| 摘要 |
A communication system for improved reception of signals over distorted communication channels, multipath environments and telephone cables is disclosed in which phase shift keyed coded pulses are transmitted such that their respective multipath contributions are separable at a differentially adaptive receiver which stores previous samples of the distorted transmitted pulse for use as a reference in a coherent matched filter type detector employing decision feedback to allow coherent detection without channelizing filters in systems using both binary and four phase modulation. The differentially adaptive receiver is employed both in modulator-demodulator type systems and in predetection combination communication systems.
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