智能天线中的干扰抑制算法研究  

An Interference-Depressing Algorithm for Smart Antennas

作　　者：段丽[1] 薛永毅[1] 胡智娟[1] 

机构地区：[1]北京联合大学信息学院,北京100101

出　　处：《计算机仿真》2008年第10期125-127,共3页Computer Simulation

基　　金：北京市教委科技发展计划项目(KM200611417011)

摘　　要：智能天线技术是是第三代移动通信系统采用的抗干扰关键技术。智能天线技术研究的核心是波束赋型的算法,但各种算法均存在计算量大和收敛速度较慢等缺点,如何提高系统性能成为一个重要课题。提出了一种新的用于智能天线中抑制干扰的波束形成算法,阐述了阵列天线波束形成的最佳权向量技术和估计信号波达方向的改进MUSIC算法,并对其进行了仿真实验。理论分析及仿真结果表明,与目前其它方法相比,具有空间分辨力高、计算量小、稳健性好等优点,有较强的实用性。Smart antenna array is the anti - interference key technology of 3G mobile communication system. The core of smart antenna research is the arithmetic of beaming. But some of the arithmetics have the problem of needing lots of data, high computational complexity and slow speed of convergence. How to improve the arithmetic for improving performance is one of the most important research points. A new beamforming algorithm used in smart antennas, which can greatly depress the interference, is proposed in this paper. The improved MUSIC algorithm is presented and simulated. Compared with other methods, it has higher spatial resolution and less calculation quantity, and is steady and more practical.

关 键 词：智能天线 波达方向 波束形成 最佳权向量 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]