| OFDM联合信道均衡与I/Q失衡补偿算法 |
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| 引用本文： | 陈楚,彭端,刘元.OFDM联合信道均衡与I/Q失衡补偿算法[J].通信技术,2008,41(9). |
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| 作者姓名： | 陈楚 彭端 刘元 |
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| 作者单位： | 1. 广东工业大学,信息工程学院,广东,广州,510006
2. 广东工业大学,实验教学部,广东,广州,510006 |
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| 基金项目： | 广东省广州市应用基础研究项目 |
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| 摘 要： | 分析多径衰落信道下零中频接收机的I/Q失衡对OFDM系统造成的影响,并在此基础上构造一个结合了信道频率响应与I/Q失衡因子的复合信道模型.通过设计OFDM双导频符号进行复合信道均衡,从而能同时补偿多径衰落信道和I/Q失衡对OFDM系统造成的影响.仿真结果表明:这种联合算法大大提高了OFDM系统的性能,而且具有较低的实现复杂度.
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| 关 键 词： | 正交频分复用 I/Q失衡 信道均衡 双导频 |
OFDM Algorithm of Jointing Channel Equalization and I/Q Imbalance Compensation |
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| CHEN Chu,PENG Duan,LIU Yuan.OFDM Algorithm of Jointing Channel Equalization and I/Q Imbalance Compensation[J].Communications Technology,2008,41(9). |
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| Authors: | CHEN Chu PENG Duan LIU Yuan |
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| Affiliation: | CHEN Chu ,PENG Duan ,LIU Yuan (School of Information Engineering,Guangdong University of Technology,Guangzhou Guangdong 510006,China,Department of Experimental Center,China) |
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| Abstract: | The interference on OFDM systems caused by I/Q imbalance in zero IF receivers over the multi-path fading channel is analyzed,based on which a multiplex channel model in combination of channel frequency response and I/Q imbalance factors is constructed.And the multiplex channel can be equalized through the double-pilot symbol.So the effect of I/Q imbalance and multi-path fading channel are compensated at the same time.The simulation results show that this algorithm enables significant improvement in OFDM sys... |
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| Keywords: | OFDM I/Q imbalance channel equalization double pilots |
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