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时变信道下频域均衡系统的干扰抑制 被引量：3

Interference cancellation for frequency- domain equalization systems in time-variant channels
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摘要 信道的时变特性会影响单载波频域均衡(SC-FDE)系统的性能。对时变导致的干扰进行了理论分析,并在此基础上,参考正交频分复用(OFDM)系统中载波间干扰的消除方法,提出了单载波频域均衡系统中干扰自消除、时域加窗和分段均衡等抑制信道时变干扰的方法。分析和仿真表明,这几种方法都能有效地抑制信道时变导致的干扰。但是干扰自消除和时域加窗方法需要重复传送相同的信息,效率有所下降;而分段均衡方法增加分段数目,在提高系统性能的同时也增加了接收复杂度。 A time-variant multipath channel distorts a single carrier frequency-domain equalization (SC-FDE) system. This paper analyzes the interference due to the time-variant channels to reduce the interference in SC-FDE systems with interference self-cancellation, time-domain windowing, and segment equalization. The simulations show that the effect of the time-variant channel can be effectively reduced with these methods. The redundant modulations of interference self-cancellation and time-domain windowing cause reductions in efficiency. Increasing the number of segments increases the complexity of segment equalization.
作者 施婷婷 周世东 姚彦
机构地区 清华大学电子工程系微波与数字通信技术国家重点实验室
出处 《清华大学学报（自然科学版）》 EI CAS CSCD 北大核心 2005年第3期329-333,336,共6页 Journal of Tsinghua University(Science and Technology)
基金 国家自然科学基金资助项目(90204001) 国家"八六三"高技术项目(2001AA123012)
关键词 频域均衡 时变信道 干扰自消除 时域加窗 分段均衡 frequency-domain equalization (FDE) time-variant channel interference self-cancellation time-domain windowing segment equalization
分类号 TN92 [电子电信—通信与信息系统]
  • 相关文献

参考文献8

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二级参考文献10

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共引文献5

同被引文献23

  • 1刘谦雷,杨绿溪.单载波频域均衡与多载波OFDM误码性能的理论比较[J].电子与信息学报,2005,27(3):411-414. 被引量：12
  • 2Guo Q H,Li P.A low-complexity iterative channel estimation and detection technique for doubly selective channels. IEEE-GLOBECOM . 2008
  • 3Wang Y,Dong X D,Wittke P Het al.Cyclic prefixed single carrier transmission in ultra-wideband communications. IEEE-TWC . 2006
  • 4Takahashi Y,Iwanami Y,Okamoto Eet al.A comparison of time domain equalizers by block processing in SISO single carrier transmission. IEEE-PIMRC . 2007
  • 5Kambara K,Nishimoto H,Nishimura Tet al.Subblock processing in MMSE-FDE under fast fading environments. IEEE-JSAC . 2008
  • 6Kwon U K,Im G H.Cyclic delay diversity with frequency domain turbo equalization for uplink fast fading channels. IEEE-LCOMM . 2009
  • 7Ma X Q,Kobayashi H,Schwartz S C.Effect of frequency off set on BER of OFDM and single carrier systems. IEEE-PIMRC . 2003
  • 8Falconer D,Ariyavisitakul SL,Benyamin-Seeyar A,et al.Frequency domain equalization for single-carrier broadband wireless systems. IEEE Communications Magazine . 2002
  • 9BENVENUTO N,TOMASIN S.On the comparison between OFDM and single carrier with a DFE using a frequency-domain feedforward filter. IEEE Transactions on Communications . 2002
  • 10Yeesoo Han,,Heon Huh,James V.Krogmeier.Comparison of Error Probability for OFDM and SC-FDE. . 2003

引证文献3

清华大学学报（自然科学版）
2005年 第3期

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