Reduced complexity correlator for use in a code division...

Details Reduced complexity correlator for use in a code division... Reduced complexity correlator for use in a code division...

2006-05-02

2006-05-02

Chin, Stephen (Department: 2634)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S143000, C375S148000, C375S140000

Reexamination Certificate

active

07039134

ABSTRACT:
A reduced complexity correlator that enables the re-use of the most complex portions of a correlator, namely the multiplier and adder. The correlator of the present invention is especially well-suited for use in CDMA and W-CDMA spread spectrum communication systems that require the use of numerous correlators in their operation. Multiple input samples, multiple codes and integration results are stored in shift registers and circularly shifted and clocked out at appropriate clock rates such that the multiplication and accumulation steps of the correlation process are synchronized.

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L. Harju, M. Kuulusa, and J. Nurmi, A Flexible Rake Receiver Architecture for WCDMA Mobile Terminals, Third IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Communications, Mar. 20-23, 2001.

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