基于公平性的多用户OFDM系统自适应功率分配松弛算法

Relaxation Algorithms for Adaptive Power Allocation in Multiuser OFDM Systems with Proportional Fairness Requirement

提出了两种多用户OFDM系统下行链路的自适应功率分配算法。通过进一步放松不同用户之间数据速率比例性要求,提出的新算法提高了功率使用效率。实验仿真表明:在降低计算复杂度的同时,大大提高了系统容量,并且也近似满足了不同用户之间数据速率比例性要求。

Two low complexity algorithms for adaptive power allocation in OFDM systems are proposed in this paper to achieve a higher capacity. Compared to existing adaptive resource allocation algorithms, the proposed schemes can use the power more efficiently through relaxing the proportional rate constraints and hence achieving a higher total capacity and acceptable fairness among users, while requiring significantly less computation.