Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-11-16
2011-10-18
Tran, Khanh C (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
Reexamination Certificate
active
08040935
ABSTRACT:
The present invention relates to a method and an apparatus for spread spectrum modulation and demodulation using a special spread spectrum sequence, characterized in that Golay complementary codes are modulated onto orthogonal channels such that a corresponding complex complementary code is obtained. The signal spread by such complex complementary code has a low peak-to-average power ratio, a sound self-correlation property and cross-correlation property, which can well solve the problem of multi-access interference such that the communication performance of the entire system is improved.
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The International Search Report corresponding to PCT/CN2006/003080 with a mailing date of Mar. 8, 2007.
Chen Xiaoyan
Song Chaosheng
Miartech, Inc.
Quarles & Brady LLP
Tran Khanh C
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