现代电子技术Issue(19)：91-93,3.
自适应算法在DSSS信号分集接收中的应用
Application of adaptive algorithm in DSSS signal diversity reception
罗小宝 1盛文钦 1刘林涛1
作者信息
- 1. 武汉船舶通信研究所，湖北 武汉 430079
- 折叠
摘要
Abstract
Since diversity reception technology can obtain diversity gain,and improve the reception quality of multi⁃path signal,it has been widely used in direct sequence spread spectrum(DSSS)system. The general combining methods of signal di⁃versity include selective combining(SC),equal gain combining(EGC)and maximal ratio combining(MRC)mainly. The MRC method has the best effect,and it is necessary to calculate SNR of each path signal precisely. The problem of calculation accurate SNR was solved by using adaptive algorithm effectively. The method of combining RLS adaptive algorithm with multi⁃path signal diversity reception is presented. The received multi⁃path signal is separated into different delayed signals by the method,then the weighting coefficient of each path signal is calculated according to the minimum variance criterion by using RLS adaptive algorithm, and the maximum diversity gain is obtained by updating the weighting coefficient. The performances of different signal combining ways under multi⁃path channels were simulated and compared,and it shows that the signal combining way of adopting RLS adap⁃tive algorithm gets the best performance.关键词
直接序列扩频/最大比合并/分集接收/RLSKey words
DSSS/maximal ration combining/diversity reception/RLS分类
信息技术与安全科学引用本文复制引用
罗小宝,盛文钦,刘林涛..自适应算法在DSSS信号分集接收中的应用[J].现代电子技术,2015,(19):91-93,3.
