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I need a MATLAB code that goes step-by-step in transmitting over time and frequency selective channels

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Hello,
I need a MATLAB code that goes step-by-step in transmitting a bit sequence from the source to the destination over a time and frequency selective channel, considering into account the relative speed between the transceivers v, the propagation speed c, and the carrier frequency fc. The signal is Wide-band, i.e.: the ratio between the signal bandwidth and carrier frequency is not negligible. OFDM is used as a means to combat the multipath fading.
Thanks in advance
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Saed
Saed el 7 de Nov. de 2012
Actually I am working on a project's report, and I need to demonstrate the effect of Doppler factor on the performance of OFDM.

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