Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-05-22
2007-05-22
Payne, David C. (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S140000, C375S147000
Reexamination Certificate
active
10265525
ABSTRACT:
A system and method for spread spectrum communication primarily for use in mobile CDMA communication systems. The system receiver has simplified architecture, comprising a channel compensator and correlation detector. The channel compensator has a channel estimator and signal constructor. In a preferred embodiment, the channel estimator periodically computes the cross-ambiguity function of the transmitted and received pilot signals of the CDMA system using computationally efficient processing algorithms. The signal constructor uses the estimated multipath parameters to construct a new signal on which effects of the multipath channel is considerably mitigated.
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Arikan Orhan
Ozdemir Ahmet Kemal
ALTRATEK, Inc.
Day Jones
File Erin M.
Payne David C.
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