Pulse or digital communications – Repeaters – Testing
Patent
1993-09-17
1994-10-04
Cain, David C.
Pulse or digital communications
Repeaters
Testing
380 34, H04K 100
Patent
active
053533011
ABSTRACT:
A method and apparatus for combining multipath spread-spectrum signals are provided. The multipath combining is accomplished by detecting an envelope of an input differential phase shift keyed signal communicated over a communication channel. Subsequently, a replica of a multipath echo structure for the communication channel is detected within the detected envelope. In addition, a multipath echo structure weighted differential phase shift keyed signal with the detected replica of the multipath echo structure for the communication channel. Finally, the multipath echo structure weighted differential phase shift keyed signal is integrated over a one symbol period centered on a correlation peak such that power from a plurality of signal paths determines an output data bit.
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Cain David C.
Dempster Shawn B.
Motorola Inc.
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