United States Patent 7,583,722
Pan , et al. September 1, 2009
--------------------------------------------------------------------------------
Scaling using gain factors for use in data detection
Abstract
Data is estimated from a received vector comprising a plurality of communications. A received wireless signal is converted to a baseband signal, which is sampled to produce a received vector. Channel responses are estimated for the received communications. The noise variance is estimated. The noise variance is scaled by a scaling factor. Samples are processed using the estimated channel responses and the scaled noise variance to produce a spread data vector. The spread data vector is despread to recover the data of the received wireless signal.
--------------------------------------------------------------------------------
Inventors: Pan; Jung-Lin (Selden, NY), Kim; Younglok (Seoul, KR), Grieco; Donald M. (Manhassett, NY)
Assignee: InterDigital Technology Corporation (Wilmington, DE)
Appl. No.: 11/962,371
Filed: December 21, 2007
--------------------------------------------------------------------------------
Related U.S. Patent Documents
--------------------------------------------------------------------------------
Application Number Filing Date Patent Number Issue Date
11408411 Dec., 2007 7313172
11175662 May., 2006 7042929
10327299 Aug., 2005 6928104
60396823 Jul., 2002
--------------------------------------------------------------------------------
Current U.S. Class: 375/148 ; 375/340; 375/350
Current International Class: H04B 1/707 (20060101); H04B 1/10 (20060101); H04L 27/04 (20060101)
Field of Search: 375/143,144,148,152,340,350 455/63.1
