| 非周期扩频CDMA系统中时空信道的盲估计 |
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| 引用本文： | 蒋伯峰,冯爱刚,殷勤业. 非周期扩频CDMA系统中时空信道的盲估计[J]. 电子学报, 2001, 29(6): 778-781 |
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| 作者姓名： | 蒋伯峰 冯爱刚 殷勤业 |
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| 作者单位： | 西安交通大学电信学院信息工程研究所,陕西西安 710049 |
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| 基金项目： | 国家自然科学基金!(No .6 9872 0 2 9)，国家博士点基金!(No .19990 6 980 8)，深圳华为公司科技基金 |
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| 摘 要： | 时空信道可以用矢量信道冲激响应(VCIR)来描述,正确估计VCIR是智能天线系统实现的关键技术.本文从多用户解相关的思想出发,利用子空间技术实现了非周期扩频的CDMA系统时空信道的盲估计,所给出的时空信道估计方法具有抗远近效应的能力.计算机仿真实验表明,时空信道的估计精度完全可以满足DOA与相对时延信息提取的要求.
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| 关 键 词： | 时空信道 非周期扩频 盲估计 |
| 文章编号： | 0372-2112 (2001) 06-0778-04 |
| 收稿时间： | 2000-04-24 |
Blind Space-Time Channel Estimation for CDMA with Aperiodic Spreading Code |
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| JIANG Bo feng,FENG Ai gang,YIN Qin ye. Blind Space-Time Channel Estimation for CDMA with Aperiodic Spreading Code[J]. Acta Electronica Sinica, 2001, 29(6): 778-781 |
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| Authors: | JIANG Bo feng FENG Ai gang YIN Qin ye |
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| Affiliation: | Information Engineering Institute,School of Electronics and Information Engineering Xi'an Jiaotong University,Xi'an,Shanxi 710049,China |
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| Abstract: | Space time channel can be described by vector channel impulse response (VCIR).Estimation of the VCIR is very important for Smart Antenna Systems.In this paper,based on multi user decorrelation,a blind VCIR estimation method for CDMA with aperiodic spreading code is proposed.The new method has the ability to resist near far effect.Computer simulation demonstrates that the accuracy of the VCIR estimated by the new method can meet the need to extract DOA and time delay information. |
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| Keywords: | space time channel aperiodic spreading blind estimation |
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