Changes between Version 19 and Version 20 of Tutorials/Wireless/mmwaveRFSoC

Timestamp:

Feb 1, 2022, 11:05:20 PM (3 years ago)

Author:

skrimpon

Comment:

—

Tutorials/Wireless/mmwaveRFSoC

@@ -137 +137 @@
 root@srv1-in1:~/mmwsdr/host/demos/basic$ python video.py --node srv1-in1
 }}}
-- '''onenode.py:''' In this script we demonstrate the control of the SDR data interface. The script creates one SDR object that controls the ZCU111 and Siver IMA.
-
-
-In this demo we control a single SDR. The script creates an SDR object that controls the Xilinx RFSoC FPGA eval board and Sivers IMA. A user can provide arguments to the script, such as the carrier frequency, the COSMOS node id and the transceiver mode. The script by default starts a local connection at srv1-in1 with a carrier frequency at 60.48 GHz in receive mode.
-{{{#!shell-session
-root@srv1-in1:~/mmwsdr/host/demos/basic$ python onenode.py --freq 60.48e9 --node srv1-in1 --mode rx
-}}}
+- '''onenode.py:''' In this demo we control a single SDR node. We create an SDR object and an XY-Table object using the `mmwsdr` library. The SDR object configures and controls a Xilinx RFSoC ZCU111 eval board and a Sivers IMA transceiver board. A user can provide arguments to the script, such as the carrier frequency, the COSMOS node id and the transceiver mode. The script by default starts a local connection with a carrier frequency at 60.48 GHz in receive mode.
+ 1. Start the transmitter in `srv1-in1`:
+{{{#!shell-session
+root@srv1-in1:~/mmwsdr/host/demos/basic$ python onenode.py --freq 60.48e9 --node srv1-in1 --mode tx
+}}}
+ 2. Start the receive in `srv1-in2`:
+{{{#!shell-session
+root@srv1-in2:~/mmwsdr/host/demos/basic$ python onenode.py --freq 60.48e9 --node srv1-in2 --mode rx
+}}}
+ 3. Observe the received signal in frequency-domain:
+
 - '''ederarray.py:''' This script contains SDR object to control the Sivers array.
 
@@ -157 +161 @@
 }}}
 
-- '''twonode.py:''' 
+- '''twonode.py:''' In this demo we control two single SDR node. We create and SDR object and an XY-Table object for each node using the `mmwsdr` library. The SDR object configures and controls a Xilinx RFSoC ZCU111 eval board and a Sivers IMA transceiver board. A user can provide arguments to the script, such as the carrier frequency, the COSMOS node id and the transceiver mode. The script by default starts a local and a remote connection with the SDR.
+ 1. Start the remote Eder server on the :
+{{{#!shell-session
+root@srv1-in1:~/mmwsdr/host/mmwsdr/array$ python ederarray.py --unit SN0240
+}}}
+ 2. Start the experiment on the local server:
+{{{#!shell-session
+root@srv1-in2:~/mmwsdr/host/demos/basic$ python twonode.py --freq 60.48e9 --mode tx
+}}}
+
+=== Channel Sounder ===
+In this demo, we show a frequency-domain channel sounder at 60 GHz. We generate N_FFT symbols in
+frequency-domain. We generate a wide-band sequence filling [sc_min, sc_max] sub-carries with random 4-QAM symbols. We
+use IFFT to get the time-domain TX sequence. We transmit the data from SDR1 with cyclic repeat. We receive 100 frames
+of N_FFT data from SDR2. The user can select to save or process the data. When we process the data
+
+In this section we demonstrated a frequency-domain channel sounder. We generate a tx sequence using `mmwave.utils.waveform.wideband` function.
 
 === Calibration ===
-=== Channel Sounder ===
-In this section we demonstrated a frequency-domain channel sounder. We generate a tx sequence using `mmwave.utils.waveform.wideband` function.
+In this demo, we use the calibration techniques by Sivers. The performance of the calibration can be further improved with the IQ calibration techniques described in the following papers,
+
+1. A. Dhananjay, K. Zheng, M. Mezzavilla, L. Iotti, D. Shasha, and S. Rangan, "Pi-Radio v1: Calibration techniques to enable fully-digital beamforming at 60 GHz," Computer Networks, Volume 196, 2021, 108220, ISSN 1389-1286, https://doi.org/10.1016/j.comnet.2021.108220.
+2. A. Dhananjay, K. Zheng, J. Haarla, L. Iotti, M. Mezzavilla, D. Shasha, and S. Rangan, "Calibrating a 4-channel Fully-Digital 60 GHz SDR," In Proc. of the 14th International Workshop on Wireless Network Testbeds, Experimental evaluation & Characterization (WiNTECH'20). Association for Computing Machinery, New York, NY, USA, 40–47. https://doi.org/10.1145/3411276.3412195
+
+Originally this techniques target a 4-channel fully-digital array. However, the algorithms are versatile and can target the phased arrays as well.
+
+==== Calibrate RX IQ imbalance ====
+{{{#!shell-session
+root@srv1-in1:~/mmwsdr/host/mmwsdr/array$ python ederarray.py --unit SN0240
+}}}
+
+==== Calibrate TX IQ imbalance ====
+{{{#!shell-session
+root@srv1-in1:~/mmwsdr/host/mmwsdr/array$ python ederarray.py --unit SN0240
+}}}
+
 
 === Array Pattern ===
 {{{#!shell-session
-root@srv1-in1:~/mmwsdr/host/demos/$ python array_pattern.py --node srv1-in1
-}}}
-=== Beam Tracking Measurements ===
+root@srv1-in1:~/mmwsdr/host/mmwsdr/array$ python ederarray.py --unit SN0240
+}}}
+{{{#!shell-session
+root@srv1-in2:~/mmwsdr/host/demos/basic$ python twonode.py --freq 60.48e9 --mode tx
+}}}
+
+=== Beam Tracking ===