Apparatus for acquisition of asynchronous wideband DS/CDMA...

Details Apparatus for acquisition of asynchronous wideband DS/CDMA... Apparatus for acquisition of asynchronous wideband DS/CDMA...

2005-01-11

2005-01-11

Chin, Stephen (Department: 2634)

Pulse or digital communications

Spread spectrum

C370S335000, C370S348000

Reexamination Certificate

active

06842475

ABSTRACT:
An apparatus for acquisition of an asynchronous wideband direct-sequence/code division multiple access signal, which acquires a long code from a direct-sequence/code division multiple access control channel signal, in which a common short code, and the long code are transmitted within one frame, and a group identification code indicating a code group, to which a base station belongs, are combined and transmitted with the common short code, includes: a long code masking correlation portion; a differentially coherent combining portion; a code group and frame timing acquisition portion; and a long code acquisition portion for acquiring the long code by correlating the long codes belonging to the acquired code group and the received long code, respectively.

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patent: 0 884 856 (1998-12-01), None

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