Digital signal processor modem
作者： Tommy Y. Leung , Mark A. Waldron
DOI:
关键词: Common-mode signal 、 Analog transmission 、 Computer hardware 、 Signal 、 Transmission (telecommunications) 、 Multiplexing 、 Analog signal 、 Digital signal 、 Computer science 、 Electronic engineering 、 Digital signal processor
摘要: A dual speed, full duplex modem (Fig. 6) for transmitting and receiving data on a dial-access telephone line includes signal processor (26, 38) storing samples corresponding to mu-law compressed sinusoidal waveform, selecting at intervals determined by the operating mode synthesize modulating transmission, autocorrelating received frequency operation recover from signal. The configuring input ports, microcomputer receives instructions related output mode-configuring word inputs. Conversion processor's digital analog line's takes place through two time-division multiplexed coder-decoder (D/A 30 A/D 34).
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