On 08/06/2011 06:27 PM, shantharam balasubramanian wrote:
Hi
I have been working in usrp2 testbed, and I have been modifying
the benchmark_tx and rx programs for my project. There have been
situations where I was supposed to introduce noise to find out
BER. I did that by giving lower transmitter amplitude values. But
very low values cause packet loss along with higher BER values. I
just want to know if there Is there anyway to just cause high BER
values, without causing packet loss? Is there any way I can do
that inside the program or should I do it by any other way e.g.by using
some noise producing source?
Well, in real-world radio communications systems, low-SNR *does*
cause packet loss. That's entirely expected. Nature doesn't
discriminate
between packet-synchronization data, and the actual payload data.
--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org
|