Communication receiver

Pulse or digital communications – Spread spectrum – Direct sequence

Reexamination Certificate

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C375S136000, C375S147000

Reexamination Certificate

active

10721950

ABSTRACT:
A timing and carrier error detector module (127) of a communication receiver (111). The timing and carrier error detector module uses phase information of a correlated signal (e.g. a Barker de-spread signal) to generate a timing signal and carrier error signal. In one example, the phase information includes a phase error signal of the correlated signal. In one example, the timing and carrier error detector module calculates an indication of the variance of the phase error signal for a plurality of sample positions over a plurality of Barker symbol intervals. The timing signal is based upon the sample position having a minimum indication of a variance.

REFERENCES:
patent: 4518947 (1985-05-01), Poston et al.
patent: 5388126 (1995-02-01), Rypinski et al.
patent: 5898665 (1999-04-01), Sawahashi et al.
patent: 6052409 (2000-04-01), Quirk et al.
patent: 6865174 (2005-03-01), Tsubouchi et al.
patent: 7161996 (2007-01-01), Steele et al.
patent: 2004/0076246 (2004-04-01), Vanderperren et al.
patent: 2004/0101068 (2004-05-01), Wang et al.
patent: 2006/0165187 (2006-07-01), Troya et al.
patent: 2007/0025430 (2007-02-01), Rasmussen
Cheng et al., “Joint Synchronization and Data Detection Digital Receiver for Direct Sequence Spread Spectrum Systems,”IEEE, 0-7803-3659-3/97, Mar. 1997, pp. 2103-2107.
Halford et al., “Multipath Measurement in Wireless LANs,”Intersil Application Note AN9895.1, Oct. 2001, pp. 1-8.
Intersil ISL37300U-EVAL,Intersil Data Sheet File No. 8030, Nov. 2001, pp. 1-5.
Intersil ISL3873B,Intersil Data Sheet FN8019.2, Jun. 2002, pp. 1-42.
Ishizu et al., “Simultaneous Estimation of Code and Frequency of DS/SS Signals of Multiple-LEO-Satellite Communication Systems,”IEEE, 0-7803-3871-5/97, May 1997, pp. 1019-1023.
Joseph et al., “Run-Time Power Estimation in High Performance Microprocessors,”ISLPED'01, Aug. 6-7, 2001, Huntington Beach, California, pp. 135-140.
Lashkarian et al., “Minimum Variance Unbiased Estimation of Frequency Offset in OFDM Systems, a Blind Synchronization Approach,”IEEE 0-7803-6293-4/00, Apr. 2000, pp. 2945-2948.
Mauss et al., “Carrier Frequency Recovery for a Fully Digital Direct-Sequence Spread-Spectrum Receiver: A Comparison,”IEEE 0-7803-1266-x/93, 1993, pp. 392-395.

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