| On Practical Issues of Adaptive Modulation in OFDM Systems |
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| 引用本文： | WU Jun-li,YIN Chang-chuan,YUE Guang-xinCollege of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,P.R.China. On Practical Issues of Adaptive Modulation in OFDM Systems[J]. 中国邮电高校学报(英文版), 2005, 12(1) |
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| 作者姓名： | WU Jun-li YIN Chang-chuan YUE Guang-xinCollege of Telecommunication Engineering Beijing University of Posts and Telecommunications Beijing 100876 P.R.China |
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| 作者单位： | WU Jun-li，YIN Chang-chuan，YUE Guang-xinCollege of Telecommunication Engineering，Beijing University of Posts and Telecommunications，Beijing 100876，P.R.China |
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| 基金项目： | 国家自然科学基金，国家高技术研究发展计划(863计划) |
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| 摘 要： | 1 Introduction Orthogonal Frequency Division Multiplexing(OFDM)[1~7] is a communications technique that divides acommunications channel into a number of equally spaced fre quency bands. A subcarrier carrying a portion of the user in formation is transmitted in each band. Each subcarrier is or thogonal with every other subcarrier, which differentiatingOFDM from the commonly used Frequency Division Multi plexing (FDM). Over the past decade, OFDM has been ap plied in a…
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On Practical Issues of Adaptive Modulation in OFDM Systems |
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| WU Jun-li,YIN Chang-chuan,YUE Guang-xin. On Practical Issues of Adaptive Modulation in OFDM Systems[J]. The Journal of China Universities of Posts and Telecommunications, 2005, 12(1) |
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| Authors: | WU Jun-li YIN Chang-chuan YUE Guang-xin |
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| Abstract: | The performance of Orthogonal Frequency Division Multiplexing(OFDM)systems with Adaptive Modulation(AM)is studied in this paper.Some factors in the system including frequency group,time interval Channel State Information(CSI)estimation error and channel delay are analyzed.The results of simulation prove the efficiency of AM-OFDM,and indicate CSI estimation error affects the performance of AM-OFDM seriously. |
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| Keywords: | OFDM AM rayleigh fading channel |
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