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:
Oct. 18, 2011
Filed:
Jul. 09, 2009
John W. Ketchum, Harvard, MA (US);
Steven J. Howard, Ashland, MA (US);
Jay Rod Walton, Westford, MA (US);
Mark S. Wallace, Bedford, MA (US);
Fuyun Ling, Beijing, CN;
John W. Ketchum, Harvard, MA (US);
Steven J. Howard, Ashland, MA (US);
Jay Rod Walton, Westford, MA (US);
Mark S. Wallace, Bedford, MA (US);
Fuyun Ling, Beijing, CN;
QUALCOMM, Incorporated, San Diego, CA (US);
Abstract
Techniques to process data for transmission over a set of transmission channels selected from among all available transmission channels. In an aspect, the data processing includes coding data based on a common coding and modulation scheme to provide modulation symbols and pre-weighting the modulation symbols for each selected channel based on the channel's characteristics. The pre-weighting may be achieved by 'inverting' the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, 'bad' channels are not used, and the total available transmit power is distributed across only “good” channels. Improved performance is achieved due to the combined benefits of using only the NS best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.