| 一种改进的OFDM载波干扰自消除算法 |
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| 引用本文： | 井梅,钱良,杨峰. 一种改进的OFDM载波干扰自消除算法[J]. 信息技术, 2008, 32(6) |
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| 作者姓名： | 井梅 钱良 杨峰 |
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| 作者单位： | 上海交通大学电子工程系无线通信技术研究所,上海,200240 |
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| 摘 要： | OFDM系统因采用正交子载波技术使得对频率偏移非常敏感,尤其是当频率偏移较大时,误码率性能严重恶化.在分析由Zhao等提出的ICI自消除算法及其改进算法的基础上,提出一种收发端权重因子联合优化算法,该算法极大地提高了OFDM系统的载干比(CIR,carrier-to-interference power ratio)性能.仿真表明,该算法不仅实现简单,而且在频率偏移较大时仍然具有很好的性能.
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| 关 键 词： | OFDM ICI自消除 频率偏移 改进算法 OFDM 载波干扰 消除算法 systems communication algorithm 仿真 误码率性能 power ratio 载干比 联合优化算法 权重因子 Zhao 分析 严重 敏感 频率偏移 载波技术 |
An improved ICI self-cancelation algorithm for OFDM communication systems |
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| JING Mei,QIAN Liang,YANG Feng. An improved ICI self-cancelation algorithm for OFDM communication systems[J]. Information Technology, 2008, 32(6) |
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| Authors: | JING Mei QIAN Liang YANG Feng |
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| Affiliation: | JING Mei,QIAN Liang,YANG Feng(Institute of Wireless Communication Technology,Department of Electronic Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | The orthogonal frequency-division multiplexing(OFDM) communication systems is very sensitive to the frequency offsets due to it's orthogonal properties,especially when the frequency offsets are very large,the bit error rate(BER) performance is seriously degraded.Based on the analysis of Zhao's ICI self-cancelation algorithm and its improved algorithm,this paper proposes an algorithm that optimizes the transceiver weight factors,which greatly enhances the CIR(carrier-to-interference power ratio) performance.... |
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| Keywords: | OFDM ICI self-cancelation frequency offset |
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