| OFDM系统抗多普勒干扰的研究 |
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| 引用本文： | 黄义亮,赵利.OFDM系统抗多普勒干扰的研究[J].计算机仿真,2008,25(1):164-167. |
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| 作者姓名： | 黄义亮 赵利 |
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| 作者单位： | 桂林电子科技大学通信与信息工程系,广西桂林,541004 |
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| 摘 要： | 针对频偏引起的正交频分复用(OFDM)系统中载波间干扰(ICI)的问题,提出一种改进的ICI自消除方案.它的基本方法就是通过旋转接收符号达到载波间的干扰抵消.分析结果表明,使用这个方案,在接收到的信号中所包含的ICI成份可以有效地减少,并且这个方案的载波干扰功率比(CIR)要比常规方案和其它相似的方案更好;同时,仿真结果显示误码率(BER)性能要比其它两个方案优越.因而可以有效地减少OFDM系统对频偏引起的ICI的敏感性,明显地提高系统的性能.
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| 关 键 词： | 正交频分复用 载波干扰功率比 载波间干扰 误码率 自消除 |
| 文章编号： | 1006-9348（2008）01-0164-04 |
| 收稿时间： | 2006-12-18 |
| 修稿时间： | 2006-12-20 |
Mitigating Doppler Interference in OFDM Communication Systems |
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| HUANG Yi-liang,ZHAO Li.Mitigating Doppler Interference in OFDM Communication Systems[J].Computer Simulation,2008,25(1):164-167. |
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| Authors: | HUANG Yi-liang ZHAO Li |
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| Affiliation: | HUANG Yi-liang ZHAO Li (Dept.of Communication , Information Engineering,Guilin University of Electronic Technology,Guilin Guangxi 541004,China) |
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| Abstract: | For inter-carrier interference(ICI)due to frequency offsets,this paper studies a new ICI self-can- cellation scheme for combating the impact of ICI on OFDM systems.Its basic idea is received symbols rotation and in- terference self-cancellation.Analysis results show that the ICI contained in received signals can be effectively re- duced by using this scheme,and the carrier-to-interference power ratio(CIR)of this scheme is obviously better than that of a conventional scheme and another similar scheme.Meanwhi... |
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| Keywords: | OFDM CIR ICI BER Self - cancellation |
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