User-aided sub-clustering for CoMP transmission: Feedback overhead vs. data rate trade-off

Author

Thiele, Lothar ; Kurras, Martin ; Borner, Kai ; Haustein, Thomas

Author_Institution

Fraunhofer Heinrich Hertz Inst., Berlin, Germany

fYear

2012

fDate

4-7 Nov. 2012

Firstpage

1142

Lastpage

1146

Abstract

The need for cell densification leads to inter-cell interference mitigation techniques known as coordinated multi-point (CoMP) transmission and reception. This work focuses on the Long Term Evolution - Advanced (LTE-A) frequency division duplex (FDD) downlink. In order to group active users for clustered zero-forcing (ZF) beamforming, we will introduce a greedy user scheduling method using a projection-based rate approximation metric. The clusters are defined in a network-centric fashion, where users are allowed to provide channel feedback for the whole cluster or a sub-set only.

Keywords

Long Term Evolution; approximation theory; feedback; frequency division multiplexing; interference suppression; radio links; scheduling; wireless channels; CoMP reception; CoMP transmission; LTE-A FDD downlink; LTE-A frequency division duplex downlink; ZF beamforming clustering; cell densification; channel feedback; coordinated multipoint transmission; data rate trade-off; feedback overhead; greedy user scheduling method; group active users; intercell interference mitigation techniques; long term evolution-advanced frequency division duplex downlink; network-centric fashion; projection-based rate approximation metric; user-aided subclustering; zero-forcing beamforming clustering;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers (ASILOMAR), 2012 Conference Record of the Forty Sixth Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

978-1-4673-5050-1

Type

conf

DOI

10.1109/ACSSC.2012.6489199

Filename

6489199