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:
May. 27, 2014
Filed:
Jul. 15, 2011
Kai Shi, Sunnyvale, CA (US);
Felix Bitterli, San Jose, CA (US);
Richard Mosko, Santa Clara, CA (US);
Tao-fei Samuel NG, Fremont, CA (US);
Kai Shi, Sunnyvale, CA (US);
Felix Bitterli, San Jose, CA (US);
Richard Mosko, Santa Clara, CA (US);
Tao-Fei Samuel Ng, Fremont, CA (US);
Qualcomm Atheros, Inc., San Jose, CA (US);
Abstract
This disclosure is directed to wireless or wired multiple-input multiple-output communication systems, in which a transmit symbol vector and a set of soft decision metrics are estimated using a reduced complexity maximum likelihood (ML) detection method based on a receive symbol vector and a QR decomposition of a set of permuted channel matrices. The QR decomposition can be performed by a series of CORDIC operations. Preferably, the modified receive vector and upper triangular matrix streams are scaled by a weighting vector to help compensate for transmit and receive side noise. Also preferably, the soft decision metric set related to the reliability of transmitted bits is normalized.