Consider a channel with exponential MIP Rc _ = 1
_0 exp __ _0 .
a. Determine the signal to ISI ratio for this system using
NRZ pulse shaping. What happens as _0 _? Discuss how the SIR is
affected by the sequence of transmitted symbols. Which sequence minimizes the
SIR?.
b. Consider a Rayleigh fading channel with _0 = 1
_s delay spread and AWGN is negligible compared to ISI. Determine the
maximum data rate in this ISI-limited channel for coherent BPSK and bit error
probability _10_5 .
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