Node2_Radio2_RxGain_BB + Node2_Radio2_RxGain_RF*2^16) |
---|
187 | % The 'Node2_Radio3_RxGain_BB' and |
---|
188 | % 'Node2_Radio3_RxGain_RF' parameters are downloaded in one call of the |
---|
189 | % 'warplab_setRadioParameter', these two values must be combined for |
---|
190 | % download in the following way: |
---|
191 | % (Node2_Radio3_RxGain_BB + Node2_Radio3_RxGain_RF*2^16) |
---|
192 | |
---|
193 | % 4. The 'warplab_setRadioParameter' function has been used in previous |
---|
194 | % exercises. |
---|
195 | |
---|
196 | % 5. Call the 'warplab_setRadioParameter' function twice. One time to |
---|
197 | % download the 'Node2_Radio2_RxGain_BB' and 'Node2_Radio2_RxGain_RF' |
---|
198 | % parameters and one time to download the 'Node2_Radio3_RxGain_BB' and |
---|
199 | % 'Node2_Radio3_RxGain_RF' parameters. |
---|
200 | |
---|
201 | %-------------------------------------------------------------------------% |
---|
202 | |
---|
203 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
204 | % 1. Generate a vector of samples to transmit and send the samples to the |
---|
205 | % WARP board (Sample Frequency is 40MHz) |
---|
206 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
207 | % Prepare some data to be transmitted |
---|
208 | t = 0:(1/40e6):TxLength/40e6 - 1/40e6; % Create time vector |
---|
209 | |
---|
210 | % Create a signal to transmit from radio 2, the signal can be real or complex. |
---|
211 | % The signal must meet the following requirements: |
---|
212 | % - Signal to transmit must be a row vector. |
---|
213 | % - The amplitude of the real part must be in [-1:1] and the amplitude |
---|
214 | % of the imaginary part must be in [-1:1]. |
---|
215 | % - Highest frequency component is limited to 9.5 MHz (signal bandwidth |
---|
216 | % is limited to 19 MHz) |
---|
217 | % - Lowest frequency component is limited to 30 kHz |
---|
218 | Node1_Radio2_TxData = exp(t*j*2*pi*1e6); |
---|
219 | |
---|
220 | %-------------------------------------------------------------------------% |
---|
221 | % USER CODE HERE |
---|
222 | % Download the 'Node1_Radio2_TxData' vector to WARP node 1 radio 2 Tx |
---|
223 | % buffer using the 'warplab_writeSMWO' function. The 'Node1_Radio2_TxData' |
---|
224 | % vector is the vector of samples to be transmitted from node 1 radio 2. The |
---|
225 | % 'warplab_writeSMWO' function has been used in previous exercises. |
---|
226 | % The id for radio 2 Tx buffer is 'RADIO2_TXDATA'. |
---|
227 | |
---|
228 | %-------------------------------------------------------------------------% |
---|
229 | |
---|
230 | % Create a signal to transmit from radio 3, the signal can be real or complex. |
---|
231 | % The signal must meet the following requirements: |
---|
232 | % - Signal to transmit must be a row vector. |
---|
233 | % - The amplitude of the real part must be in [-1:1] and the amplitude |
---|
234 | % of the imaginary part must be in [-1:1]. |
---|
235 | % - Highest frequency component is limited to 9.5 MHz (signal bandwidth |
---|
236 | % is limited to 19 MHz) |
---|
237 | % - Lowest frequency component is limited to 30 kHz |
---|
238 | Node1_Radio3_TxData = exp(t*j*2*pi*5e6); |
---|
239 | |
---|
240 | %-------------------------------------------------------------------------% |
---|
241 | % USER CODE HERE |
---|
242 | % Download the 'Node1_Radio3_TxData' vector to WARP node 1 radio 3 Tx |
---|
243 | % buffer using the 'warplab_writeSMWO' function. The 'Node1_Radio3_TxData' |
---|
244 | % vector is the vector of samples to be transmitted from node 1 radio 3. The |
---|
245 | % 'warplab_writeSMWO' function has been used in previous exercises. |
---|
246 | % The id for radio 3 Tx buffer is 'RADIO3_TXDATA'. |
---|
247 | |
---|
248 | %-------------------------------------------------------------------------% |
---|
249 | |
---|
250 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
251 | % 2. Prepare WARP boards for transmission and reception and send trigger to |
---|
252 | % start transmission and reception (trigger is the SYNC packet) |
---|
253 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
254 | % The following lines of code set node 1 as transmitter and node 2 as |
---|
255 | % receiver; transmission and capture are triggered by sending the SYNC |
---|
256 | % packet. |
---|
257 | |
---|
258 | %-------------------------------------------------------------------------% |
---|
259 | % USER CODE HERE |
---|
260 | % Enable transmitter radio path in radios 2 and 3 in node 1 (enable radio 2 |
---|
261 | % and radio 3 in node 1 as transmitters) by sending the RADIO2_TXEN and |
---|
262 | % RADIO3_TXEN commands to node 1 using |
---|
263 | % the 'warplab_sendCmd' function. The 'warplab_sendCmd' function has been |
---|
264 | % used in previous exercises. |
---|
265 | % To send the RADIO2_TXEN and RADIO3_TXEN commands in one call of the |
---|
266 | % 'warplab_sendCmd' function the second argument of the 'warplab_sendCmd' |
---|
267 | % function can be a vector of the commands: [RADIO2_TXEN, RADIO3_TXEN] |
---|
268 | |
---|
269 | %-------------------------------------------------------------------------% |
---|
270 | |
---|
271 | %-------------------------------------------------------------------------% |
---|
272 | % USER CODE HERE |
---|
273 | % Enable transmission of node1's radio 2 and radio 3 Tx buffer (enable |
---|
274 | % transmission of samples stored in radio 2 Tx Buffer and in radio 3 Tx |
---|
275 | % Buffer in node 1) by sending the RADIO2TXBUFF_TXEN and |
---|
276 | % RADIO3TXBUFF_TXEN commands to node 1 using |
---|
277 | % the 'warplab_sendCmd' function. The 'warplab_sendCmd' function has been |
---|
278 | % used in previous exercises. To send the |
---|
279 | % RADIO2TXBUFF_TXEN and RADIO3TXBUFF_TXEN commands in one call of the |
---|
280 | % 'warplab_sendCmd' function the second argument of the 'warplab_sendCmd' |
---|
281 | % function can be a vector of |
---|
282 | % the commands: [RADIO2TXBUFF_TXEN, RADIO3TXBUFF_TXEN] |
---|
283 | |
---|
284 | %-------------------------------------------------------------------------% |
---|
285 | |
---|
286 | %-------------------------------------------------------------------------% |
---|
287 | % USER CODE HERE |
---|
288 | % Enable receiver radio path in radios 2 and 3 in node 2 (enable radios 2 |
---|
289 | % and 3 in node 2 as receivers) by sending the 'RADIO2_RXEN' and |
---|
290 | % 'RADIO3_RXEN' ommands to node 2 using 'warplab_sendCmd' function. |
---|
291 | % The 'warplab_sendCmd' function has been |
---|
292 | % used in previous exercises. To send the |
---|
293 | % RADIO2_RXEN and RADIO3_RXEN commands in one call of the |
---|
294 | % 'warplab_sendCmd' function the second argument of the 'warplab_sendCmd' |
---|
295 | % function can be a vector of |
---|
296 | % the commands: [RADIO2_RXEN, RADIO3_RXEN] |
---|
297 | |
---|
298 | %-------------------------------------------------------------------------% |
---|
299 | |
---|
300 | %-------------------------------------------------------------------------% |
---|
301 | % USER CODE HERE |
---|
302 | % Enable capture in node2's radio 2 and radio 3 Rx Buffer (enable radio 2 |
---|
303 | % Rx buffer and radio 3 Rx buffer in node 2 for storage of samples) by |
---|
304 | % sending the 'RADIO2RXBUFF_RXEN' and 'RADIO3RXBUFF_RXEN' commands to node 2 |
---|
305 | % using 'warplab_sendCmd' function. |
---|
306 | % The 'warplab_sendCmd' function has been |
---|
307 | % used in previous exercises. To send the |
---|
308 | % RADIO2RXBUFF_RXEN and RADIO3RXBUFF_RXEN commands in one call of the |
---|
309 | % 'warplab_sendCmd' function the second argument of the 'warplab_sendCmd' |
---|
310 | % function can be a vector of |
---|
311 | % the commands: [RADIO2RXBUFF_RXEN, RADIO3RXBUFF_RXEN] |
---|
312 | |
---|
313 | %-------------------------------------------------------------------------% |
---|
314 | |
---|
315 | %-------------------------------------------------------------------------% |
---|
316 | % USER CODE HERE |
---|
317 | |
---|
318 | % Prime transmitter state machine in node 1 by sending the TX_START command |
---|
319 | % to node 1 using the 'warplab_sendCmd' function. |
---|
320 | |
---|
321 | % Node 1 will start waiting for the SYNC packet as soon as it receives the |
---|
322 | % TX_START command. Transmission from node 1 will be triggered when node 1 |
---|
323 | % receives the SYNC packet. |
---|
324 | |
---|
325 | %-------------------------------------------------------------------------% |
---|
326 | |
---|
327 | %-------------------------------------------------------------------------% |
---|
328 | % USER CODE HERE |
---|
329 | |
---|
330 | % Prime receiver state machine in node 2 by sending the RX_START command |
---|
331 | % to node 2 using the 'warplab_sendCmd' function. |
---|
332 | |
---|
333 | % Node 2 will start waiting for the SYNC packet as soon as it receives the |
---|
334 | % RX_START command. Capture on node 2 will be triggered when node 2 |
---|
335 | % receives the SYNC packet. |
---|
336 | |
---|
337 | %-------------------------------------------------------------------------% |
---|
338 | |
---|
339 | % Send the SYNC packet |
---|
340 | warplab_sendSync(udp_Sync); |
---|
341 | |
---|
342 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
343 | % 3. Read the received samples from the Warp board |
---|
344 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
345 | %-------------------------------------------------------------------------% |
---|
346 | % USER CODE HERE |
---|
347 | |
---|
348 | % Read the received samples from the WARP node 2 radio 2 Rx buffer using the |
---|
349 | % 'warplab_readSMRO' function. Store the samples in a variable named |
---|
350 | % 'Node2_Radio2_RawRxData'. |
---|
351 | |
---|
352 | % The id for radio 2 Rx buffer is 'RADIO2_RXDATA'. |
---|
353 | |
---|
354 | % For this exercise the third argument of the 'warplab_readSMRO' |
---|
355 | % function must be equal to 'TxLength+TxDelay', since TxLength is the |
---|
356 | % number of samples that were transmitted and the first TxDelay samples |
---|
357 | % that were captured correspond to noise samples captured before the data |
---|
358 | % was transmitted. |
---|
359 | |
---|
360 | %-------------------------------------------------------------------------% |
---|
361 | |
---|
362 | %-------------------------------------------------------------------------% |
---|
363 | % USER CODE HERE |
---|
364 | |
---|
365 | % Read the received samples from the WARP node 2 radio 3 Rx buffer using the |
---|
366 | % 'warplab_readSMRO' function. Store the samples in a variable named |
---|
367 | % 'Node2_Radio3_RawRxData'. |
---|
368 | |
---|
369 | % The id for radio 3 Rx buffer is 'RADIO3_RXDATA'. |
---|
370 | |
---|
371 | % For this exercise the third argument of the 'warplab_readSMRO' |
---|
372 | % function must be equal to 'TxLength+TxDelay', since TxLength is the |
---|
373 | % number of samples that were transmitted and the first TxDelay samples |
---|
374 | % that were captured correspond to noise samples captured before the data |
---|
375 | % was transmitted. |
---|
376 | |
---|
377 | %-------------------------------------------------------------------------% |
---|
378 | |
---|
379 | % Process the received samples to obtain meaningful data |
---|
380 | [Node2_Radio2_RxData,Node2_Radio2_RxOTR] = warplab_processRawRxData(Node2_Radio2_RawRxData); |
---|
381 | [Node2_Radio3_RxData,Node2_Radio3_RxOTR] = warplab_processRawRxData(Node2_Radio3_RawRxData); |
---|
382 | % Read stored RSSI data from radio 2 |
---|
383 | [Node2_Radio2_RawRSSIData] = warplab_readSMRO(udp_node2, RADIO2_RSSIDATA, ceil((TxLength+TxDelay)/8)); |
---|
384 | % Read stored RSSI data from radio 3 |
---|
385 | [Node2_Radio3_RawRSSIData] = warplab_readSMRO(udp_node2, RADIO3_RSSIDATA, ceil((TxLength+TxDelay)/8)); |
---|
386 | % Procecss Raw RSSI data to obtain meningful RSSI values |
---|
387 | [Node2_Radio2_RSSIData] = warplab_processRawRSSIData(Node2_Radio2_RawRSSIData); |
---|
388 | [Node2_Radio3_RSSIData] = warplab_processRawRSSIData(Node2_Radio3_RawRSSIData); |
---|
389 | % Note: If the four lines of code above (warplab_processRawRSSIData lines and |
---|
390 | % warplab_readSMRO(udp_node2, RADIO2_RSSIDATA, (TxLength+TxDelay)/8) line |
---|
391 | % and warplab_readSMRO(udp_node2, RADIO3_RSSIDATA, (TxLength+TxDelay)/8) line) |
---|
392 | % are deleted, then the code will work when the boards are programmed |
---|
393 | % with the warplab_mimo_4x4_v04.bit bitstream) |
---|
394 | |
---|
395 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
396 | % 4. Reset and disable the boards |
---|
397 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
398 | % Set radios 2 and 3 Tx buffer in node 1 back to Tx disabled mode |
---|
399 | warplab_sendCmd(udp_node1, [RADIO2TXBUFF_TXDIS RADIO3TXBUFF_TXDIS], packetNum); |
---|
400 | |
---|
401 | % Disable the transmitter radios |
---|
402 | warplab_sendCmd(udp_node1, [RADIO2_TXDIS, RADIO3_TXDIS], packetNum); |
---|
403 | |
---|
404 | % Set radios 2 and 3 Rx buffer in node 2 back to Rx disabled mode |
---|
405 | warplab_sendCmd(udp_node2, [RADIO2RXBUFF_RXDIS, RADIO3RXBUFF_RXDIS], packetNum); |
---|
406 | |
---|
407 | % Disable the receiver radios |
---|
408 | warplab_sendCmd(udp_node2, [RADIO2_RXDIS,RADIO3_RXDIS], packetNum); |
---|
409 | |
---|
410 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
411 | % 5. Plot the transmitted and received data and close sockets |
---|
412 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
413 | figure; |
---|
414 | subplot(4,2,1); |
---|
415 | plot(real(Node1_Radio2_TxData)); |
---|
416 | title('Tx Node 1 Radio 2 I'); |
---|
417 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
418 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
419 | subplot(4,2,2); |
---|
420 | plot(imag(Node1_Radio2_TxData)); |
---|
421 | title('Tx Node 1 Radio 2 Q'); |
---|
422 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
423 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
424 | subplot(4,2,3); |
---|
425 | plot(real(Node1_Radio3_TxData)); |
---|
426 | title('Tx Node 1 Radio 3 I'); |
---|
427 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
428 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
429 | subplot(4,2,4); |
---|
430 | plot(imag(Node1_Radio3_TxData)); |
---|
431 | title('Tx Node 1 Radio 3 Q'); |
---|
432 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
433 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
434 | subplot(4,2,5); |
---|
435 | plot(real(Node2_Radio2_RxData)); |
---|
436 | title('Rx Node 2 Radio 2 I'); |
---|
437 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
438 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
439 | subplot(4,2,6); |
---|
440 | plot(imag(Node2_Radio2_RxData)); |
---|
441 | title('Rx Node 2 Radio 2 Q'); |
---|
442 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
443 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
444 | subplot(4,2,7); |
---|
445 | plot(real(Node2_Radio3_RxData)); |
---|
446 | title('Rx Node 2 Radio 3 I'); |
---|
447 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
448 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
449 | subplot(4,2,8); |
---|
450 | plot(imag(Node2_Radio3_RxData)); |
---|
451 | title('Rx Node 2 Radio 3 Q'); |
---|
452 | xlabel('n (samples)'); ylabel('Amplitude'); |
---|
453 | axis([0 2^14 -1 1]); % Set axis ranges. |
---|
454 | |
---|
455 | % Close sockets |
---|
456 | pnet('closeall'); |
---|
457 | |
---|
458 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
459 | % Code to avoid conflict between users, only needed for the workshop |
---|
460 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
---|
461 | % !del c:\boards_lock.txt |
---|
462 | catch, |
---|
463 | % Reset nodes |
---|
464 | warplab_reset2x2Node(udp_node1); |
---|
465 | warplab_reset2x2Node(udp_node2); |
---|
466 | % Close sockets |
---|
467 | pnet('closeall'); |
---|
468 | % !del c:\boards_lock.txt |
---|
469 | lasterr |
---|
470 | end |
---|