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MIMO-OFDM系统载波间干扰的时域消除 被引量：2

Intercarrier Interference(ICI) Cancellation by Time-Equalization in MIMO-OFDM Systems
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摘要 由于载波间干扰(ICI)是影响正交频分复用(OFDM)系统性能的重要因素,一般消除ICI时作信道估计都采用辅助导频的方法,需要使用大量的离散导频,为此提出了一种对M IMO信道中ICI消除的时域均衡方法。该方法利用M IMO空时检测后的数据信息迭代回去,当作导频符号估计出时变信道的冲激响应,然后通过时域均衡消除ICI,而无需额外的导频,在改善系统误误码率的同时。 For orthogonal frequency - division multiplexing （OFDM） communication systems, a loss of subcarrier orthogonality due to time -variant multipath channel leads to intercarrier interference （ICI）. This paper studies an ICI cancellation method for multiple input multiple output（MIMO） system by time -domain equalization. To gain the optimal filter coefficient, the channel information should be estimated. In this paper, the data information is used after MIMO detection as scatter pilot to perform time - variant channel estimation. It needs no any extra pilot information, and can improve the system bandwidth utilization.
作者 金益峰 陈容 罗汉文
机构地区 上海交通大学电子工程系
出处 《电讯技术》 2006年第5期63-66,共4页 Telecommunication Engineering
基金 国家高科技研究发展计划(863计划)项目(2003AA12310) 国家自然科学基金重点项目(60332030)
关键词 OFDM MIMO 载波间干扰 时域均衡 OFDM MIMO ICI time - equalization
分类号 TN911 [电子电信—通信与信息系统]
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参考文献6

  • 1P M G Linnartz, A Gorokhov. New equalization approach for OFDM over dispersive and rapidly timer varying channel[C]//. Proc. IEEE Int. Symposium Personal Indoor Mobile Radio Commun( vol. 2). 2002 : 1375 - 1379.
  • 2Zhao Y, Hagnann S G. Intercarrier Interference Self-Cancellation Scheme for OFDM Mobile Communication Systems[J]. IEEE Trans Commun, 2001,49(7) : 1185-1191.
  • 3A Stamoulis, S N Diggavi, N Al-Dhahir. Intercarrier Interference in MIMO OFDM [ J ]. IEEE Trans. Signal Processing, Oct. 2002, 50 : 2451 - 2464.
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同被引文献10

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  • 8Zhao Y,Haggman S G.Intercarrier interference self-cancellation scheme for OFDM mobile communication systems[].IEEE Transactions on Communications.2001
  • 9Alireza Seyedi,Gary J Saulnier.General ICI Self-Cancellation Scheme for OFDM Systems[].IEEE Transactions on Vehicular Technology.2005
  • 10赵利利,邓平,陈红,田斌鹏.OFDM系统中载波间干扰抑制方法[J].电讯技术,2008,48(11):43-46. 被引量：2

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电讯技术
2006年 第5期

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