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:
Nov. 30, 2010
Filed:
Sep. 05, 2005
Noriyuki Maeda, Yokohama, JP;
Kenichi Higuchi, Yokohama, JP;
Hiroyuki Kawai, Yokosuka, JP;
Mamoru Sawahashi, Yokohama, JP;
Noriyuki Maeda, Yokohama, JP;
Kenichi Higuchi, Yokohama, JP;
Hiroyuki Kawai, Yokosuka, JP;
Mamoru Sawahashi, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Abstract
A signal detection apparatus improving signal detection accuracy in a receiver for communications system complying with the MIMO scheme. The signal detection apparatus detects transmission signals sent from transmission antennas based on received signals received by receiving antennas. The apparatus includes: a first determination mechanism for determining symbol candidates of the transmission signals in sequence based on the QRM-MLD method using the received signals arranged in first order; a second determination mechanism for determining symbol candidates of the transmission signals in sequence based on the QRM-MLD method using the received signals arranged in second order that is different from the first order; and an output mechanism for outputting symbol candidates and likelihood of the transmission signals based on determination results of at least the first and the second determination mechanisms.