摘要
为了获取用户空间位置,实现通信容量倍增的目的,采用时空DOA矩阵方法,并提出了一种有效的改进算法——时空虚拟DOA矩阵方法。做了60多次Monte-Carlo仿真实验,获得时空DOA矩阵方法和时空虚拟DOA矩阵算法的仿真结果。得到的结论是时空DOA矩阵具有很强的分辨能力,且能解决二维估计中的角度兼并问题,时空虚拟DOA矩阵算法可以估计超过阵元数的信号,具有较高的分辨性能和较好的稳健性。
A space-time DOA matrix method is adopted and an efficient improved algorithm （virtual space-time DOA matrix method） is proposed to obtain the user space position and realize the multiplication of the communication capacity. The Monte-Carlo simulation experiment was done for 60 times. The simulation results of space-time DOA matrix method and the virtual space-time DOA matrix algorithm were obtained. The results indicate that the space-time DOA matrix is very efficient and has a strong resolution ability, and can solve the problems of angle mergence existing in two-dimensional estimation. The virtual space-time DOA matrix algorithm, which has high resolution performance and is robust, can estimate the signals exceeding the number of array elements.
出处
《现代电子技术》
2010年第23期71-73,共3页
Modern Electronics Technique
关键词
DOA估计
时空矩阵
虚拟阵列
算法研究
DOA estimation
space-time matrix
virtual array
algorithm research
