摘要
信号的波达方向是阵列信号处理的一个重要研究方向,波达方向的估计可以应用于空间物体的定位和雷达。对波达方向的准确估计对确定更好的信道估计有很大的帮助,在一定的程度上会提高系统的性能。将PARAFAC技术应用到波达方向角度估计中,对多延时的均匀线阵接收信号进行分析,提出一种三线性模型,并推导出一种对波达方向的盲估计算法。此方法具有较好的性能,在低拍数的情况下也可以较好的工作,并且支持小样本。
DOA estimation is widely applied in radar and mobile objects. Also, accurate DOA estimation is of great help for channel estimation and could upgrades the whole system performance to certain extent. Therefore, DOA angle estimation plays an important role in wireless communication system. Meanwhile, with combination of Matrix theory and parameter estimation of uniform linear array, and based on the theory above, a three-linear model is proposed in this paper, and a new algorithm for blind estimation of angle is also derived, which works very well in low-beat environment and supports small sample.
出处
《通信技术》
2011年第12期1-3,共3页
Communications Technology
