| 一种短波OFDM系统窄带干扰消除技术 |
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| 引用本文： | 李嵩斌,李慧芳.一种短波OFDM系统窄带干扰消除技术[J].空军雷达学院学报,2011,25(2):125-127. |
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| 作者姓名： | 李嵩斌 李慧芳 |
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| 作者单位： | 1. 空军雷达学院训练部,武汉,430019
2. 95174部队,武汉,430040 |
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| 摘 要： | 鉴于短波OFDM系统的频带较宽,很容易受到传统短波电台窄带的干扰,且当干扰严重时性能恶化的现状,提出了一种短波OFDM系统窄带干扰消除技术.该技术是以自适应子载波为基础,在接收端估计窄带干扰的位置和幅度等信息,然后将受窄带干扰影响的子载波关闭,并通过反馈信道将关闭子载波的信息反馈至发送端,使之在后续的通信过程中关闭这部分子载波.仿真结果表明:在信道估计准确的前提下,采用此消除技术的系统性能指标与无窄带干扰系统的误码率性能指标基本一致,对改善短波OFDM通信系统性能具有实际意义.
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| 关 键 词： | 短波正交频分复用 窄带干扰 短波信道模型 自适应子载波 |
A Scheme of Narrowband Interference Cancellation in SW OFDM System |
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| LI Song-bing,LI Hui-fang.A Scheme of Narrowband Interference Cancellation in SW OFDM System[J].Journal of Air Force Radar Academy,2011,25(2):125-127. |
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| Authors: | LI Song-bing LI Hui-fang |
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| Affiliation: | LI Song-bing1,LI Hui-fang2(1.Division of Training,AFRA,Wuhan 430019,China,2.95174 Unit of the PLA,Wuhan 430040,China) |
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| Abstract: | Considering that the frequency band of OFDM system is wider,the system is liable to be interfered by conventional SW radios and its performance can be deteriorated due to sever interference,this paper puts forward a scheme of narrowband interference cancellation in SW OFDM.In this scheme,based on an adaptive sub-carrier,the information on location and amplitude of narrowband interference is estimated and then the sub-carrier interfered by the narrowband is closed while the information on sub-carrier closing... |
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| Keywords: | SW OFDM Narrowband interference(NBI) SW channel model adaptive sub-carrier |
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