Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2001-08-07
2008-10-21
Ghebretinsae, Temesghen (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000, C375S316000
Reexamination Certificate
active
07440489
ABSTRACT:
A spread spectrum signal is processed by correlating the spread spectrum signal with a spreading sequence at a first plurality of correlation times to produce a first plurality of time-offset correlations. The first plurality of time-offset correlations is processed to produce a first symbol representation for a symbol. A first quality is determined for the first symbol representation. Responsive to the determined first quality, it is determined whether to further process the first symbol representation or to process a second symbol representation for the symbol generated from the spread spectrum signal. The first quality may be determined, for example, by decoding the first symbol representations to generate a decoding metric or error check indicator, such as a CRC result. The symbol representations may be generated and/or evaluated for quality in a serial fashion or a parallel fashion.
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Bottomley Gregory E.
Dahlman Erik
Dent Paul W.
Khayrallah Ali
Östberg Christer
Coats & Bennett P.L.L.C.
Ericsson Inc.
Ghebretinsae Temesghen
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