Pulse or digital communications – Receivers – Interference or noise reduction
Reexamination Certificate
2007-07-03
2007-07-03
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Receivers
Interference or noise reduction
C375S229000
Reexamination Certificate
active
10227661
ABSTRACT:
An impulse response is estimated for a channel by estimating an intermediate impulse response of the channel. The intermediate impulse response comprises at least one multipath spike and one or more non-deterministic noise components at locations throughout the channel. Then, a threshold function is applied to the estimated intermediate impulse response across at least a portion of the channel in order to provide an estimated final impulse response of the channel. The threshold function has the effect of nulling the noise components of the channel having values less than the threshold function at the location within the channel of the respective noise component, and the threshold function is characterized by a level that varies across the portion of the channel from a minimum value to a maximum value in a manner determined by the location of the at least one multipath spike within the channel.
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Fimoff Mark
Nerayanuru Sreenivasa M.
Pladdy Christopher J.
Aghdam Freshteh N
Fan Chieh M.
Zenith Electronics Corporation
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