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. 18, 2013
Filed:
Feb. 01, 2006
Bjorn Bjerke, Boston, MA (US);
Irina Medvedev, Somerville, MA (US);
John W. Ketchum, Harvard, MA (US);
Mark S. Wallace, Bedford, MA (US);
Jay Rodney Walton, Carlisle, MA (US);
Bjorn Bjerke, Boston, MA (US);
Irina Medvedev, Somerville, MA (US);
John W. Ketchum, Harvard, MA (US);
Mark S. Wallace, Bedford, MA (US);
Jay Rodney Walton, Carlisle, MA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Techniques for performing detection and decoding at a receiver are described. In one scheme, the receiver obtains R received symbol streams for M data streams transmitted by a transmitter, performs receiver spatial processing on the received symbols to obtain detected symbols, performs log-likelihood ratio (LLR) computation independently for each of D best data streams, and performs LLR computation jointly for the M−D remaining data streams, where M>D≧1 and M>1. The D best data streams may be selected based on SNR and/or other criteria. In another scheme, the receiver performs LLR computation independently for each of the D best data streams, performs LLR computation jointly for the M−D remaining data streams, and reduces the number of hypotheses to consider for the joint LLR computation by performing a search for candidate hypotheses using list sphere detection, Markov chain Monte Carlo, or some other search technique.