Robust multiple chain receiver

Details Robust multiple chain receiver Robust multiple chain receiver

2006-03-14

2006-03-14

Bocure, Tesfaldet (Department: 2631)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S347000

Reexamination Certificate

active

07012978

ABSTRACT:
The present invention provides a method and system for receiving a plurality of transmission signals at a receiver, the transmission signals each traveling through a corresponding transmission channel. The receiver includes a plurality of receiver channels, a receiver channel corresponding to each transmission channel. Each receiver channel receives a corresponding transmission signal. The received transmission signals are detected to determine whether the received transmission signals are dominated by noise or interference. If the received transmission signals are dominated by noise, then a first set of weights are selected as a receiver weighting. If the received transmission signals are dominated by interference, then a second set of weights are selected as the receiver weighting. The received transmission signals are estimated based upon the receiver weighting. Detecting whether the received transmission signals are dominated by noise or interference includes determining a level of correlation between the received transmission signals. Detecting whether the received transmission signals are dominated by noise or interference can be determined during a time slot of nulled transmission signals. If the transmission signals are multiple carrier signals, then detecting whether the received transmission signals are dominated by noise or interference can be determined during a frequency and time slot of a nulled carrier of the transmission signals. The first set of weights can be based upon a first covariance matrix, wherein the first covariance matrix represents received noise and interference covariance. The second set of weights can be based upon the second covariance matrix, wherein the second covariance matrix represents interference covariance. The first set of weights and the second set of weights can also be used for transmission mode selection and receiver soft decoding.

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patent: 6507605 (2003-01-01), Fukumoto et al.
patent: 6757241 (2004-06-01), Jones et al.
patent: 6888809 (2005-05-01), Foschini et al.
patent: 2001/0028677 (2001-10-01), Wang et al.
patent: 1 185 001 (2002-03-01), None
patent: WO 96/22662 (1996-07-01), None

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