Optimized communications system and method employing channel syn

Pulse or digital communications – Repeaters – Testing

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375 18, 375 58, 375 81, H04B 314

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046726322

ABSTRACT:
An optimized communications system and method, particularly for digital signals, employs overall channel synthesis for providing a desired overall time response. A channel transfer function defining a plurality of time response determining elements having values that provide the desired overall time response is selected, and the system is synthesized by allocating to the transmitter and to the receiver the time responds determining elements so as to provide a system transfer function that corresponds to the selected channel transfer function and so as to optimize preselected characteristics of the transmitter and the receiver. A carrier may be phase shift modulated in accordance with the digital signals so as to afford a predetermined phase change that extends over a complete bit interval, and a phase lock loop detector may be employed for demodulating the phase shift modulated carrier.

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