| TD-SCDMA中DOA估计的一种ESPRIT算法 |
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| 引用本文： | 龙娟,周围,吴江华.TD-SCDMA中DOA估计的一种ESPRIT算法[J].通信技术,2007,40(9):31-33. |
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| 作者姓名： | 龙娟 周围 吴江华 |
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| 作者单位： | 重庆邮电大学,移动通信技术重点实验室,重庆,400065 |
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| 摘 要： | 智能天线是TD-SCDMA系统的关键技术之一,其核心为波达方向(Direction of Arrival,DOA)估计和波束形成算法。目前大多数DOA估计算法都是以均匀线阵为基础,而TD-SCDMA采用的是8阵元的圆阵列天线,因此,文中采用空间预处理技术,将圆阵虚拟到均匀线阵,再用ESPRIT算法进行DOA估计,最后通过仿真验证了该算法的可行性。
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| 关 键 词： | 波达方向估计 虚拟线阵 旋转不变技术 |
| 文章编号： | 1002-0802（2007）09-0031-03 |
| 修稿时间： | 2007-05-14 |
An ESPRIT Algorithm for DOA Estimation in TD-SCDMA |
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| LONG Juan,ZHOU Wei,WU Jiang-hua.An ESPRIT Algorithm for DOA Estimation in TD-SCDMA[J].Communications Technology,2007,40(9):31-33. |
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| Authors: | LONG Juan ZHOU Wei WU Jiang-hua |
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| Affiliation: | Key Lab of Mobile Communication, Chongqing Univ, of Posts and Telecommunications, Chongqing 400065, China |
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| Abstract: | Smart antenna is the key technology in TD-SCDMA system and its core context is DOA estimation and beam forming. Nowadays,a series of algorithms are based on uniform linear arrays,while the smart antenna of TD-SCDMA is a uniform circular array with 8 elements. In this paper,a virtual uniform linear array is derived by preprocessing so that ESPRIT algorithm can be used to estimate the DOAs. Simulation results have verified the availability of the algorithm. |
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| Keywords: | DOA estimation virtual uniform linear array ESPRIT |
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