Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2004-09-17
2009-06-23
Payne, David C (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S148000, C375S140000
Reexamination Certificate
active
07551664
ABSTRACT:
A system, terminal, receiver and method are provided for receiving and processing a signal received from a spread-spectrum downlink channel. The method includes receiving the signal from the downlink channel, and generating an estimate of a transmitted chip sequence in accordance with an iterative process. In this regard, the iterative process includes calculating statistical information, such as a mean and covariance, for a previous iteration of a transmitted chip sequence, the statistical information being selectively calculated based upon one of soft bits and soft symbols associated with the previous iteration of the transmitted chip sequence. The estimate for a current iteration of the chip sequence is then generated based upon the statistical information.
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Dowling Joe
Mandyam Giridhar
Nguyen Hoang
Zhang Jianzhong (Charlie)
Alston & Bird LLP
Nokia Corporation
Payne David C
Stevens Brian J
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