Signal decoding apparatus, signal decoding method, program,...

Details Signal decoding apparatus, signal decoding method, program,... Signal decoding apparatus, signal decoding method, program,...

2006-11-08

2010-06-01

Lugo, David B (Department: 2611)

Pulse or digital communications

Receivers

Interference or noise reduction

C375S267000

Reexamination Certificate

active

07729458

ABSTRACT:
Signal decoding apparatus, signal decoding method, program, and information record medium are provided and can accomplish not only high-speed and high-capacity communication, but high-accuracy decoding. An initial channel estimation section31estimates an initial channel with a pilot symbol added at the beginning of each packet. After a replica of a transmission symbol is generated, for a reception signal vector, CCI components for L transmission antennas are generated. A CCI canceller33removes the CCI components from the reception signal vector. After the reception symbol vector from which the CCI components had been removed has been obtained, a division device34obtains an instantaneous estimation value. An update condition determination section35detects deterioration of a channel response accuracy based on a threshold value. An instantaneous estimation value whose SNR has been determined to be insufficient is discarded. An averaging circuit36outputs a channel response estimation matrix at time t+1 obtained by an averaging process and supplies the matrix to a symbol decoding section13.

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patent: 2002-271293 (2002-09-01), None

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