Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-07-11
2006-07-11
Patel, Jay K. (Department: 2637)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S340000, C375S346000, C455S522000
Reexamination Certificate
active
07075970
ABSTRACT:
A method of decoding turbo-encoded, received data in CDMA (Code Division Multiple Access) system which carries out closed-loop control to electric power of a data transmitter, based on a signal to interference ratio, includes the steps of (a) weighting reverse-diffused, received data, based on both the signal to interference ratio and data obtained when the signal to interference ratio is measured, (b) carrying out ACS operation or comparison/selection operation in a process of updating alpha metric, a process of updating beta metric, and a process for computing likelihood, to the thus weighted, received data, and (c) compensating for results of the ACS operation, based on a predetermined value associated with a difference generated when the ACS operation or the comparison/selection operation is carried out.
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Dickstein Shapiro Morin & Oshinsky LLP.
Meek Jacob
NEC Corporation
Patel Jay K.
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