Digital Communication Systems Design

additive amplitude analog approach approximately assume average bandwidth baseband signal becomes binary bit error rate block BPSK carrier channel chapter choose code words coherent combinations communication correct decision demodulator density derived detection detector discussed distributed equal examine example Figure filter frame frequency function Gaussian given illustrated incoherent increases input integral interval known length loop matched filter maximum mean modulation multiplier noise Note occur operation original output packet particular performance period phase possible presented probability problem provides pulse quantization random receiver represents result sample sequence shift shown in Fig shows signal-to-noise ratio simple single sinusoidal Solution specified spectrum square Suppose switching symbol synchronization technique term tion transform transmission transmitted users variable various waveform zero