Changes between Version 4 and Version 5 of Tutorials/Wireless/GNURadioCFOEstimation


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Timestamp:
Feb 9, 2024, 5:37:44 PM (10 months ago)
Author:
prasanthi
Comment:

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  • Tutorials/Wireless/GNURadioCFOEstimation

    v4 v5  
    185185
    186186* Please make sure the USRP sink (TX) in TX_OFDM.grc is configured with sdr1-in1 ("addr=10.39.6.1"). Set the carrier frequency to 3GHz (3e9) and the subdev to be "B:0" (RF3). In this flowgraph, the sampling rate is set to 62.5 MSPS and the number of OFDM subcarriers set to 64. So the maximum CFO that can be detected is 62.5/(2*64) = 0.488 MHz.
    187 || [[Image(usrp_sink_tx_ofdm.PNG, 600px)]] ||
     187|| [[Image(usrp_sink_tx_ofdm.PNG, 400px)]] ||
    188188
    189189* Receive the OFDM waveform on sdr1-in2+rfdev4-in2 by running the flowgraph RX_OFDM_CFO_estimation.grc on srv2-lg1. Launch gnuradio-companion on srv1-lg1
    … …  
    194194
    195195* Please make sure the USRP source (RX) in RX_OFDM_CFO_estimation.grc is configured with sdr1-in2("addr=10.39.6.2"). Set the carrier frequency to 3GHz (3e9) and the subdev to be "B:0" (RF3).
    196 || [[Image(usrp_source_rx_ofdm.PNG, 600px)]] ||
     196|| [[Image(usrp_source_rx_ofdm.PNG, 400px)]] ||
    197197
    198198* Start both the flowgraphs to see receive IQ samples and per packet estimated CFO value at the receiver.