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:
Feb. 04, 2014
Filed:
Jul. 31, 2008
Fan Wang, Chicago, IL (US);
Stanley J. Benes, Round Lake Beach, IL (US);
Amitabha Ghosh, Buffalo Grove, IL (US);
Chandrasekar Sankaran, Arlington Heights, IL (US);
Timothy J. Wilson, Rolling Meadows, IL (US);
Fei Tong, Swindon, GB;
Nick W. Whinnett, Marlborough, GB;
Fan Wang, Chicago, IL (US);
Stanley J. Benes, Round Lake Beach, IL (US);
Amitabha Ghosh, Buffalo Grove, IL (US);
Chandrasekar Sankaran, Arlington Heights, IL (US);
Timothy J. Wilson, Rolling Meadows, IL (US);
Fei Tong, Swindon, GB;
Nick W. Whinnett, Marlborough, GB;
Motorola Mobility LLC, Libertyville, IL (US);
Abstract
A method, system and communication network for transmitting information signals via uplink (UL) collaborative SDMA, in a wireless communication system. Base station receiver estimates a channel gain associated with the transmission path(s) of each user and keeps a matrix of normalized covariance, between users. Based on the estimated channel gain and the normalized covariance, ULS utility is able to compute channel capacity. Based on capacity estimates of (1) the multiplexed user signals and (2) the individual user signals, signals are either multiplexed for UL SDMA or are transmitted individually. An optimal selection of multiplexed signals may be based upon: (1) a cross user interface measurement; and (2) a selection mechanism based on eigen-decomposition techniques. The ULS utility enables a UL scheduler to pair information signals with clear spatial distinction and minimal correlation, based on capacity evaluations.