Research Article
Improved reuse partitioning and power control for downlink multi-cell OFDMA systems
@INPROCEEDINGS{10.1145/1189186.1189188, author={Soumaya Hamouda and Sami Tabbane and Philippe Godlewski}, title={Improved reuse partitioning and power control for downlink multi-cell OFDMA systems}, proceedings={1st International ICST Workshop on Broadband Wireless Access for ubiquitous Networking}, publisher={ACM}, proceedings_a={BWAN}, year={2006}, month={9}, keywords={OFDMA; co-channel interference; subcarrier assignment; frequency reuse; multi-cell; power control}, doi={10.1145/1189186.1189188} }- Soumaya Hamouda
Sami Tabbane
Philippe Godlewski
Year: 2006
Improved reuse partitioning and power control for downlink multi-cell OFDMA systems
BWAN
ACM
DOI: 10.1145/1189186.1189188
Abstract
In this paper, we investigate resource management in downlink multi-cell Orthogonal Frequency Division Multiple Access (OFDMA) systems. An efficient and low-complexity subcarrier assignment algorithm as well as power control scheme are proposed to mitigate the co-channel interference (CCI) impact. Based on a new centralized reuse partitioning strategy, our approach aims to minimize the outage probability in the entire system. With this algorithm, adaptive frequency reuse factors are applied according to users' bandwidth requirement and the CCI level they undergo. Transmit power is then adjusted for further improvement of the system capacity and this without increasing the CCI level. Simulation results show that our approach is particularly efficient for services that demand high bit rates.