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[Discuss-gnuradio] [benchmark_ofdm]

From: Rita's pfc
Subject: [Discuss-gnuradio] [benchmark_ofdm]
Date: Tue, 7 Apr 2009 10:32:20 -0700 (PDT)

I'm using benchmark_ofdm tx and rx in 2.4 GHz. I'm trying to transmit a
fixed size of payload everytime (1328 Bytes). My problem is I don't know
what values I must put in the parameters: fft-length, occupied-tones,
cp-length. I know that fft-length is the total number of subcarriers, cp the
cyclic prefix, occupied-tones number of subcarriers used for data. I have
been running modifications of these benchmarks, and the best performance I
get is when the values of these parameters are: fft-length 512, cp 128,
occupied tones 300. In this case, the 80 % of paquetes I receive are right. 
How can I calculate the apropiate values ? Must I used the parameter "-s"
for fixed the packet size to the one I want, 1328? what happen with the "-i"
and "-d" in the transmitter and the receiver?

Thank you 
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