Title :
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
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;
Conference_Titel :
Signals, Systems and Computers, 2007. ACSSC 2007. Conference Record of the Forty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
978-1-4244-2109-1
Electronic_ISBN :
1058-6393
DOI :
10.1109/ACSSC.2007.4487526
