| 一种改进的OFDM盲同步算法 |
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| 引用本文： | 刘甲子,邵怀宗,彭启琮,陈胜. 一种改进的OFDM盲同步算法[J]. 通信技术, 2007, 40(7): 27-29 |
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| 作者姓名： | 刘甲子 邵怀宗 彭启琮 陈胜 |
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| 作者单位： | 电子科技大学,通信与信息工程学院,四川,成都,610054 |
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| 摘 要： | 研究了OFDM系统中的最大似然估计(ML)算法,并使用数据循环移位以及多符号联合估计等技术对ML算法进行了改进,随后提出了一个综合性的新方案。仿真结果显示,在AWGN和瑞利多径衰落信道中,该方案可以有效提高符号定时偏差(STO)和载波频率偏移(CFO)的估计性能。
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| 关 键 词： | 正交频分复用 同步 最大似然估计 |
| 文章编号： | 1002-0802(2007)07-0027-03 |
| 修稿时间： | 2007-04-16 |
An Improved Blind Synchronization Scheme for OFDM Systems |
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| LIU Jia-zi,SHAO Huai-zong,PENG Qi-cong,CHEN Sheng. An Improved Blind Synchronization Scheme for OFDM Systems[J]. Communications Technology, 2007, 40(7): 27-29 |
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| Authors: | LIU Jia-zi SHAO Huai-zong PENG Qi-cong CHEN Sheng |
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| Abstract: | In this paper, the ML estimation algorithm in the orthogonal frequency division multiplexing (OFDM) systems is discussed in detail. Through making use of the two separate optimizing methods, a novel scheme for improving the symbol timing offset (STO) and carrier frequency offset (CFO) estimation is proposed. Simulation results show that the new scheme can effectively raise the performance of the STO and CFO estimator, both in the AWGN channel and Rayleigh multi-path channel situations. |
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| Keywords: | OFDM synchronization maximum likelihood estimation |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
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