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:
Nov. 30, 2010
Filed:
Feb. 12, 2007
Wei LI, JiangSu Province, CN;
Haifeng Wang, Oulu, FI;
Jorma Lilleberg, Oulu, FI;
Ming Chen, JiangSu Province, CN;
Shixin Cheng, JiangSu Province, CN;
Wei Li, JiangSu Province, CN;
Haifeng Wang, Oulu, FI;
Jorma Lilleberg, Oulu, FI;
Ming Chen, JiangSu Province, CN;
Shixin Cheng, JiangSu Province, CN;
Nokia Corporation, Espoo, FI;
Abstract
A QRD-M decomposition includes a first and a sequential second stage, at least. In the first stage, M branches are selected from among more than M branches entering the first stage as survive branches from which multiple decompositions are calculated. In the second stage, more than M branches are selected from among those branches entering the second stage as survive branches from which multiple decompositions are calculated. The symbol of the received signal is decided from a branch that is a survive branch of both the first and second stages. The second stage may be within a window that may include additional stages at which the pruning decision down to M survive branches is delayed. One or more windows may be used in a single QRD-M decomposition. In an embodiment, all branches entering the second stage are survive branches. It is shown that the marginal increased computational load increases accuracy.