## Principles of communication systems |

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### Contents

SPECTRAL ANALYSIS | 1 |

RANDOM VARIABLES AND PROCESSES | 43 |

AMPLITUDEMODULATION SYSTEMS | 81 |

Copyright | |

13 other sections not shown

### Common terms and phrases

amplifier amplitude amplitude-modulated antenna applied assume average bandlimited bandpass bandwidth baseband filter baseband signal calculate carrier frequency circuit code word communication system constant corresponding crosstalk decoder delta modulation demodulator discriminator discussion distortion encoded FM signal Fourier transform frequency deviation frequency modulation frequency range gaussian given in Eq Hence impulse increases input signal instantaneous integrator low-pass filter matched filter modulating signal multiplexing multiplier nc(t noise power normalized power oscillator output signal output SNR phase phasor plot power spectral density preemphasis Prob probability density probability of error quantization levels random variable RC circuit received signal resistor result sampled signal shown in Fig si(t sideband signal m(t signal power signal-to-noise ratio sinusoidal spectral components spectrum spike Suppose synchronous theorem threshold time-division multiplexed transfer function transmission transmitted two-port voltage waveform zero