A transmission system employs a quaternary amplitude modulation with waveforms where A = 1 V and…

A transmission system employs a quaternary amplitude modulation with waveforms

where A = 1 V and hTx(t) = rect(t/T ) is a rectangular pulse with duration T = 16 ns. By considering a channel with AWGN noise having PSD  determine:

a) The incorrect transition probabilities of the inner numerical channel by assuming an optimum receiver.

b) The bit error probability when the bit mapping is

c) The bit error probability when the bit mapping is

Which of the two bit mappings is more appropriate?

 

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