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Re: [Discuss-gnuradio] FEC

From: William Cox
Subject: Re: [Discuss-gnuradio] FEC
Date: Tue, 22 Jun 2010 15:19:22 -0400

What's your received signal power? 
For instance, this guy (no idea if he's right) shows simulated GMSK BER curves with a 5e-3 BER anywhere from 8db - 14db depending on the bandwidth-time product: http://iaci.unq.edu.ar/materias/telecomunicaciones/archivos/infoadicional/esquemas_de_modulacion_digital.pdf
Just a thought. Since it's corrupt packets you're talking about and not bits, things should be a bit different, but with any decent FEC the packet error rate should be much lower than that.

On Tue, Jun 22, 2010 at 1:15 PM, Jakub Moskal <address@hidden> wrote:

I'm using the digital/benchmark_*.py from the GIT repository and am
getting a very low ratio of corrupt packets, usually under 0.5%. I use
the default gmsk modulation, USRP1's with RFX2400 and run the
benchmark with a frequency of 2.4G. Would this low ratio suggest that
the FEC is being applied somewhere along the path, or not necessarily?
I cannot find any piece of code which would prove it.


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