ROM-based PN generation for wireless communication

Details ROM-based PN generation for wireless communication ROM-based PN generation for wireless communication

2005-08-30

2005-08-30

Liu, Shuwang (Department: 2634)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S145000, C375S152000, C375S130000, C370S321000, C370S342000, C342S363000, C342S357490

Reexamination Certificate

active

06937643

ABSTRACT:
A device includes a request arbitration unit that (1) receives a number of requests for PN vectors from a number of processing units and (2) provides a control indicative of each request selected for processing. An address generator provides one or more addresses (which may be dependent on a particular PN sequence being requested and the offset of the PN sequence) for each selected request. One or more memory units store all “base” PN sequences (e.g., and X(i) sequence and a Y(i) sequence defined by W-CDMA) that may be used to generate all requestable PN vectors. The memory unit(s) provide one or more segments of one or more base PN sequences, based on the address(es). A buffering unit provides a set of one or more PN vectors derived from the one or more PN segments for each selected request.

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Patent Abstracts of Japan, vol. 2000, No. 15, Apr. 6, 2001 & JP 2000 349681 A (NEC Corp), Dec. 15, 2000 abstract.

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