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:
Apr. 19, 2016
Filed:
Aug. 18, 2005
Fuyun Ling, San Diego, CA (US);
Nagabhushana T. Sindhushayana, San Diego, CA (US);
Jay R. Walton, Westford, MA (US);
Mark Wallace, Bedford, MA (US);
Ivan Fernandez, San Diego, CA (US);
Fuyun Ling, San Diego, CA (US);
Nagabhushana T. Sindhushayana, San Diego, CA (US);
Jay R. Walton, Westford, MA (US);
Mark Wallace, Bedford, MA (US);
Ivan Fernandez, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Coding techniques for a (e.g., OFDM) communication system capable of transmitting data on a number of 'transmission channels' at different information bit rates based on the channels' achieved SNR. A base code is used in combination with common or variable puncturing to achieve different coding rates required by the transmission channels. The data (i.e., information bits) for a data transmission is encoded with the base code, and the coded bits for each channel (or group of channels with the similar transmission capabilities) are punctured to achieve the required coding rate. The coded bits may be interleaved (e.g., to combat fading and remove correlation between coded bits in each modulation symbol) prior to puncturing. The unpunctured coded bits are grouped into non-binary symbols and mapped to modulation symbols (e.g., using Gray mapping). The modulation symbol may be 'pre-conditioned' and prior to transmission.