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RANDOM SIGNAL THEORY
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AM-DSB AM-DSB/SC amplifier amplitude analysis antenna approximately assumed autocorrelation function average band-limited bandwidth bits/sec carrier channel capacity Chap communication system components consider defined denoted detection Determine digits diode Dirac delta function discrete electrons em(t entropy evaluated example follows Fourier series Fourier transform frequency modulation frequency spectrum gaussian given Hence illustrated in Fig impulse response integral linear envelope detector low-pass filter maximum mean-square error mean-square value modulation noise figure noise power noise voltage obtain output noise output signal output signal-to-noise ratio output-noise power phase Prob probability density function pulse quency radar random process random signal random variable receiver resistor sample function sample points sampled value shot noise shown in Fig sideband single-frequency noise figure sinusoid statistically independent subset symbols temperature term Theorem theory tion transmitted tube voltage wave waveform white noise width yield zero