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1. US20110268015 - Resource allocation for orthogonal decode-and forward-input multiple-output relay channels with finite rate feedback

Office United States of America
Application Number 13138043
Application Date 09.12.2009
Publication Number 20110268015
Publication Date 03.11.2011
Grant Number 08693386
Grant Date 08.04.2014
Publication Kind B2
IPC
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
7
Radio transmission systems, i.e. using radiation field
14
Relay systems
H04B 7/14
CPC
H04B 1/3822
Applicants Xiao Jun
Thomson Licensing
Gao Wen
Inventors Xiao Jun
Gao Wen
Agents Shedd Robert D.
Lin Reitseng
Priority Data 61/142445 05.01.2009 US
Title
(EN) Resource allocation for orthogonal decode-and forward-input multiple-output relay channels with finite rate feedback
Abstract
(EN)

A near-optimal resource allocation method is provided for a Multiple-Input Multiple-Output (MIMO) relay scheme in which the source and relay nodes have only partial channel state information (CSI), obtained through finite rate feedback, and the powers of the source and relay nodes are constrained. Power on/off beamforming is employed at the source and relay nodes in which the receiving node feeds back the index of a beamforming matrix selected in accordance with the channel state. Using channel statistical information, the exemplary method allocates time between the first stage and the second stage of the relay transmission, and power between the source and the relay node. With only limited CSI feedback, the resource allocation method enjoys a considerable performance advantage over arrangements with no feedback.

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