InterDigital Inc (IDCC)

[Gamco]

United States Patent 7,573,945
Tesfai , et al. August 11, 2009

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System and method for joint maximal ratio combining using time-domain based signal processing


Abstract
A spatial signal processing system and method are provided to optimize the received signal-to-noise ratio (SNR) at a first radio communication device based on the transmit filter at another radio communication device. Using an estimate of the channel derived from a signal received at one device from another device, an iterative process is provided to determine complex weights for one or more tapped delay-line transmit filters at each of two communication devices that optimize the received SNR.


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Inventors: Tesfai; Yohannes (Falls Church, VA), Vaidyanathan; Chandra (Bethesda, MD), Sugar; Gary L. (Rockville, MD)
Assignee: IPR Licensing, Inc. (Wilmington, DE)

Appl. No.: 10/707,588
Filed: December 23, 2003

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Related U.S. Patent Documents

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Application Number Filing Date Patent Number Issue Date
10064482 Jul., 2002 6873651
60380139 May., 2002
60361055 Mar., 2002


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Current U.S. Class: 375/267 ; 375/148; 375/219; 375/220; 375/229; 455/114.2; 455/114.3; 455/501; 455/63.1
Current International Class: H04B 7/02 (20060101)
Field of Search: 375/299,347,144,260,267,146-147,148,219-220,229,295 455/101,127.1,137,269,334,63.1,114.2,114.3,501 708/322 370/312