Ahmed Alaa
Full Member level 5
Hi all,
I'm performing OFDM equalizer for a pilot assisted system. The system parameters are:
Signal BW = 6 MHz
Carrier = 700 MHz
chip rate = 5.55 MHz
Doppler shift corresponds to max 200 km/s receiver speed
Fading channel is a Rayleigh fading channel, the problem is that when I apply the channel to signal, the channel has a very rapidly varying Channel frequency response that the pilots cannot cope with all variations, I call the Rayleigh function as follows:
chan = rayleighchanrayleighchan(1/5550000, Doppler_shift, Path_delays, Path_gains);
I use the fft functions without indicating the sampling frequency.
I'm performing OFDM equalizer for a pilot assisted system. The system parameters are:
Signal BW = 6 MHz
Carrier = 700 MHz
chip rate = 5.55 MHz
Doppler shift corresponds to max 200 km/s receiver speed
Fading channel is a Rayleigh fading channel, the problem is that when I apply the channel to signal, the channel has a very rapidly varying Channel frequency response that the pilots cannot cope with all variations, I call the Rayleigh function as follows:
chan = rayleighchanrayleighchan(1/5550000, Doppler_shift, Path_delays, Path_gains);
I use the fft functions without indicating the sampling frequency.