| OFDM系统导频信道估计内插算法研究(英文) |
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| 引用本文： | 王昵,邓平.OFDM系统导频信道估计内插算法研究(英文)[J].成都信息工程学院学报,2008,23(2):141-146. |
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| 作者姓名： | 王昵 邓平 |
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| 作者单位： | 西南交通大学信息科学与技术学院,四川,成都,610031 |
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| 摘 要： | 为保证OFDM系统的性能不受信道的多径和衰落效应的影响,需要采用信道估计的方法来跟踪信道响应的变化。目前使用比较多的是导频辅助信道估计,首先利用某种估计算法得到导频处信道响应,再通过某种一维或二维的内插算法获得完整的信道响应。研究了各种内插算法,包括常值内插、线性内插、高斯内插、Cubic内插、Sinc内插和变换域内插,并对各算法在不同信道环境下进行了仿真比较。
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| 关 键 词： | OFDM 信道估计 导频 内插 |
| 文章编号： | 1671-1742(2008)02-0141-06 |
| 修稿时间： | 2007年9月20日 |
Interpolation in OFDM channel estimation based on pilot arrangement |
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| WANG Ni,DENG Ping.Interpolation in OFDM channel estimation based on pilot arrangement[J].Journal of Chengdu University of Information Technology,2008,23(2):141-146. |
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| Authors: | WANG Ni DENG Ping |
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| Institution: | WANG Ni,DENG Ping (Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | The channel estimation technique for the OFDM systems based on the pilot arrangement is investigated.The interpolation algorithm which always follows the channel estimation of the pilot sub-carriers is focused. The estimation of the pilot sub-carriers is based on the LS and MMSE and the channel interpolation is done with the nearest interpolation, linear interpolation, Gaussian interpolation, cubic interpolation, sine interpolation and the transform-domain interpolation. All the schemes are compared with both theoretical analysis and computer simulations. |
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| Keywords: | OFDM channel estimation pilot interpolation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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