| 一种基于IEEE802.16d系统的OFDM信道估计算法 |
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| 引用本文： | 龚爱斐,陈发堂.一种基于IEEE802.16d系统的OFDM信道估计算法[J].重庆邮电学院学报(自然科学版),2009(1). |
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| 作者姓名： | 龚爱斐 陈发堂 |
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| 作者单位： | 重庆邮电大学移动通信重点实验室; |
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| 摘 要： | 有较长持续时间的正交频分复用符号对频率选择性衰落有更强的承受能力,但是对于时间选择性衰落则较为敏感,因此信道估计在正交频分复用系统中占有重要的地位。对IEEE802.16dOFDM系统的符号结构进行了概述,结合OFDM信道估计的特点,提出了一种基于前导符号和非均匀导频的信道估计的算法,并在SUI1-SUI6信道环境下,用MATLAB对其性能进行了仿真。仿真结果表明,该算法的抗衰落性能有所提高。
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| 关 键 词： | 正交频分复用 IEEE802.16d 导频 前导符号 |
Efficient algorithm for OFDM channel estimation based on IEEE802.16d |
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| GONG Ai-fei,CHEN Fa-tang.Efficient algorithm for OFDM channel estimation based on IEEE802.16d[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2009(1). |
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| Authors: | GONG Ai-fei CHEN Fa-tang |
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| Institution: | Key Laboratory of Mobile Communication Technology;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China |
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| Abstract: | The OFDM symbols with a longer duration have a stronger tolerance for frequency selective fading,but they are more sensitive for time selective fading.Channel estimation in OFDM system occupies an important position.The IEEE802.16d OFDM symbols' structure was outlined,and in accordance with the characteristics of OFDM channel estimation,a new channel estimation algorithm based on the pilot and preamble was proposed.In channel environment of SUI1-SUI6,its performance was simulated by MATLAB.Simulation result... |
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| Keywords: | OFDM IEEE802 16d pilot preamble |
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