Channel noise estimating method and apparatus applied to a...

Details Channel noise estimating method and apparatus applied to a... Channel noise estimating method and apparatus applied to a...

2008-05-06

2008-05-06

Odom, Curtis (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S136000, C375S144000, C375S148000, C375S346000, C375S347000, C375S348000, C375S349000, C375S350000

Reexamination Certificate

active

07369620

ABSTRACT:
A channel noise estimating method and apparatus applied to a multi-carrier system are disclosed, where data symbols received by a receiving unit are applied to reconstruct the original transmitted data symbols. The reconstructing process is performed by either a soft decision or a hard decision technique to simulate the original transmitted data symbols. These simulated transmitted data symbols in company with the received data symbols are further applied to calculate the channel noise based on an LMS algorithm.

REFERENCES:
patent: 5280284 (1994-01-01), Johler
patent: 5406569 (1995-04-01), Isozaki
patent: 6611513 (2003-08-01), ten Brink
patent: 2001/0044915 (2001-11-01), Vandersteen et al.
patent: 2002/0013164 (2002-01-01), Leifer et al.
patent: 2004/0052306 (2004-03-01), Ibrahim et al.
patent: 2005/0063493 (2005-03-01), Foster

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