Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1998-12-11
2000-10-10
Ghebretinsae, Temesghen
Pulse or digital communications
Receivers
Interference or noise reduction
375349, 375130, H04L 102
Patent
active
061309230
ABSTRACT:
A wireless receiver receiving multipath Wash-code symbols determines which of fingers 402, 410 have locked on a signal. Measurements of the correlation energies between the received signal and all possible symbols are stored in energy storage units 404, 412. The actual signals are combined in combiner 408. A maximum determiner 416 determines the most likely combined symbol, and an index for this symbol is fed back to the energy storage units. Lock detectors 406, 414 use the measurement for this fed-back symbol to determine whether the finger has locked onto a path. This determination is used to decide whether the next signal detected by that finger should be applied to the combiner.
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Levin Jeffrey A.
Riddle Christopher C.
Sherman Tom B.
Edmonston Brian S.
Ghebretinsae Temesghen
Qualcomm Incorporated
Streeter Tom
Wadsworth Philip
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