| 基于FFT变换的快速信道估计算法 |
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| 引用本文： | 周围,姚丽娜. 基于FFT变换的快速信道估计算法[J]. 重庆邮电大学学报(自然科学版), 2010, 22(5): 551-554. DOI: 10.3979/j.issn.1673-825X.2010.05.007 |
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| 作者姓名： | 周围 姚丽娜 |
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| 作者单位： | 重庆邮电大学,通信与信息工程学院,重庆,400065;重庆邮电大学,通信与信息工程学院,重庆,400065 |
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| 基金项目： | 国家高技术研究发展计划（“863”计划）重点项目（2009AA011302）,重庆市教委科研项目（KJ090513） |
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| 摘 要： | 联合检测作为TD-SCDMA的关键技术之一，它的实现依赖于对无线信道响应的快速而准确的估计。传统方法的信道估计都需要进行计算量很大的矩阵求逆运算，不能满足实时快速的要求。提出了2种使用FFT（fast Fourier transform）变换的快速信道估计算法，简化了计算量，仿真结果表明，联合检测性能并未受到不利影响。
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| 关 键 词： | TD-SCDMA 联合检测 信道估计 快速傅立叶交换(FFT) |
| 收稿时间： | 2009-09-22 |
Fast channel estimation algorithm based on FFT |
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| ZHOU Wei,YAO Li-na. Fast channel estimation algorithm based on FFT[J]. Journal of Chongqing University of Posts and Telecommunications, 2010, 22(5): 551-554. DOI: 10.3979/j.issn.1673-825X.2010.05.007 |
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| Authors: | ZHOU Wei YAO Li-na |
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| Affiliation: | College of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China |
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| Abstract: | Joint detection, is one of the key technologies of TD-SCDMA, whose realization depends on the rapid and accurate estimation of wireless channel response. Traditional channel estimation algorithms needed to do matrix inversion operation with large computation load and consequently could not meet the requirements of real-time and speed. In this paper, two kinds of channel estimation algorithms using fast Fourier transform (FFT) were proposed, which simplified the computation. Simulation results show that the performance of joint detection is not obviously affected. |
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| Keywords: | TD-SCDMA joint detection channel estimation fast Fourier transform (FFT) |
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