Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-01-25
2005-01-25
Liu, Shuwang (Department: 2634)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
06847677
ABSTRACT:
A method and apparatus is provided for efficient processing of signal in a communication system. The processing of the signal for transmission may include encoding a block of data at an encoding rate 1/R. The encoding produces R number of data symbols for every data bit in the block of data. A block of RAM is partitioned into a plurality of blocks of RAM to allow reading simultaneously data symbols from the plurality of blocks of RAM to produce an in-phase and a quad-phase data symbols simultaneously. At least two scramblers are used for simultaneously scrambling the in-phase and quad-phase data symbols. A Walsh covering/summing block followed by the scramblers provides efficient Walsh covering and summing of signals for a combined transmission from the communication system.
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Hurt James Y.
Schlegel Nikolai
Liu Shuwang
Madill Erin P.
Nguyen Thien T.
Qualcomm Incorporated
Wadsworth Philip R.
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