应用科学学报 ›› 2019, Vol. 37 ›› Issue (1): 1-11.doi: 10.3969/j.issn.0255-8297.2019.01.001

• 通信工程 • 上一篇    下一篇

基于补偿因子的D2D通信自适应联合功率控制算法

翟旭平1,2,3, 龚磊1,2,3, 张男1,2,3   

  1. 1. 上海大学 特种光纤与光接入网重点实验室, 上海 200444;
    2. 上海大学 特种光纤与先进通信国际合作联合实验室, 上海 200444;
    3. 上海大学 上海先进通信与数据科学研究院, 上海 200444
  • 收稿日期:2017-10-25 修回日期:2018-03-21 出版日期:2019-01-31 发布日期:2019-01-31
  • 作者简介:翟旭平,副教授,研究方向:宽带无线通信、认知无线电系统等,E-mail:zhaixp@shu.edu.cn
  • 基金资助:

    国家自然科学基金(No.61171085,No.61401266)资助

Adaptive Joint Power Control Algorithm Based on Compensation Factor for Device-to-Device Communication

ZHAI Xu-ping1,2,3, GONG Lei1,2,3, ZHANG Nan1,2,3   

  1. 1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200444, China;
    2. Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai 200444, China;
    3. Shanghai Institute for Advanced Communication and Data Science, Shanghai University, Shanghai 200444, China
  • Received:2017-10-25 Revised:2018-03-21 Online:2019-01-31 Published:2019-01-31

摘要:

针对融合设备到设备(device to device,D2D)通信的蜂窝系统中路径损耗补偿因子单一、功率控制性能不佳等问题,提出一种自适应联合功率控制算法.根据D2D用户到基站及蜂窝用户的距离计算出路径损耗补偿因子增补量,得出D2D用户及蜂窝用户的路径损耗补偿因子矩阵,提升功率控制性能;同时采用联合闭环功率控制方式进一步降低D2D用户及蜂窝用户的同频干扰.实验仿真表明:相比于传统功率控制算法,该算法对系统的信干噪比(signal to interference plus noise ratio,SINR)有较好的提升作用,且吞吐量在1 000kbit/s以上的用户数量是传统功率控制算法的1.7倍.

关键词: 蜂窝系统, 设备到设备, 功率控制, 路径损耗补偿因子, 同频干扰

Abstract:

An adaptive joint power control algorithm is proposed to improve the path loss compensation factor and the performance of power control in the cellular system incorporating device to device(D2D)communications. The added amount of the path loss compensation factor could be calculated according to the distance between D2D users to base station and cellular users, then the path loss compensation factor matrix of D2D users and cellular users could be used to improve the performance of power control. In order to improve the co-channel interference furtherly, a joint closed loop power control mode is adopted for D2D users and cellular users. Compared with traditional power control algorithms, simulation results show that the signal to interference plus noise ratio (SINR) of the system could be improved better by the proposed algorithm, and the number of users of the proposed algorithm whose throughput is more than 1000 kbit/s is 1.7 times of the traditional power control algorithm.

Key words: device to device (D2D), cellular system, cochannel interference, power control, path loss compensation factor

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