Communication Systems: An Introduction to Signals and Noise in Electrical Communication |
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Page 114
An Introduction to Signals and Noise in Electrical Communication A. Bruce Carlson. 4 Random Signals and Noise The signals dealt with in previous chapters were deterministic signals , i.e. , writing an explicit time function x ( t ) ...
An Introduction to Signals and Noise in Electrical Communication A. Bruce Carlson. 4 Random Signals and Noise The signals dealt with in previous chapters were deterministic signals , i.e. , writing an explicit time function x ( t ) ...
Page 141
... RANDOM SIGNALS Up to this point we have been speaking in rather general terms about random variables and their statistical averages . Now we concentrate on random signals , the manifestations of random electrical processes which take ...
... RANDOM SIGNALS Up to this point we have been speaking in rather general terms about random variables and their statistical averages . Now we concentrate on random signals , the manifestations of random electrical processes which take ...
Page 145
... random signal is its probability func- tion and ensemble averages , the latter being directly related to average power if the source is ergodic . Invoking the Wiener ... random telegraph wave - Figure 4.9 shows 4.5 145 RANDOM SIGNALS.
... random signal is its probability func- tion and ensemble averages , the latter being directly related to average power if the source is ergodic . Invoking the Wiener ... random telegraph wave - Figure 4.9 shows 4.5 145 RANDOM SIGNALS.
Contents
Introduction | 1 |
Signals and Spectra | 15 |
Signals and Linear Networks | 67 |
Copyright | |
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amplifier analysis approximately average power band bandlimited bandwidth baseband binary carrier frequency channel chap circuit communication systems components constant demodulator density function detection distortion electrical electron entropy envelope detector equivalent error probability example exponential modulation Fourier series gaussian Hence ideal impulse response input integration line spectrum linear modulation lowpass filter message band modulating signal narrowband noise power nonlinear phase shift phasor postdetection power spectrum predetection quantized random signals random variable receiver rectangular pulse resistor sample values shown in Fig signal x(t signal-to-noise ratio signaling speed sinusoidal spectra statistically independent symbols synchronous techniques temperature theorem theory threshold tion tone modulation transfer function transmission bandwidth two-port variations voltage waveform white noise xc(t zero