Principles of Digital Communications |
Contents
INFORMATION THEORY | 20 |
DIGITAL TRANSMISSION | 33 |
INFORMATION THEORY | 110 |
Copyright | |
3 other sections not shown
Common terms and phrases
achieved amplitude amplitude modulation analogue signal bandwidth baseband binary data binary digits bit/s bit/symbol carrier channel capacity chapter circuit-switched code words communication network communication systems data transmission delta modulation demodulator destination detection Determine differential p.c.m. digital communication digital signals digital transmission entropy erlang error probability frequency modulation frequency-division multiplex given gives illustrated in Fig information conveyed Information Theory input instantaneously decodable length linear quantizer low-pass filter maximum message-switching network methods modulating signal multiplexed signals noisy channel nonlinear quantization number of channels number of signalling Nyquist rate occur output p.a.m. signal packet packet-switching centre packet-switching network probability of error pulse train pulse-amplitude modulation pulse-code modulation quantization error quantization intervals received signal received symbol retransmission routing shown in Fig signal-to-noise ratio signalling levels signalling rate signalling waveforms slot switching centre telephone terminal ternary signalling time-division multiplexed time-division switch transmission system uniquely decodable x₁