家庭网络联合子信道和功率分配算法的研究

Joint Subchannel and Power Allocation for Femtocells

为解决家庭网络跨层干扰和总体能量消耗的问题,提出一种上行资源分配方案—联合子信道和功率分配算法。在满足家庭用户吞吐量的要求下,限制对主基站的跨层干扰,最小化所有家庭用户的能量消耗。并将最小化能耗的问题表示为混合整数规划,引入时间分享因子降低计算复杂度,最终利用对偶分解方法解决优化能量消耗的问题,并通过仿真验证了其可行性。

Femtocell is facing the challenge of cross layer interference and consumption. In this paper, a joint power and subchannel allocation method is proposed in the uplink femtocell networks to minimize the energy consumption of all of femtocell users（FUEs）, subject to limiting the cross-tier interference caused to the macro-base stations（MBSs） by the FUEs, and satisfying the throughput of the FUEs. The problem is formulated as a mixed integer programming problem, and we introduce the time-sharing factor to reduce the complexity and use the dual decomposition approach to solve the problem. The results are verified by the simulations.