D2D通信系统功率控制算法的研究与实现
首发时间:2019-06-12
摘要:为了缓解通信系统频谱资源紧张、容量十分有限的现状,将D2D技术引入蜂窝网络中。本篇文章简单介绍了D2D通信系统的工作原理,并以此为前提条件,在LTE上行链路中开环功率控制算法和闭环功率控制算法的基础上,对仿真平台进行建立,分析和研究了不同功率控制算法对D2D用户及蜂窝用户通信效果性能的改善。并在此基础之上加入了联合功率控制算法,通过建模仿真分析得到D2D用户和蜂窝用户之间的SINR分布情况、及整个小区内的吞吐量情况。经分析可得,功率控制算法可减少系统间干扰,提高系统吞吐量;并且经过对比可知,其中联合功率控制算法的效果更好性能更优。
关键词: LTE D2D 功率控制 开环功率控制 闭环功率控制
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Research and implementation of power control algorithm for D2D communication system
Abstract:In order to alleviate the shortage of spectrum resources and limited capacity of communication system, D2D technology is introduced into cellular network. In this paper, it briefly introduces the working principle of D2D communication system, the open-loop power control algorithm and closed-loop power control algorithm in LTE uplink. Through the establishment of the simulation platform, the improvement of communication effect performance of D2D users and cellular users by different power control algorithms is analyzed and studied. The SINR distribution between D2D users and cellular users and the throughput of the whole cell are obtained through modeling and simulation analysis. Through analysis, it can be concluded that the power control algorithm can reduce inter-system interference and improve system throughput. And the comparison shows that the combined power control algorithm has better effect and better performance.
Keywords: LTE D2D Power control Open loop power control;Closed loop power control
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