Channel adaptive power control in the uplink of CDMA systems

被引：7
|
作者：
Choi, Seung-Ok [1 ]
You, Kwan-Ho [1 ]
机构：
[1] Sungkyunkwan Univ, Sch Informat & Commun Engn, Dept Elect Engn, Suwon 440746, South Korea
来源：
WIRELESS PERSONAL COMMUNICATIONS | 2008年 / 47卷 / 03期
关键词：
optimal power control; Kalman filter; CDMA; mobile communication; SIR;
D O I：
10.1007/s11277-008-9492-3
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
In this paper, we propose an adaptive power control algorithm using optimal control theory for CDMA cellular systems. With linear quadratic control, each mobile transmits to achieve a desired SIR under the fast varying environment of practical CDMA cellular systems. We apply Kalman filter theory to estimate a channel variation which is vulnerable to nonconstant link gain, mutual interference and uncertain noise. Through simulation comparison with DCPC algorithm, the suggested power control algorithm shows an increased uplink channel capacity.
引用
收藏
页码：441 / 448
页数：8
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