摘要
针对传统DOA估计方法存在分辨率低,且现有多重信号分类算法不适用于TD-SCDMA系统等问题,研究了TD-SCDMA系统中基于MUSIC算法的DOA估计、基于TD-SCDMA系统均匀圆阵阵列模型,通过对其采用预处理技术,推导了TD-SCDMA系统中用于DOA估计的基本MUSIC算法和求根MUSIC算法,并通过仿真分析了影响DOA估计分辨率的因素。仿真分析表明,求根MUSIC算法具有更高的分辨率。
Aiming at the low resolution of traditional DOA estimation methods and the inability for existing Mul- tiple Signal Classification （MUSIC） algorithm to apply to TD-SCDMA system, this paper makes a study of DOA esti- mation method based on MUSIC algorithm in TD-SCDMA system. With the Uniform Circular Array （UCA） model of TD-SCDMA system preprocessed, the basic MUSIC algorithm and root-MUSIC algorithm of DOA estimation are de- rived for TD-SCDMA system. The factors affecting the resolution of DOA estimation are also analyzed. Simulation results and analysis shows that the root-MUSIC algorithm has a higher resolution than the basic MUSIC algorithm.
出处
《电子科技》
2014年第4期1-4,共4页
Electronic Science and Technology
基金
国家自然科学基金资助项目(61201135)
国家科技重大专项基金资助项目(2012ZX03001027-004)
