Data processing method, equalizer and receiver

Details Data processing method, equalizer and receiver Data processing method, equalizer and receiver

2004-03-25

2009-02-17

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S137000, C375S149000, C375S223000, C375S316000, C375S348000

Reexamination Certificate

active

07492844

ABSTRACT:
The invention is related to an equalizer comprising, for instance: means for creating a first covariance matrix and defining a Cholesky decomposition matrix of an inverse matrix of the first covariance matrix, means for removing selected covariance components from the Cholesky decomposition matrix, means for computing the inverse of a sub-matrix, which represents the common part of the first covariance matrix and a second covariance matrix, which includes covariance estimates of a second observation time, by using the aid of the Cholesky decomposition of the inverse matrix of the first covariance matrix, means for estimating interference from a received signal at a second observation time and determining additional covariance components on the basis of the estimation and means for creating the Cholesky decomposition of the inverse matrix of the second covariance matrix by using unitary rotations.

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Kimmo Kansanen, et al., “A Computationally Efficient MIMO Turbo-Equaliser”, IEEE Vehicular Technology Conference, 2003, Apr. 23-25, 2003, vol. 1, pp. 277-281.
Hiroo Omori, et al., “A Matched Filter Approximation for SC/MMSE Iterative Equalizers”, IEEE Vehicular Technology Conference, 2001, Oct. 7-11, 2001, vol. 3, pp. 1917-1921.
Mariella Sarestoniemi, et al., “Core Matrix Inversion Techniques for SC/MMSE MIMO Turbo Equalization”, IEEE Vehicular Technology Conference, 2004, May 17-19, 2004, vol. 1, pp. 394-398.

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