Advanced Electronic Communications Systems |
Contents
DATA COMMUNICATIONS | 50 |
DATA COMMUNICATIONS | 98 |
Public Data Network | 123 |
Copyright | |
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2-to-4-level converter 8PSK amplifier amplitude analog input analog signal angle b₁ Balanced modulator bandwidth baseband baud bit rate block diagram BPSK called carrier frequency channel banks chip code circuit clock codec companding compression Consequently data communications data link data rate decoding demodulated detector determine digital transmission earth station encoding equivalent noise temperature error fiber cable fiber optic format HDLC input signal interface light rays logic loss mastergroup Mbps microwave minimum bandwidth mode modem multiplexing noise figure number of bits optical fiber output power output spectrum packet parity path loss PCM code primary product detector propagation protocol pulse Q-channel QPSK quantization radio ratio refractive sample satellite system SDLC secondary station segment sequence shown in Figure step-index fiber supergroup switch synchronous terminal transmit voice band voice band channels voltage