摘要：

针对频谱资源短缺的问题,提出一种保证宏蜂窝用户服务质量的功率控制算法。根据建立的功率优化模型,通过3种不同方式对非凸目标函数进行凸优化估计处理,将其转换为若干凸子问题并迭代近似,从而得到原非凸目标函数的解。仿真结果表明,该算法经过数次迭代后,能 收敛到原优化问题的解,提高系统吞吐量。

关键词: 频谱资源, 异构网络, 功率控制, 凸优化, 吞吐量

Abstract:

To solve the problem of shortage of spectrum resources,a power control algorithm is proposed under the condition that the Quality of Service(QoS) of Macro-cellular User Equipment(MUE) is satisfied.It approximates the nonconvex objective function in three different approaches,and converts the problem into a series of convex subproblems,then solves the subproblems iteratively and the solution of the original nonconvex objective function is obtained finally.Simulation results show that after several iterations,the proposed algorithm can effectively obtain the solution of the original optimization problem and improve the system throughput.

Key words: spectrum resource, heterogeneous network, power control, convex optimization, throughput

中图分类号: 

• TP393