Changes between Version 14 and Version 15 of Tutorials/Wireless/wideband
- Timestamp:
- Oct 21, 2019, 6:13:03 PM (5 years ago)
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Tutorials/Wireless/wideband
v14 v15 67 67 }}} 68 68 If you see the above at the end of uhd_usrp_probe output, the USRPs are ready. Spreader_0 is used to spread the transmit signal, and Corrmag63avg8k_0 is the correlator on the receive side. 69 * If not, load the required image using uhd_image_loader70 {{{71 root@node19-1:~# uhd_image_loader --args="addr=10.10.23.16,type=x300" --fpga-path=""spreader_corr_specsense_uhd_3_14.bit"72 }}}73 69 74 70 ==== Set up web based streaming ==== 75 * Set up a web proxy for the receive node 76 Use run-websock command to set up the proxy (this is required for remote web based streaming) 71 * Web proxies to the receive node in each group are already set up. 72 73 * Set up SSH tunnel from your local port 5100 to grid.orbit-lab.org:510<group-number> (See [https://wiki.cosmos-lab.org/wiki/tutorials/ssh_tunnel]) 74 For example, for group-red set up tunnel to grid.orbit-lab.org:5101 77 75 {{{ 78 prasanthi@console.grid:~$ run-websock 5100 10.10.20.1:5100 --daemon 79 WARNING: no 'numpy' module, HyBi protocol will be slower 80 WebSocket server settings: 81 - Listen on :5100 82 - Flash security policy server 83 - No SSL/TLS support (no cert file) 84 - Backgrounding (daemon) 85 }}} 86 * Set up SSH tunnel from your local port 5100 to grid.orbit-lab.org:5100 (See [https://wiki.cosmos-lab.org/wiki/tutorials/ssh_tunnel]) 87 {{{ 88 ssh -L 5100:grid.orbit-lab.org:5100 username@grid.orbit-lab.org 76 ssh -L 5100:grid.orbit-lab.org:5101 username@grid.orbit-lab.org 89 77 }}} 90 78 … … 94 82 root@node19-1:~# /root/uhd/host/build/examples/rfnoc_tx_mobicom --group red 95 83 }}} 96 The same application can be run by passing different command line parameters as shown below 97 {{{ 98 root@node19-1:~# /root/uhd/host/build/examples/rfnoc_tx_mobicom --args"addr=10.10.23.16,type=x300,skip_ddc,skip_duc" --freq 3e9 --gain 20 --duc-args="input_rate=50000000.0,output_rate=200000000.0" 99 }}} 100 84 101 85 * Start receive application on the RX node. If you were assigned a group, the command below will start the application on the assigned RX USRP 102 86 {{{ 103 87 root@node20-1:~# ./uhd/host/build/examples/rfnoc_rx_mobicom --group red 104 88 }}} 105 or the following could be used, when not using a topology 106 {{{ 107 root@node20-1:~# ./uhd/host/build/examples/rfnoc_rx_mobicom --args"addr=10.10.24.16,type=x300,skip_ddc,skip_duc" --freq 3e9 --gain 10 --ddc-args="output_rate=50000000.0,input_rate=200000000.0" 108 }}} 89 109 90 * Download channel_sounding_display.html attached to this tutorial and open it in your browser. Once you click the start button, you should see PDP of the channel. 110 91