MIMO equalization for wireless communication systems

Details MIMO equalization for wireless communication systems MIMO equalization for wireless communication systems

2008-03-06

2011-11-15

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S144000, C370S241000

Reexamination Certificate

active

08059734

ABSTRACT:
A method to equalize multiple-input multiple-output (MIMO) signals assigns a weight to the output of each receive chain in the MIMO system based on a first noise power value in each receive chain. A second noise power value can be computed using a difference between identical symbols from one or more weighted/un-weighted receive chain signals. Notably, the second noise power value includes thermal noise, phase noise, quantization noise, and distortion noise. The weighted outputs of the receive chains and the second noise power estimate may be used in an equalization calculation to recover the input signal.

REFERENCES:
patent: 7411547 (2008-08-01), van Rooyen et al.
patent: 7532660 (2009-05-01), Chae et al.
patent: 2004/0104844 (2004-06-01), Rooyen et al.
patent: 2004/0114506 (2004-06-01), Chang et al.
patent: 2005/0099937 (2005-05-01), Oh et al.
patent: 2006/0227909 (2006-10-01), Thomas et al.
patent: 2009/0046588 (2009-02-01), Matsumoto et al.

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