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 <http://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
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