| WCDMA系统的迭代信道估计研究 |
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| 引用本文： | 赵军辉,王东明,桂益俊. WCDMA系统的迭代信道估计研究[J]. 电路与系统学报, 2009, 14(3) |
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| 作者姓名： | 赵军辉 王东明 桂益俊 |
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| 作者单位： | 1. 北京交通大学,电子信息工程学院,北京,100044
2. 东南大学移动通信国家重点实验室,江苏,南京,210096 |
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| 摘 要： | 本文针对WCDMA系统非连续导频情况,研究了采用Turbo编码的迭代信道估计技术,提出了一种基于LMS算法自适应滤波的信道估计方法.对信道估计值采用不同滤波器方法:维纳滤波、滑动平均滤波、FIR滤波、LMS自适应滤波的性能进行了比较,同时采用基于代价函数的方法对迭代信道估计进行了分析.理论分析和仿真结果表明对迭代信道估计所得信道估计值进行滤波的方法能够提高信道估计的精度,从而降低接收机的误比特率.
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| 关 键 词： | Turbo码 信道估计 |
Iterative channel estimation for WCDMA system |
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| ZHAO Jun-hui,WANG Dong-ming,GUI Yi-jun. Iterative channel estimation for WCDMA system[J]. Journal of Circuits and Systems, 2009, 14(3) |
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| Authors: | ZHAO Jun-hui WANG Dong-ming GUI Yi-jun |
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| Affiliation: | ZHAO Jun-hui1,WANG Dong-ming2,GUI Yi-jun2(1.School of Electronics , Information Engineering,Beijing Jiaotong University,Beijing 100044,China,2.National Mobile Communication Research Lab,Southeast University,Nanjing 210096,China) |
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| Abstract: | In WCDMA standard,the pilot channel is time-multiplexed with power control bits and is not continuous.Iterative channel estimation for WCDMA system with turbo coding and comparison between different filter algorithms for estimated channel parameter such as wiener fitter,moving average filter,FIR filter,LMS adaptive filter are studied in this paper.A cost function is also used to analyze the algorithm of iterative channel estimation.Theoretical and simulation results illustrate that the proposed LMS filter f... |
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| Keywords: | WCDMA LMS |
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