摘要
DS-CDMA系统中,智能天线方向图的形成必须依赖于对移动台的到达方向估计.为精确估计来波方向,首先分析研究了适用于DS-CDMA系统的DOA估计的传统算法:MUSIC算法和ESPRIT算法.这两种算法基于子空间分解,运算量大,不易于实时实现.提出使用两种基于MUSIC算法和ESPRIT算法的改进算法进行DOA估计,计算量大大降低.通过模拟实验证明,在CDMA系统多径信号环境下,两种改进算法易于实时实现.
In DS_ CDMA system, the producing of the direction plot of intelligent antennas depends on the DOA estimation for the mobile. In this paper, first of all, the traditional MUSIC and ESPRIT algorithms are studied, which is based on the decomposition of subspaces, and with a large computation quantities. And then the improved DOA algorithms are expatiated and the performance of these algorithms is analyzed. Simulations show that the improv algorithms can be realized in real time.
出处
《郑州大学学报（工学版）》
CAS
2006年第1期63-66,共4页
Journal of Zhengzhou University（Engineering Science）
基金
河南省杰出人才创新基金资助项目(0421000100)
