Maximum likelihood detection for MIMO receivers

Details Maximum likelihood detection for MIMO receivers Maximum likelihood detection for MIMO receivers

2006-09-22

2009-06-02

Nguyen, Tony T (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Plural receivers

C455S226100, C455S101000, C455S562100, C375S267000

Reexamination Certificate

active

07542743

ABSTRACT:
Maximum likelihood detection of signals in a MIMO receiver. A system transformation is obtained by selecting a weighting matrix that when linearly transforming a channel utilized for wireless communication, results in a particular transformed triangular matrix. The weighting matrix is then used to provide a transformed vector for a received signal that allows a search in one constellation. In searching the constellation recursion values are used to calculate the Euclidean distances between set points of the constellation and the location on the constellation corresponding to the received signal for both bit values0and1. Minimum Euclidean distances are determined for bit values0and1and the difference of the minimum Euclidean distances is used to compute the maximum likelihood value for bits contained in the received signal.

REFERENCES:
patent: 7190734 (2007-03-01), Giannakis et al.
patent: 2004/0242179 (2004-12-01), Onggosanusi et al.
patent: 2006/0104390 (2006-05-01), Graef et al.
patent: 2006/0209977 (2006-09-01), Graef et al.
patent: 2006/0209994 (2006-09-01), Graef et al.

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