J4 ›› 2010, Vol. 27 ›› Issue (6): 749-753.

• 光通信 • 上一篇    下一篇

多业务无线网络中基于最佳等信干比的功率控制

周元元 程莹 范程华   

  1. 合肥师范学院物理与电子工程系,安徽 合肥,230061
  • 收稿日期:2009-12-24 修回日期:2010-03-06 出版日期:2010-11-28 发布日期:2010-11-19
  • 通讯作者: 周元元(1983—),安徽当涂人,硕士,教师,研究方向为无线通信、通信信号处理等。

Power Control Based on Best Equal SIR in Heterogeneous Wireless Data networks

ZHOU Yuan-yuan, CHENG Ying, FAN Cheng-hua   

  1. Department of Physics and Electronic Engineering, Hefei Nomal University, Hefei 230061, China
  • Received:2009-12-24 Revised:2010-03-06 Published:2010-11-28 Online:2010-11-19

摘要:

功率控制技术是无线网络的关键技术之一。为改进多业务无线网络中基于非合作博弈的功率控制算法中纳什均衡的帕累托有效性,引入数据终端的最佳等信干比概念,使得系统中所有数据终端都工作在最佳的等信干比下,语音终端工作在语音通信服务质量门限的目标信干比门限之下。推导出一个新的分布式基于最佳等信干比的功率控制算法。仿真表明,该算法明显提高了系统的服务质量,系统中终端均具有相对较高的效用和较低的发射功率,还使得无线网络资源的使用更加合理和公平。

关键词: 无线网络, 功率控制, 最佳等信干比, 效用

Abstract:

Power control is one of the key techniques in wireless networks. In order to improve Pareto efficiency of the algorithm of noncooperative power control game in heterogeneous wireless networks (HNPG), the idea of the Best Equal SIR(BES) of all data terminals is introduced, make sure all data terminals work on the best equal SIR, all voice terminals work on the target SIR of the Qos(Quality of Service) threshold; a new distributed algorithm based on Best Equal SIR in heterogeneous wireless network(HBES) is presented. Numerical results suggest that the algorithm can improve the capability of the system; terminals have higher utility and lower transmit power relatively, making terminals use wireless resources more rational and impartial.

Key words: wireless networks, power control, best equal SIR, utility