Bounds and performance of reuse partitioning in cellular networks
INFOCOM'96 Proceedings of the Fifteenth annual joint conference of the IEEE computer and communications societies conference on The conference on computer communications - Volume 1
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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.