Enhanced channel parameter estimation in the presence of...

Details Enhanced channel parameter estimation in the presence of... Enhanced channel parameter estimation in the presence of...

2007-05-08

2007-05-08

Tse, Young T. (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S222000, C725S111000

Reexamination Certificate

active

10291055

ABSTRACT:
A communication device processes a preamble in the presence of impulse noise. The communication device receives a preamble sequence that includes a plurality of preamble symbols and determines that at least one preamble symbol of the plurality of preamble symbols has been adversely affected by impulse noise. Based upon this determination, the communication device masks the at least one preamble symbol of the plurality of preamble symbols to produce a subgroup of preamble symbols. Then, based upon the subgroup of preamble symbols, the communication device determines at least one of a frequency estimate for the subgroup of preamble symbols, a phase estimate for the subgroup of preamble symbols, and a gain estimate for the subgroup of preamble symbols. Based upon these estimates, the communication receiver corrects subgroup of preamble symbols and uses the result to perform channel estimation, to correct subsequently received symbols carrying data, etc., and performs additional operations based upon the corrected preamble symbols.

REFERENCES:
patent: 6175559 (2001-01-01), Brown
patent: 6791995 (2004-09-01), Azenkot et al.
patent: 7050419 (2006-05-01), Azenkot et al.
patent: 2003/0039203 (2003-02-01), Moon

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