5.5.2 Matched-filter type demodulator A Matched Filter (MF)to s(t)is defined as a LTI filter whose impulse response is as h()=Cs(T-1),where C is any non-zero constant and T is y(r) s(0 h(0=s(T-0l (T刀 A A corrupted as is easured as fo 0 Sampling 0 2T r() y() y(T) MF is the optimal filter h(r) whenh(t)=Cs(T-1) Compute, I)=h0*r0lhr=∫h(r)rt-r)dr,=∫hr)rT-r)dr =∫h(r)s(T-x)dr+∫h(r)n(T-t)dr UESTC-Digital transmission through the AWGN channel Prof李晓峰 8