Changes between Version 10 and Version 11 of Tutorials/Wireless/wideband

Timestamp:

Oct 21, 2019, 3:05:24 AM (5 years ago)

Author:

prasanthi

Comment:

—

Tutorials/Wireless/wideband

@@ -78 +78 @@
 |   |   |   * FIFO_1
 }}}
-  If you see the above at the end of uhd_usrp_probe output, the USRPs are ready.
+  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.
 * If not, load the required image using uhd_image_loader
 {{{
@@ -85 +85 @@
 
 ==== Set up web based streaming ====
-* Set up SSH tunnel from your local port 5100 to grid.orbit-lab.org:5100 
-{{{
-ssh -L 5100:grid.orbit-lab.org:5100 username@grid.orbit-lab.org
-}}}
 * Set up a web proxy for the receive node
 Use run-websock command to set up the proxy (this is required for remote web based streaming)
 {{{
-prasanthi@console.grid:~$ run-websock 5100 10.10.1.19:5100 --daemon
+prasanthi@console.grid:~$ run-websock 5100 10.10.20.1:5100 --daemon
 WARNING: no 'numpy' module, HyBi protocol will be slower
 WebSocket server settings:
@@ -100 +96 @@
   - Backgrounding (daemon)
 }}}
-
+* 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])
+{{{
+ssh -L 5100:grid.orbit-lab.org:5100 username@grid.orbit-lab.org
+}}}
 
 ==== Run the experiment
-* On TX
-* On RX
-* Download html and run
+* Start transmit application on the TX node. If you were assigned a group, the command below will start the application on the assigned TX USRP, with a bandwidth of 100MHz.
+{{{
+root@node19-1:~# /root/uhd/host/build/examples/rfnoc_tx_mobicom --group red
+}}}
+  The same application can be run by passing different command line parameters as shown below
+{{{
+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"
+}}}
 
-
-=== Run the experiment ===
-* Run rfnoc_spec_sense_display on the receive node. The command below starts the application to receive spectrum sensing samples from 4 USRP X310s at 100MSPS.
+* 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
 {{{
-root@node1-19:~/uhd/host/build/examples# ./rfnoc_spec_sense_display --args="addr0=10.10.23.11,addr1=10.10.23.12,addr2=10.10.23.13,addr3=10.10.23.14,skip_ddc,skip_duc" --freq 5e9 --gain 15 --ddc-args="input_rate=200000000.0,output_rate=100000000.0" --num-usrp 4 --spec-sense-args="avg_size=256"
+  root@node20-1:~# ./uhd/host/build/examples/rfnoc_rx_mobicom --group red
 }}}
-* Run rfnoc_spreader on the transmit node. The command below starts the application to send a 50MHz wide PN signal on node23-17.
+  or the following could be used, when not using a topology
 {{{
-root@node14-20:~/uhd/host/build/examples# ./rfnoc_spreader_dmafifo --args="addr=10.10.24.11,skip_ddc,skip_duc" --freq 2e9 --gain 15 --duc-args="input_rate=100000000.0,output_rate=200000000.0"
+  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"
 }}}
-* Download spec_sense_display.html and open it in your browser. Once you click the Start button, you should see power spectrum display as shown below.
+* 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.
 
     || [[Image(spec_sense_display.jpg)]]||