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:
Jul. 23, 2013
Filed:
May. 04, 2009
Yingqun Yu, San Diego, CA (US);
Wenjun LI, San Diego, CA (US);
Ferrokh Abrishamkar, San Diego, CA (US);
Prashant Udupa Sripathi, San Jose, CA (US);
Yingqun Yu, San Diego, CA (US);
Wenjun Li, San Diego, CA (US);
Ferrokh Abrishamkar, San Diego, CA (US);
Prashant Udupa Sripathi, San Jose, CA (US);
Qualcomm Incorporated, San Diego, CA (US);
Abstract
Methods and systems for multi-user detection in the presence of multiple spreading factors are provided. In one aspect of the disclosure, an apparatus is provided. The apparatus comprises an interference computation unit configured to compute a combined interference based on detected user symbols for a first spreading factor and detected user symbols for a second spreading factor, wherein the combined interference accounts for multi-user interference from user symbols for the first and second spreading factors. The apparatus further comprises an interference cancellation unit configured to remove the computed combined interference from a plurality of received symbols corresponding to the first spreading factor and a redetection unit configured to redetect the user symbols for the first spreading factor from the plurality of received symbols with the computed combined interference removed.