Group LMMSE demodulation using noise and interference...

Details Group LMMSE demodulation using noise and interference... Group LMMSE demodulation using noise and interference...

2008-03-13

2011-10-11

Nguyen, Tuan H (Department: 2618)

Telecommunications

Transmitter and receiver at separate stations

Distortion, noise, or other interference prevention,...

C455S074000, C375S259000, C375S265000

Reexamination Certificate

active

08036601

ABSTRACT:
A method for filtering in a wireless downlink channel, where all dominant transmitting sources use inner codes from a particular set, includes the steps of estimating a channel matrix seen from a desired transmitter source in response to a pilot or preamble signal; converting the estimated channel matrix into an effective channel matrix responsive to the inner code of the desired transmitting source; estimating a covariance matrix of noise plus interference in a linear model whose output is an equivalent of the received observations and in which the effective channel matrix corresponding to each dominant transmitting source inherits the structure of its inner code; computing a signal-to-noise-interference-ratio SINR responsive to the covariance matrix and the effective channel matrix corresponding to the desired source; and feeding back the computed SINR to the transmitter source.

REFERENCES:
patent: 7254192 (2007-08-01), Onggosanusi et al.
patent: 2004/0167843 (2004-08-01), French
patent: 2008/0212539 (2008-09-01), Bottomley et al.

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