Changes between Version 10 and Version 11 of Tutorials/Wireless/Channel Sounding Krypton


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Timestamp:
May 17, 2020, 11:01:14 PM (4 years ago)
Author:
prasanthi
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  • Tutorials/Wireless/Channel Sounding Krypton

    v10 v11  
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    9 This tutorial demonstrates how to use the RFNoC channel sounder design for obtaining the PDP of channels up to 100MHz wide. An FPGA correlator module computes real time correlation power, and an averaging module, averages contiguous sets of PDP over time, and sends the result to host CPU. This design is compatible with 3rd generation Ettus USRP devices. This tutorial uses USRP 2974s on [wiki:Architecture/Domains/cosmos_sb1 COSMOS SandBox1].
     9This tutorial demonstrates how to use the RFNoC channel sounder design for obtaining the PDP of channels up to 100MHz wide. On the transmit side, data samples are spread using a PN sequence. On the receive end, an FPGA correlator module computes real time correlation power, and an averaging module, averages contiguous sets of PDP over time. The results are continuously sent to the host CPU. This design is compatible with 3rd generation Ettus USRP devices and this tutorial uses USRP 2974s on [wiki:Architecture/Domains/cosmos_sb1 COSMOS SandBox1].
    1010
    1111=== Prerequisites ===
    … …  
    7979
    8080==== Run the experiment
    81 * Start transmit application on the TX node.
     81* Start transmit application on the TX node. It configures transmit RFNoC flowgraph, configures the Spreader module in the FPGA and transmits data samples.
    8282{{{#!shell-session
    8383root@sdr2-md1:~# /root/uhd/host/build/examples/rfnoc_tx_spreader --args="type=x300,skip_ddc,skip_duc" --freq 3e9 --gain 30 --duc-args="input_rate=50000000.0,output_rate=200000000.0"
    8484}}}
    8585
    86 * Start receive application on the RX node.
     86* Start receive application on the RX node. It configures receive RFNoC flowgraph, configures the correlator, averaging modules in the FPGA and starts a TCP server to talk to the web application.
    8787{{{#!shell-session
    8888root@sdr2-s1-lg1:~# uhd/host/build/examples/rfnoc_rx_channel_sounder --args="type=x300,skip_ddc,skip_duc" --freq 3e9 --gain 10 --ddc-args="output_rate=50000000.0,input_rate=200000000.0"