An Improved Iterative Water-Filling Algorithm for Multi-Cell Interference Mitigation in Downlink OFDMA Networks

Author

Venturino, Luca ; Prasad, Narayan ; Wang, Xiaodong

Author_Institution

Univ. degli Studi di Cassino, Cassino

fYear

2007

fDate

4-7 Nov. 2007

Firstpage

1718

Lastpage

1722

Abstract

We consider a downlink OFDMA cellular network wherein groups of coordinated access points can share user channel quality measurements and we address the problem of jointly selecting the set of co-channel users and the power allocation across tones in order to maximize the weighted system sum-rate subject to per-base-station power constraints. A novel improved iterative water-filling algorithm (I-IWF) is presented and numerical examples are provided to assess its performance.

Keywords

OFDM modulation; cellular radio; channel allocation; frequency division multiple access; iterative methods; radiofrequency interference; base-station power constraint; co-channel allocation; coordinated access point; downlink OFDMA cellular network; iterative water-filling algorithm; multi cell interference mitigation; power allocation; user channel quality measurement; Base stations; Coordinate measuring machines; Downlink; Electronic mail; Femtocell networks; Interference; Iterative algorithms; Land mobile radio cellular systems; Optimal scheduling; Power measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on

Conference_Location

Pacific Grove, CA

ISSN

1058-6393

Print_ISBN

978-1-4244-2109-1

Electronic_ISBN

1058-6393

Type

conf

DOI

10.1109/ACSSC.2007.4487526

Filename

4487526