Pulse or digital communications – Repeaters – Testing
Patent
1992-03-25
1993-08-17
Gregory, Bernarr E.
Pulse or digital communications
Repeaters
Testing
380 34, 380 9, 370 18, 370 19, 370 20, 370 21, 370 22, 455 521, 455 65, H04L 2730, H04J 1100, H04J 1300
Patent
active
052375862
ABSTRACT:
A modified RAKE receiver, referred to as a WRAKE receiver, is used in CDMA communications. It is particularly adaptable to a subtractive CDMA system. The receiver includes a radio receiver for receiving and demodulating a composite signal of overlapping transmitted signals (spread signals), a sampler to sample the received signals, a selector for selecting different groups of samples, a correlator for correlating the samples with known despreading codes and a comparator to determine the symbol transmitted. The receiver also includes a combiner which combines either different groups of samples together or combines different correlation values together. The sample groups selected are channel independent and combine data received from different time shifts. Likewise, the sample groups for each channel and the correlation values are time-of-arrival independent.
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Ericsson-GE Mobile Communications Holding Inc.
Gregory Bernarr E.
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