Joint Subcarrier Pairing and Power Allocation in OFDMA Cooperative Relay Networks
作者： Songtao Guo , Jianji Hu , Chunrong He
关键词:
摘要: In this paper, we propose a joint subcarrier pairing and power allocation (JS2PA) scheme with fairness based on the Intelligent Water Drop (IWD) optimization method for Orthogonal Frequency Division Multiple Access (OFDMA) cooperative relay networks. The proposed consists of selection algorithm algorithm. We first formulate JS2PA problem as mixed integer programming aiming to maximize total network utility under constraints individual power, requirement pairing. To solve non-convex problem, firstly, Hungarian so select appropriate pairs relaying. Secondly, provide IWD (PA-MIWD) in which water drops act agents find optimal each node. Finally, conduct simulations validate algorithms results show that outperforms existing methods terms convergence utility.
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