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:
Jun. 11, 2013
Filed:
Aug. 31, 2007
Albert Van Zelst, Woerden, NL;
Brian Wong, Pleasanton, CA (US);
D. J. Richard Van Nee, De Meern, NL;
Vincent K. Jones, Iv, Redwood City, CA (US);
Geert Arnout Awater, Utrecht, NL;
Albert van Zelst, Woerden, NL;
Brian Wong, Pleasanton, CA (US);
D. J. Richard van Nee, De Meern, NL;
Vincent K. Jones, IV, Redwood City, CA (US);
Geert Arnout Awater, Utrecht, NL;
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Systems and methodologies are described that provide low-complexity soft-output detection for MIMO communication systems. Looping can be performed over a set of constellation points per spatial stream to obtain distance metrics for each of a series of transmitted streams, for which values for the other transmitted streams can be estimated using a MIMO channel matrix and a sub-optimal MIMO algorithm. Examples of MIMO algorithms that can be utilized include Per-Stream List Detection (PSLD), Lattice-Reduced Detection (LRD), and a Guided-M Algorithm. Performance can be further improved by pre-processing the MIMO channel matrix and/or by utilizing techniques for Enhanced Metric Usage (EMU).