Changes between Version 12 and Version 13 of Tutorials/Wireless/mmwave Paam Link Rate

Timestamp:

Mar 1, 2024, 7:33:09 PM (9 months ago)

Author:

zhihuigao

Comment:

—

Tutorials/Wireless/mmwave Paam Link Rate

@@ -231 +231 @@
 
 {{{#!shell
-    % USRP Setting
-    param.carrier = 3.0e9;
-
-    param.subdevTx = "A:0";
-    param.deviceTx = "192.168.70.3";
-    param.gainTx = 15;
+% USRP Setting
+param.carrier = 3.0e9;
+
+param.subdevTx = "B:0";
+param.deviceTx = "192.168.70.3";
+param.gainTx = 60;
     
-    param.deviceRx = "192.168.70.9";
-    param.subdevRx = "A:0";
-    param.gainRx = 15;
+param.deviceRx = "192.168.70.9";
+param.subdevRx = "B:0";
+param.gainRx = 40;
 }}}
 
-{{{param.carrier}}}: the carrier frequency of the TX and RX;
+{{{param.carrier}}}: the carrier frequency of the TX and RX. Please set it as {{{3.0e9}}} for 3 GHz carrier frequency to the IBM 28 GHz PAAM.
+
+{{{param.deviceTx}}} and {{{param.deviceRx}}}: the IP address of the TX/RX USRP, which is {{{XXX}}}.
+
 {{{param.subdevTx}}} and {{{param.subdevRX}}}: the subdevice settings of the TX/RX USRP. The connection on the sb2 requires to set both parameters as {{{B:0}}}.
-{{{param.gainTx}}} and {{{param.gainRx}}}: the TX/RX gain of the USRPs, whose range varies over different USRP types, which can be find by running {{{uhd_usrp_probe}}} command in the terminal. In sb2, the recommended values are {{{60}}}.
-
-==== Run the experiment ====
-
-==== Observe the results ====
-
-==== Finish the experiments ====
+
+{{{param.gainTx}}} and {{{param.gainRx}}}: the TX/RX gain of the USRPs, whose range varies over different USRP types, which can be find by running {{{uhd_usrp_probe}}} command in the terminal. In sb2, the recommended value for {{{param.gainTx}}} is {{{60}}}, for {{{param.gainRx}}} is {{{40}}}.
+
+==== Conduct the transmission ====
+
+In MATLAB, open {{{main.m}}}, and directly run this script.
+
+The displayed information include:
+
+{{{CFO}}}: carrier frequency offset
+
+{{{SNR}}}: signal-to-noise ratio
+
+{{{EVM}}}: error vector magnitude
+
+{{{BLER}}}: block error rate (only one block is transmitted and it can be either 0 for success and 1 for failure);
+
+{{{BER}}}: bit error rate
+
+{{{CSI}}}: the amplitudes and the phases of the channel state information over all the subcarriers
+
+{{{Constel.png}}}: the saved constellation plot.
+
+==== Change the SNR/MCS ====
+
+To change SNR, you may either
+
+Change the amplitude (by default, 0.5) of the generated waveform in line 13 of main.m, or
+Change the TX gain in GetParam.m
+To change MCS, open GetParam.m and customize param.modu for modulation and param.code for code rate.
+
+Note that we always assign the TX/RX port for transmission and RX2 port for reception.