| 载波频偏对OFDM系统的影响分析及仿真 |
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| 引用本文： | 庞宗山,李小民,郑宗贵. 载波频偏对OFDM系统的影响分析及仿真[J]. 信息技术, 2011, 0(2): 12-15 |
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| 作者姓名： | 庞宗山 李小民 郑宗贵 |
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| 作者单位： | 1. 军械工程学院光学与电子工程系,石家庄,050003
2. 二炮装备研究院,北京,100085 |
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| 摘 要： | 正交频分复用(OFDM)是4G通信中的关健技术之一,主要依靠各子载波之间的正交性实现高速传输。但OFDM对载波频偏(CFO,Carrier Frequency Offset)非常敏感,很小的频偏就会引起信道间的干扰(ICI)。从理论上分析了载波频偏产生信道间干扰的过程,重点研究了CFO对OFDM性能的影响,并对相关结论进行了仿真验证。
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| 关 键 词： | OFDM 载波频偏 仿真 |
Analysis and simulation of the influence on OFDM system caused by carrier frequency offset |
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| PANG Zong-shan,LI Xiao-min,ZHENG Zong-gui. Analysis and simulation of the influence on OFDM system caused by carrier frequency offset[J]. Information Technology, 2011, 0(2): 12-15 |
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| Authors: | PANG Zong-shan LI Xiao-min ZHENG Zong-gui |
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| Affiliation: | 1.Optical and Electronic Engineering Department,Ordnance Engineering College,Shijiazhuang 050003,China;2.The Second Artillery Equipment Researching Department,Beijing 100085,China) |
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| Abstract: | OFDM(Orthogonal Frequency Division Multiplexing) is one of the key technologies of 4G communication.OFDM has high data rate,is dependent on the orthogonality of subcarriers.However,OFDM is sensitive to the CFO that very small frequency offset would arouse ICI.This paper analyzes the ICI’s procedure of production by rigorous deduction,presents the influence to OFDM system caused by CFO,and validates those through simulation. |
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| Keywords: | OFDM |
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