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频偏与高速移动场景中的协作OFDM系统性能分析

DOI: 10.11830/ISSN.1000-5013.2014.03.0263

Keywords: 协作通信, 正交频分复用, 载波频偏, 时变信道

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Abstract:

理论分析频偏与信道时变引起的子载波间干扰(ICI),以及其对协作正交频分复用(OFDM)系统接收性能的影响,并通过数值仿真得到ICI的分布及系统误码率.实验结果表明:一方面频偏与信道时变共同作用下的ICI更加严重,并由此导致系统性能的严重恶化;另一方面,频偏与信道时变作用下的ICI随子载波间隔的增加而减小.说明低复杂度ICI均衡是可行的.

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