一种基于实值化技术的循环平稳DOA算法  

Cyclic DOA Estimation Algorithm with Real-valued Eigendecomposition

作　　者：刘志刚[1] 汪晋宽[1] 薛延波[1] 

机构地区：[1]东北大学信息科学与工程学院,沈阳110004

出　　处：《控制与决策》2006年第8期945-947,952,共4页Control and Decision

基　　金：河北省教育厅科学研究指导计划项目(Z2004103)

摘　　要：针对EC-MU S IC算法的高维复矩阵计算量大、硬件实现成本高等缺点,提出一种基于实值化技术的循环平稳DOA算法.重新构造了具有中心厄尔米特性质的高维矩阵,将复数矩阵映射成实数矩阵进行处理,不仅具有信号选择特性,提高了算法性能,而且降低了算法的计算量,有利于算法实用化和通信产品小型化.仿真结果验证了所提出算法的有效性.A modified extended cyclic MUSIC（EC-MUSIC） algorithm based on real-valued decomposing technique is presented to reduce the computational complexity and high hardware cost. A high-dimensional matrix with centerhermitian property is constructed, which maps a complex matrix into a real one. The proposed algorithm has the signal-selective property, improves its performance, and achieves a substantial reduction of the computational complexity. This algorithm is applicable to communication products with minitype. The effectiveness of this method is verified by simulation results with different SNRs.

关 键 词：DOA估计 循环平稳 阵列信号处理 移动通信 

分 类 号：TN911.7[电子电信—通信与信息系统]