Channel estimation in a spread spectrum receiver

Details Channel estimation in a spread spectrum receiver Channel estimation in a spread spectrum receiver

2007-11-27

2007-11-27

Payne, David C. (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S143000, C375S150000, C375S142000

Reexamination Certificate

active

10243857

ABSTRACT:
A method and apparatus for channel estimation in a spread spectrum receiver include processing that begins by despreading a received spread spectrum complex baseband sample utilizing a pseudorandom spreading sequence to produce a despread baseband symbol. The processing continues by filtering the despread baseband symbol to attenuate adverse channel effects based on a channel response estimate to produce a filtered despread baseband symbol. The processing then continues by decoding the filtered despread baseband symbol to produce recaptured data. The processing continues by modulating the recaptured data to produce a remodulated symbol. The processing then continues by producing a reconstructed spread spectrum complex baseband sample from the remodulated symbol based on the pseudorandom spreading sequence. The processing then continues by generating the channel response estimate such that a convolution of the channel response estimate with the reconstructed spread spectrum complex baseband sample substantially emulates the received spread spectrum complex baseband sample.

REFERENCES:
patent: 5353307 (1994-10-01), Lester et al.
patent: 5692006 (1997-11-01), Ross
patent: 5822363 (1998-10-01), Le Roy
patent: 5960028 (1999-09-01), Okamoto et al.
patent: 6888812 (2005-05-01), Iwasaki
patent: 7031671 (2006-04-01), Mottier
patent: 2003/0078011 (2003-04-01), Cheng et al.
patent: 2005/0233710 (2005-10-01), Lakkis et al.
patent: 675606 (1995-10-01), None
patent: WO 0051260 (2000-08-01), None
Electronics Letters—Feb. 19, 1998, vol. 34 No. 4.

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