Extended 2q-MUSIC algorithm for noncircular signals

被引：57

作者：

Liu, Jian ^{[1
]}

Huang, Zhitao ^{[2
]}

Zhou, Yiyu ^{[2
]}

机构：

[1] AF Engn Univ, Telecommun Engn Coll, Xian 710077, Peoples R China

[2] Natl Univ Defense Technol, Sch Elect Sci & Engn, Changsha 410073, Peoples R China

来源：

SIGNAL PROCESSING | 2008年 / 88卷 / 06期

关键词：

array signal processing; direction finding; aperture extension; cumulants; MUSIC;

D O I：

10.1016/j.sigpro.2007.11.012

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The NC-2q-MUSIC algorithm proposed in this paper is an extension of the 2q-MUSIC algorithm to the case of noncircular signals which are widely used in communication systems. The computational complexity of the NC-2q-MUSIC algorithm is analyzed in this paper and the NC-2q-MUSIC algorithm for uniform linear array (ULA), which, called NC-2q-MUSIC/ULA algorithm, needs much less computation, is also proposed. Due to the utilization of noncircular information of signals, the root mean square error (RMSE) performance of NC-2q-MUSIC algorithm is better than 2q-MUSIC algorithm for noncircular signals. And the NC-2q-MUSIC algorithm can handle more signals than 2q-MUSIC algorithm. It is proved that the robustness to modeling errors of NC-2q-MUSIC algorithm increases with q. Simulation results validate the better performance of NC-2q-MUSIC over 2q-MUSIC. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1327 / 1339

页数：13

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