Research Article
Resource Allocation for OFDMA Amplify-Forward Relay System
@INPROCEEDINGS{10.4108/icst.chinacom.2014.256353, author={Xudong Yin and Jianli Huang and Jiayin Qin}, title={Resource Allocation for OFDMA Amplify-Forward Relay System}, proceedings={9th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2015}, month={1}, keywords={subcarrier allocation relay selection orthogonal frequency division multiple access (ofdma) quality of service(qos) fairness bipartite graph}, doi={10.4108/icst.chinacom.2014.256353} }- Xudong Yin
Jianli Huang
Jiayin Qin
Year: 2015
Resource Allocation for OFDMA Amplify-Forward Relay System
CHINACOM
IEEE
DOI: 10.4108/icst.chinacom.2014.256353
Abstract
This paper studies the resource allocation for orthogonal frequency division multiple access (OFDMA) relay system with a single source node, multiple relay nodes, and multiple destination nodes. Joint subcarrier allocation and relay selection problem with different quality of service (QoS) requirements on destination nodes is transformed to the maximum weight matching problem in a bipartite graph. The Kuhn- Munkres algorithm can used to find the optimal solution, but it has a high complexity. Therefore, a low complexity suboptimal algorithm is proposed. When adding fairness constraint on relay nodes, we also proposed a suboptimal algorithm. Simulation results show the proposed algorithms achieve near optimal performance with low complexity.