Distributed power control algorithms in the uplink of wireless systems

被引：0
|
作者：
Martinez-Lopez, F. J. [1 ]
Campos-Delgado, D. U. [2 ]
Luna-Rivera, J. M. [2 ]
机构：
[1] UASLP, Fac Ingn, CIEP, San Luis Potosi, Mexico
[2] UASLP, Fac Ciencias, San Luis Potosi, Mexico
来源：
2007 4TH INTERNATIONAL CONFERENCE ON ELECTRICAL AND ELECTRONICS ENGINEERING | 2007年
关键词：
power control algorithms; CDMA systems; distributed control; dead-beat control;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this paper, the problem of power control in wireless systems using a distributed approach is analyzed. The uplink of a direct-sequence code-division multiple-access communication (DS-CDMA) system is studied in this work. The power control strategies are derived using classical design approaches (PID and Dead-Beat). It is concluded that the uplink channel variations do not destroy the stability of the feedback structures. However, the delays in the closed-loop paths can severely affect the stability and performance of the resulting feedback schemes. As a result, the control laws have to be selected according with the expected transmision delays in order to maximize the resulting performance. Simulation results are presented to compare the control algorithms using a standard single-step power correction approach.
引用
收藏
页码：218 / +
页数：2
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