Pulse or digital communications – Receivers
Reexamination Certificate
2011-08-09
2011-08-09
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Receivers
C375S340000, C375S262000
Reexamination Certificate
active
07995677
ABSTRACT:
An apparatus and method for detecting a signal in a receiver by maximum likelihood (ML) are provided, in which symbols are detected according to the number of transmit antennas of a transmitter and a modulation scheme, channels are estimated, an equivalent channel matrix corresponding to the estimated channels is determined, a permuted equivalent channel matrix is determined by multiplying the equivalent channel matrix by a predetermined permutation matrix, the permuted equivalent channel matrix is QR decomposed, a hard decision is performed on predetermined symbols among the detected symbols using a received signal resulting from the QR decomposition, and the log likelihood ratios (LLRs) of the hard-decided symbols are determined.
REFERENCES:
patent: 7292661 (2007-11-01), Chan et al.
patent: 2004/0001538 (2004-01-01), Garrett
patent: 2007/0127589 (2007-06-01), Hwang et al.
patent: 2008/0049862 (2008-02-01), Dean et al.
patent: 10-2007-0052037 (2007-05-01), None
patent: WO 2005/057838 (2005-06-01), None
Choi Soong-Yoon
Hwang Sung-Soo
Jung Sung-Yoon
Kim Hyoun-Kuk
Kwon Young-Hoon
Bayard Emmanuel
Information and Communications University, Research and Industri
Samsung Electronics Co,. Ltd.
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