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OFDM联合信道均衡与I/Q失衡补偿算法 被引量：1

OFDM Algorithm of Jointing Channel Equalization and I/Q Imbalance Compensation
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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。 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 systems and has low complexity.
作者 陈楚 彭端 刘元
机构地区 广东工业大学信息工程学院 广东工业大学实验教学部
出处 《通信技术》 2008年第9期53-55,91,共4页 Communications Technology
基金 广州市应用基础研究项目(2006J1-C0331)
关键词 正交频分复用 I/Q失衡 信道均衡 双导频 OFDM I/Q imbalance channel equalization double pilots
分类号 TN911.23 [电子电信—通信与信息系统]
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参考文献4

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通信技术
2008年 第9期

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