Removing fading effect in OFDM receiver
Category: Computers > Wireless and Mobile
Asked by: persian_eagle-ga
List Price: $15.00
06 Aug 2006 05:38 PDT
Expires: 05 Sep 2006 05:38 PDT
Question ID: 753097
Could you please tell me how I can remove the effect of fading in an BPSK OFDM receiver? My channel is a static flat fading: gnoise = (noise_var) * sqrt(1/2) * (randn(1,symbol_size) + j*randn(1,symbol_size)) a = randn(1,symbol_size) + j*randn(1,symbol_size) r = a.*ofdm_symbol + gnoise at the receiver I have tried the following techniques to remove the effect of channel: y = fft(ofdm_sym)./fft(a) and also in another attempt I tried: temp = r .* conj(a) y = fft(temp) unfortunately none of them help me to get an error rate near the theoretical curve for BPSK OFDM flat fading.
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Re: Removing fading effect in OFDM receiver
From: sparkysko-ga on 07 Aug 2006 15:19 PDT
You need to add a BFO and run SSB.
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