A new adaptive beamforming using pilot and traffic channel

被引：0

作者：

Lim, SH ^{[1
]}

Lee, J ^{[1
]}

机构：

[1] Hyundai Syscomm Inc, Kyunggido 467701, South Korea

来源：

13TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOL 1-5, PROCEEDINGS: SAILING THE WAVES OF THE WIRELESS OCEANS | 2002年

关键词：

smart antenna; adaptive beamforming; cdma2000;

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：

We propose a new adaptive beamforming algorithm using the pilot and traffic channel in mobile communication systems. This algorithm updates the weight vector by applying the constant modulus algorithm to traffic channel and the least mean square algorithm to pilot channel The performance of adaptive beamforming algorithm using pilot channel that is suitable for the cdma2000 reverse link is evaluated in [1]. It updates the weight vector by the complex normalized least mean square algorithm through the pilot channel and applies the weight vector to the traffic channel with the traffic symbol rate. However, it is degraded by the channel estimation error according the change of pilot to traffic power ratio especially in fading channel. Also, since it utilizes only the pilot channel information for weight vector calculation, the information obtained through the traffic channel is discarded. Therefore, we propose a new algorithm using the pilot and traffic channel, which calculates the weight vector more precisely. In addition, the proposed beamforming algorithm has a robust characteristic against channel estimation error.

引用

页码：1507 / 1511

页数：5