Changes between Version 22 and Version 23 of Tutorials/Wireless/MassiveMIMO

Timestamp:

Jul 8, 2022, 7:38:27 AM (3 years ago)

Author:

zhenzhou77

Comment:

—

Tutorials/Wireless/MassiveMIMO

@@ -117 +117 @@
 * Include in {{{iles/special_conf/usrp_16qam.json}}} the IP address {{{10.10.23.1}}} to {{{10.10.23.8}}} under {{{BaseStations}}} as the base station (BS); 
 
-* Similarly, set {{{30AD2E0}}} in {{{Clients}}} as the user
+* Similarly, set {{{30AD2E0}}} under {{{Clients}}} as the user
 
 
+=== Execution ===
+==== Run the experiment ====
+* In the USRP-B210 {{{node8-7}}} terminal [Terminal 1], start the client:
+{{{#!shell
+root@node8-7:~/RENEWLab/CC/Sounder# ./build/sounder --conf files/special_conf/usrp-16QAM.json --client_only
+...
+...
+pinning client thread 0 to core 1
+scheduling TX 13 Frames (41.08 ms) in the future!
+1 uplink symbols will be sent per frame...
+Beacon detected at Time 32476200, sync_index: 13100
+Start main client txrx loop...
+}}}
+
+* In the second terminal [Terminal 2], start the BS:
+{{{#!shell
+root@srv2-lg1:~/git/renew-software/CC/Sounder# ./sounder files/usrp-bs-only.json 
+...
+...
+Set HDF5 File to logs/trace-2020-9-21-18-46-29_1x2x2.hdf5 and group to /
+task thread 0 starts
+pinning thread 0 to core 1
+Recv Thread 0: waiting for release
+receiver thread 0 has 1 radios
+Sync BS host and FPGA timestamp...
+Start BS main recv loop... 
+Saving HDF5, 2000 frames saved.
+...
+...
+}}}
+
+==== Analyze the results ====
+* Once the hdf5 file is recorded (in this case, {{{logs/trace-2020-9-21-18-46-29_1x2x2.hdf5}}}), follow the **Analyze the HDF5 dataset** step [https://docs.renew-wireless.org/dev-suite/design-flows/cpp/sounder/ here] to analyze the results. For example, we can show the pilot sequence for computing the 2x2 channel matrix H = [h00, h01; h10, h11] as follows:
+{{{#!shell
+root@srv2-lg1:~/git/renew-software/PYTHON/IrisUtils# python3 plot_hdf5.py ../../CC/Sounder/logs/trace-2020-9-21-18-46-29_1x2x2.hdf5 --ref-ant 0 --ref-user 0 --ref-frame 1500
+}}}
+where {{{--ref-ant = 0, 1}}} represents the BS antenna index, and {{{--ref-user = 0, 1}}} represents the user index.
+
+|| [[Image(MIMOSounding_tutorial_h00.png, 600px)]] || [[Image(MIMOSounding_tutorial_h01.png, 600px)]] ||
+|| [[Image(MIMOSounding_tutorial_h10.png, 600px)]] || [[Image(MIMOSounding_tutorial_h11.png, 600px)]] || 
+
+