| 基于DOA估计的CDMA智能天线系统 |
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| 引用本文： | 李国通 陈文正 徐绿洲 仇佩亮. 基于DOA估计的CDMA智能天线系统[J]. 浙江大学学报(工学版), 2001, 35(4): 380-383 |
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| 作者姓名： | 李国通 陈文正 徐绿洲 仇佩亮 |
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| 作者单位： | 李国通（浙江大学信息与电子工程学系浙江杭州 310027） 陈文正（浙江大学信息与电子工程学系浙江杭州 310027） 徐绿洲（浙江大学信息与电子工程学系浙江杭州 310027） 仇佩亮（浙江大学信息与电子工程学系浙江杭州 310027） |
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| 基金项目： | 浙江省自然科学基金资助项目(223J97130328). |
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| 摘 要： | CDMA信号经解扩后，采用传统高分辨率算法MUSIC和ESPRIT，估计信号的DOA方向。然后，用阵列响应矢量作为加权系数，保证基站接收到最大的信号能量．通过仿真，研究了这一系统在移动通信环境下的性能，包括信道衰落、信号角度扩散及同频干扰用户等对DOA估计的影响，仿真结果表明：DOA估计误差和误码率与信号衰落、信号角度扩散及同频干扰用户等有密切关系。
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| 关 键 词： | Smart Antenna CDMA DOA MUSIC ESPRIT |
| 文章编号： | 1008-973(2001)04-0380-04 |
| 修稿时间： | 1999-03-02 |
CDMA smart antenna system based on DOA estimation |
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| LI Guo-tong,CHEN Wen-zheng,XU Lu-zhou,QIU Pei-liang ,. CDMA smart antenna system based on DOA estimation[J]. Journal of Zhejiang University(Engineering Science), 2001, 35(4): 380-383 |
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| Authors: | LI Guo-tong CHEN Wen-zheng XU Lu-zhou QIU Pei-liang |
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| Abstract: | Presents a CDMA smart antenna system based on DOA estimation. The system uses the conventional high-resolution algorithms, MUSIC and ESPRIT, to estimate the DOA of the received signals, which are dispread. Then the array response vector is used as weight to assure that base station can receive the maximal power for the desired signal. We studied the performances of this system by simulations, including the impacts of channel fading, angle spread and co-channel interference on DOA estimation. The simulation results indicate that the estimation error of DOA is closely related with channel fading, angle spread and number of co-channel users. However the estimation error of DOA has a few influences on the error rate of this system. |
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| Keywords: | Smart Antenna CDMA DOA MUSIC ESPRIT |
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