基于TD-SCDMA无线定位虚拟线阵四阶累量修正MUSIC算法的研究  

Research on 4-order cumulant MUSIC Modified MUSIC Algorithm of Virtual Uniform Linear Array for Wireless Location Based on TD-SCDMA

作　　者：张毅[1] 罗元[1] 黄帮明 

机构地区：[1]重庆邮电大学,重庆400065 [2]中国移动通信集团设计院有限公司重庆分公司,400042

出　　处：《信号处理》2007年第6期951-954,共4页Journal of Signal Processing

基　　金：重庆市科委科研项目(cstc;2006BB3041);重庆市教委科研项目(KJ060518)

摘　　要：无线定位的圆-角定位技术中,DOA估计极其重要。本文针对基于TD-SCDMA智能天线预处理后的虚拟均匀线阵MUSIC算法带来的阵列孔径小,抗阵元误差扰动性差的不足,研究了基于模式空间虚拟均匀线阵四阶累量的MUSIC算法,由于虚拟线阵四阶累量MUSIC算法的应用范围局限于独立的信号源的DOA估计,不能用于相关信号源DOA估计,因而提出了基于模式空间虚拟均匀线阵四阶累量的修正MUSIC(FOC-MMUSIC)算法,有效地拓展了阵元孔径,改善了系统抗阵元误差扰动和算法对相关信号源DOA的估计性能。DOA estimation is very important in the circle - angle location based on smart antenna of TD-SCDMA. In the paper,In consideration of the small array aperture and poor robustness of the disturbed array errors for MUSIC algorithm based on the virtual uniform linear array in mode space, the 4-order cumulant MUSIC （ FOC-MUSIC ） algorithm based on the virtual uniform linear array in mode space are researched. , Considering that the 4-order cumulant MUSIC （FOC-MUSIC） algorithm for virtual uniform linear arrays in mode space can not be used to estimate DOA for correlated signals, then the 4-order cumulant modified MUSIC （FOC-MMUSIC） algorithm based on virtual uniform linear arrays in mode space is proposed. , the problem for DOA estmation of correlated signals has been resolved, and the performance of DOA estimation is impoved.

关 键 词：时分同步码分多址 多重信号分类算法 虚拟均匀线阵 四阶累量的修正MUSIC算法 

分 类 号：TN911.7[电子电信—通信与信息系统] TN929.533[电子电信—信息与通信工程]