Wireless communications system with secondary...

Details Wireless communications system with secondary... Wireless communications system with secondary...

2009-12-15

2010-12-28

Phu, Phuong (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S142000, C375S145000, C370S208000, C370S235000, C370S342000

Reexamination Certificate

active

07860152

ABSTRACT:
A wireless communication system. The system comprises transmitter circuitry (BST1), the transmitter circuitry comprising encoder circuitry (50) for transmitting a plurality of frames (FR). Each of the plurality of frames comprises a primary synchronization code (PCS) and a secondary synchronization code (SSC). The encoder circuitry comprises of circuitry (501) for providing the primary synchronization code in response to a first sequence (32). The encoder circuitry further comprises circuitry (502) for providing the secondary synchronization code in response to a second sequence (54) and a third sequence (56). The second sequence is selected from a plurality of sequences. Each of the plurality of sequences is orthogonal with respect to all other sequences in the plurality of sequences. The third sequence comprises a subset of bits from the first sequence.

REFERENCES:
patent: 5715236 (1998-02-01), Gilhousen et al.
patent: 5930366 (1999-07-01), Jamal et al.
patent: 6385264 (2002-05-01), Terasawa et al.

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