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MIMO-OFDM快时变信道下的一种低复杂度的检测算法 被引量：2

A Low Complexity Detection Algorithm in Time-Varying OFDM System
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摘要 OFDM系统中信道的快速变化会破坏载波间的正交性,产生载波间干扰(ICI)。该文基于快变信道的统计特性,分析了载波间干扰的频域表达式,设计了一种针对快时变OFDM系统载波间干扰的载波间干扰对消检测方案。它可以有效地补偿由于信道快速变化所产生的载波间干扰,从而提高系统性能。实验表明,该文提出的检测方案可以在计算复杂度很小的情况下,有效地抑制由于载波间干扰所产生的误码率性能的下降,并利用载波间分集提高系统性能。 OFDM system is very sensitive to time-varying channel, which may cause inter-carrier interference. In this paper, a layered inter-carrier interference cancellation scheme is proposed for time-varying channel, with detailed analysis of inter-carrier interference in frequency domain. The scheme proposed in this paper can compensate for the ICI terms that significantly affect the bit-error rate of the system. Simulation result is also given to show the performance this new scheme achieved.
作者 俞菲 杨绿溪
机构地区 东南大学无线电工程系
出处 《电子与信息学报》 EI CSCD 北大核心 2007年第7期1584-1587,共4页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60272046) 重大基金(60496310) 教育部博士点基金(20020286014) 江苏省自然科学基金(BK2005061)资助课题
关键词 OFDM系统 快变信道 载波分集 干扰对消 OFDM system Time-varying channel Inter-carrier diversity Interference cancellation
分类号 TN911.23 [电子电信—通信与信息系统]
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参考文献10

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同被引文献18

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电子与信息学报
2007年 第7期

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