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
Computationally efficient bandwidth allocation and power control for OFDMA
IEEE Transactions on Wireless Communications
Broadband wireless access solutions based on OFDM access in IEEE 802.16
IEEE Communications Magazine
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
| Hi-index | 0.00 |
In this paper, we investigate subcarrier assignment in downlink multi-cell Orthogonal Frequency Division Multiple Access (OFDMA) systems. As user bit rates are in continuous increase, the limitation of the available spectrum requires more and more efficient subcarrier assignment schemes. Assigning subcarriers is especially expensive in terms of bandwidth for users undergoing severe Co-Channel Interference (CCI) as they demand high bandwidths. In our study, we mitigate the interference impact with a particular frequency reuse partitioning strategy. We propose a new centralized and low-complexity algorithm that minimizes the outage probability in the entire system. With this algorithm, adaptive frequency reuse factors are applied according to users' bandwidth requirement. Simulation results show that our approach is particularly efficient for services that demand high bit rates.