Pulse or digital communications – Systems using alternating or pulsating current – Angle modulation
Reexamination Certificate
2005-12-15
2010-11-16
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Angle modulation
Reexamination Certificate
active
07835460
ABSTRACT:
Apparatus and methods for use in a wireless communication system are disclosed for reducing channel estimation noise in a device such as a wireless transceiver. A disclosed apparatus includes a processor that determines a channel activity portion and a noise portion of a channel estimation. The processor also determines a threshold noise level based on channel estimate values in the noise portion of the channel estimation. The processor compares channel estimate energy values in the channel estimation to the threshold noise level and sets each of the channel estimate energy values being less than the threshold noise level to a predetermined value such as zero in order to reduce or eliminate the noise. Similar methods are also disclosed.
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International Search Report and Written Opinion - PCT/US06/060238 - International Search Authority, European Patent Office - Mar. 14, 2007.
Joseph Jaison
Joyce, III Gerald P.
Liu Shuwang
Minhas Sandip S.
QUALCOMM Incorporated
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