| 一种新的基于伪导频搜索的MB-LSF信道估计算法 |
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| 引用本文： | 朱竞,袁伟娜,朱煜,黄如.一种新的基于伪导频搜索的MB-LSF信道估计算法[J].医学教育探索,2014(6):758-762. |
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| 作者姓名： | 朱竞 袁伟娜 朱煜 黄如 |
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| 作者单位： | 华东理工大学信息科学与工程学院， 上海 200237;华东理工大学信息科学与工程学院， 上海 200237;华东理工大学信息科学与工程学院， 上海 200237;华东理工大学信息科学与工程学院， 上海 200237 |
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| 基金项目： | 中央高校基本科研业务费专项资金 |
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| 摘 要： | 针对伪导频搜索算法复杂度高的情况，对基于伪导频的MB LSF信道估计算法进行了研究。提出先估计导频位置的信道响应，然后通过线性插值得到所有位置的信道响应，进而检测得到伪导频的估计值，将其作为第1次搜索的符号。理论分析和仿真结果都证明了这种新算法在不影响信道估计性能的前提下，能够很大程度地降低伪导频的搜索次数。
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| 关 键 词： | 伪导频 最小二乘拟合 信道估计 |
| 修稿时间： | 2014/2/25 0:00:00 |
A New MB-LSF Channel Estimation Algorithm Based on Pseudo Pilot Searching |
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| ZHU Jing,YUAN Wei-n,ZHU Yu and HUANG Ru.A New MB-LSF Channel Estimation Algorithm Based on Pseudo Pilot Searching[J].Researches in Medical Education,2014(6):758-762. |
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| Authors: | ZHU Jing YUAN Wei-n ZHU Yu and HUANG Ru |
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| Institution: | School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;School of Information Science and Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | The pseudo pilots searching algorithm has high complexity. Hence, a new MB LSF channel estimation algorithm based on pseudo pilot searching is proposed in this paper. The channel response of pilot positions is first estimated. And then, all the other channel responses are obtained by using linear interpolation. Thus, the detection of pseudo pilots is achieved, which is further used as the first search symbol. Both the theorical analysis and simulation results show that the proposed algorithm can largely decrease the research times of pseudo pilots without degrading the performance of channel estimation. |
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| Keywords: | pseudo pilot least square fitting channel estimation |
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