Noise variance estimation

Details Noise variance estimation Noise variance estimation

2008-01-30

2011-11-08

Payne, David C. (Department: 2611)

Pulse or digital communications

Receivers

Reexamination Certificate

active

08054914

ABSTRACT:
A method and system for estimating noise variance. A method for noise variance estimation comprises receiving a first multi-sample symbol and receiving a second multi-sample symbol. The first multi-sample symbol is subtracted from the second multi-sample symbol to produce a set of noise samples. The set of noise samples is used to produce a noise variance estimate. The noise variance estimate is applied in various tasks (e.g. channel estimation, log-likelihood ratio computation, and/or minimum mean squared error equalization) to process data provided to a user.

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