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:
Jan. 30, 2018
Filed:
Dec. 05, 2012
Wireless, Inc., Greenbelt, MD (US);
Yu-Han Yang, San Diego, CA (US);
Beibei Wang, Bridgewater, NJ (US);
K. J. Ray Liu, Potomac, MD (US);
Origin Wireless, Inc., Greenbelt, MD (US);
Abstract
A transmitter receives channel impulse response signals derived from impulse signals sent from two or more receivers, each impulse signal being sent from one of the receivers to the transmitter through multiple propagation paths. Downlink waveforms for the two or more receivers are calculated in a way so as to increase a weighted sum-rate under a total power constraint, the downlink waveforms being determined based on time-reversed channel impulse response signals and initial virtual uplink power allocation coefficients. Updated virtual uplink power allocation coefficients are determined based on the downlink waveforms, and downlink power allocation coefficients are determined based on the downlink waveforms and the virtual uplink power allocation coefficients.