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#1 2018-Jan-10 04:41:25

boyheyt
Member
Registered: 2017-Apr-05
Posts: 23

Antenna

Hello !
I have two question ! 
Ordinal of Antenna between 2 node have affect BER of mimo ?
case1:

antA             antB   
antB             antA

case2:

antA             antA   
antB             antB


How to change ordinal of antenna in WARPlab ?
Thanks !

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#2 2018-Jan-10 09:35:17

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: Antenna

The WARP v3 board has two RF interfaces labeled RF A and RF B. You can assign whatever Tx/Rx signals you want to each RF interface. For example, in the WARPLab MIMO OFDM Example constructs two complex waveforms tx_vec_air_A and tx_vec_air_B, then assigns these to RF interfaces A and B. You can swap which waveform is assigned to which antenna by changing these variables.

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#3 2018-Jan-10 22:19:46

boyheyt
Member
Registered: 2017-Apr-05
Posts: 23

Re: Antenna

Thanks you !

I have more question.

When Signal DONE (Reset RX) in ofdm_txrx_supermimo_coded/OFDM Rx MIMO/Equalizer & Packetizer/Packet_Constructor/Data Buffer == 1  ?

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#4 2018-Jan-11 10:46:52

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: Antenna

I'm sorry, I don't understand what you're asking.

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#5 2018-Jan-12 06:26:38

boyheyt
Member
Registered: 2017-Apr-05
Posts: 23

Re: Antenna

Sorry ! 
When Signal DONE = 1 in Rx of ofdm_txrx_supermimo_coded ?
https://drive.google.com/file/d/1P8U-ruz4i8-HMtdHIYGDnXlmOM0UADcf/view?usp=sharing

In option of modulaton have BPSK,QPSK,16QAM,64QAM !  but when i selection 64 QAM in mimo reference . Rx don't detection true data.
When i connect Tx vs Rx

https://drive.google.com/file/d/1sRpcYZxcb4MNlaGycIMGieAoisJ_RMoI/view?usp=sharing
Thanks

Last edited by boyheyt (2018-Jan-12 06:27:23)

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#6 2018-Jan-12 14:38:23

murphpo
Administrator
From: Mango Communications
Registered: 2006-Jul-03
Posts: 5159

Re: Antenna

The DONE signal is asserted by the Viterbi decoder block when it has decoded the last byte of the packet payload. You should observe a DONE signal for any modulation/coding rate if the Rx PHY was able to decode the packet header and attempted to decode the packet payload.

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