| 应用回归算法改进宽带码分多址系统中的信道估计 |
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| 引用本文： | 杨宇,费泽松,赵胜辉,匡镜明. 应用回归算法改进宽带码分多址系统中的信道估计[J]. 北京理工大学学报, 2004, 24(7): 634-637 |
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| 作者姓名： | 杨宇 费泽松 赵胜辉 匡镜明 |
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| 作者单位： | 北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081;北京理工大学,信息科学技术学院电子工程系,北京,100081 |
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| 基金项目： | 与爱立信公司联合资助项目 |
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| 摘 要： | 研究宽带码分多址系统中瑞利衰落信道下使用导频符号辅助信道估计的方法,并提出应用回归算法改进信道估计.在初始估计中,由传统方法得到的信道参数估计值,通过长时线性或二次曲线回归来修正短时估计误差.仿真结果表明,在宽带码分多址系统中应用该方法可以获得0.4 dB的增益.
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| 关 键 词： | 宽带码分多址 信道估计 回归算法 |
| 文章编号： | 1001-0645(2004)07-0634-04 |
| 收稿时间： | 2003-09-08 |
| 修稿时间： | 2003-09-08 |
Improvement of Channel Estimation Using Regression Algorithm for Wideband Code Division Multiple Access |
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| YANG Yu,FEI Ze-song,ZHAO Sheng-hui and KUANG Jing-ming. Improvement of Channel Estimation Using Regression Algorithm for Wideband Code Division Multiple Access[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2004, 24(7): 634-637 |
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| Authors: | YANG Yu FEI Ze-song ZHAO Sheng-hui KUANG Jing-ming |
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| Affiliation: | Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China;Department of Electronic Engineering, School of Information Science and Technology, Beijing Institute of Technology, Beijing100081, China |
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| Abstract: | Pilot symbol-assisted channel estimation under Rayleigh fading channel in wideband code division multiple access (WCDMA) is investigated. Application of regression algorithm in channel estimation is presented. After initial channel estimation with the classical methods, channel gains estimated are filtered by linear or conic regression algorithm within a given regression length. Simulation results showed that this method offers up to 0.4 dB of gain in a WCDMA system. |
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| Keywords: | wideband code division multiple access (WCDMA) channel estimation regression algorithm |
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