| 高速移动环境下WiMAX系统多普勒频移估计技术研究 |
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| 引用本文： | 郑洪江.高速移动环境下WiMAX系统多普勒频移估计技术研究[J].塔里木农垦大学学报,2009,21(1):40-42. |
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| 作者姓名： | 郑洪江 |
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| 作者单位： | 塔里木大学信息工程学院,新疆,阿拉尔,843300 |
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| 摘 要： | 正交频分复用（OFDM）技术是WiMAX系统的关键技术之一。在高速移动环境下，多普勒效应成为影响系统性能的关键因素。本文在介绍OFDM技术的基础上，对多普勒效应的频移估计进行研究，重点研究了高速环境下的多普勒频移估计算法。从仿真结果可知，采用有效的估计算法，可较好的抑制载波间干扰，改善系统性能。
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| 关 键 词： | WiMAX 正交频分复用 多普勒频移 |
Study on Doppler shift estimation Technologies of WiMAX in High-Speed Mobile Communications |
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| Zheng Hongjiang.Study on Doppler shift estimation Technologies of WiMAX in High-Speed Mobile Communications[J].Journal of Tarim University of Agricultural Reclamation,2009,21(1):40-42. |
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| Authors: | Zheng Hongjiang |
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| Institution: | Zheng Hongjiang (College of Information Engineering,Tarim University, Alar, Xinjiang 843300) |
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| Abstract: | Orthogonal Frequency Division Multiplexing （OFDM） is one of the key technologies of WiMAX system. The Doppler effect is a key factor impacted on system performance in high--speed mobile environment. This paper studied respectively Doppler shift estimation based on OFDM technology, and focuses on Doppler shift estimation algorithm in high--speed environment. From the simulation results, the effective Doppler shift estimation algorithm, can be better to restrain inter-- carrier interference, and improve system performance. |
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| Keywords: | WiMAX |
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