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470
Random Processes and Spectral Analysis Chap. 6
r(t)=s(t)+n(t)
A
Integrator
Reset
r 0 (t)
B
Sample
and hold
Output
C
Integrator resets to
zero initial condition at
clocking time.
D
Clocking signal
(bit sync)
Waveform at A
(input signal
and noise)
Waveform at B
Waveform at C
(output )
Waveform at D
(clock)
Figure 6–17
T
Integrate-and-dump realization of a matched filter.
r(t)=s(t)+n(t)
Integrator
t 0
[r(t)s(t)]dt
t 0 -T
r 0 (t 0 )
s(t)
(Known signal)
Reference input
Figure 6–18
Matched-filter realization by correlation processing.