The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 10, 2012
Filed:
Feb. 04, 2009
Kazuhiko Fukawa, Tokyo, JP;
Hiroshi Suzuki, Tokyo, JP;
Satoshi Suyama, Tokyo, JP;
Ryota Yamada, Osaka, JP;
Naoki Okamoto, Osaka, JP;
Kazuhiko Fukawa, Tokyo, JP;
Hiroshi Suzuki, Tokyo, JP;
Satoshi Suyama, Tokyo, JP;
Ryota Yamada, Osaka, JP;
Naoki Okamoto, Osaka, JP;
Tokyo Institute of Technology, Tokyo, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
To obtain excellent reception performance while cutting down the amount of computing operation in a MIMO communication system using soft-decision error correction coding. Received waves picked up by receiving antennas-to-R are converted from the radio frequency to the baseband signal by respective receivers-to-R to be output as a received signal. A signal detectorcalculates bit LLRs of the transmitted signal based on the received signal and the channel-estimated values obtained from a channel estimator. The bit LLRs output from signal detectorare rearranged by deinterleaver units-to-T in the patterns opposite to the patterns in which interleaving was performed on the transmission side. The bit LLRs after de-interleaving are subjected to an error correction decoding process through decoders-to-T. The bit sequences after decoding are parallel-to-serial converted by a parallel-to-serial converterso that the detected transmission bit sequence is output.