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[Discuss-gnuradio] QPSK modulation with Relay
From: |
Vaibhav Bhatnagar |
Subject: |
[Discuss-gnuradio] QPSK modulation with Relay |
Date: |
Mon, 14 Jul 2008 12:33:24 +0200 |
Hi,
We just received 2 USRP mother boards, and 4 RFX2400 boards with 4 vert
antennas, I have installed them and connected with two separate PCs (os
ubuntu 8.04). *I installed all the required packages*
I did benchmark_tx and rx and siggen.py and got same results as
explained in given documents on gnuradi.org.
I tried to look for qpsk implementation but I couldn't understand well
how to start with.
Can somebody explain me step by step which files I have to use. I got
little idea but I am not very much sure.
I want to perform qpsk first 1X1, 1X2 and 1 tx, 2 relays, 1 rx.
*I want to describe some problems also*:
1- I have connected both of Tx/Rx (of two flex 2400) port with vert
antennas, which side is A and which side is B.
2- If I fire one Tx/Rx from 1 pc (usrp_siggen.py or usrp_benchmark_tx -f
2440M -T A or B) and try to receive on the 2nd pc (usrp_oscope.py or
usrp_fft.py) at the same time same computer using two linux terminals.
It shows reception only on one terminal on others it show couldn't find
USRP 1.
Appreciate your answers.
Thanks in advance!
-Vaib
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