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重叠剪切法频域均衡固有误差分析及其改进方法

许国平 何维 张欣 杨大成

许国平, 何维, 张欣, 杨大成. 重叠剪切法频域均衡固有误差分析及其改进方法[J]. 电子与信息学报, 2008, 30(9): 2178-2181. doi: 10.3724/SP.J.1146.2007.00304
引用本文: 许国平, 何维, 张欣, 杨大成. 重叠剪切法频域均衡固有误差分析及其改进方法[J]. 电子与信息学报, 2008, 30(9): 2178-2181. doi: 10.3724/SP.J.1146.2007.00304
Xu Guo-Ping, He Wei, Zhang Xin, Yang Da-Cheng. Analysis of Inherent Error of Overlap-Cut Method Frequency Domain Equalization and Relating Improvements[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2178-2181. doi: 10.3724/SP.J.1146.2007.00304
Citation: Xu Guo-Ping, He Wei, Zhang Xin, Yang Da-Cheng. Analysis of Inherent Error of Overlap-Cut Method Frequency Domain Equalization and Relating Improvements[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2178-2181. doi: 10.3724/SP.J.1146.2007.00304

重叠剪切法频域均衡固有误差分析及其改进方法

doi: 10.3724/SP.J.1146.2007.00304

Analysis of Inherent Error of Overlap-Cut Method Frequency Domain Equalization and Relating Improvements

  • 摘要: 该文提出了降低CDMA下行重叠剪切(OC)法频域均衡接收机计算复杂度的方法。基于FFT/IFFT变换的频域均衡算法,可以将均衡器简化成单抽头的结构,复杂度大大低于时域均衡算法。通过分析OC法频域均衡接收机系统固有误差的产生原因和分布特点,提出了对OC法的改进方法。理论分析和仿真结果都表明:改进后的频域均衡接收机,在计算复杂度降低的情况下,可以取得比原有频域均衡算法更好的性能。
  • [1] Duel-Hallen A, Holtzman J, and Zvonar Z. Multiuserdetection for CDMA systems [J]. IEEE PersonalCommunications, 1995, 2(2): 46-58. [2] Tomasin S and Benvenuto N. Frequency-domaininterference cancellation and nonlinear equalization forCDMA systems[J].. IEEE Trans. on Wireless Commun.2005, 4(5):2329-2339 [3] Hwang T and Li Y. Iterative cyclic prefix reconstruction forcoded single-carrier systems with frequency-domainequalization (SC-FDE) [C]. 57th IEEE SemiannualVehicular Technology Conf., Jeju Island, Korea, 2003, Vol.3:1841-1845. [4] Falconer D, Ariyavisitakul S L, and Benyamin-Seeyar A, etal.. Frequency domain equalization for single-carrierbroadband wireless systems [J]. IEEE CommunicationsMagazine, 2002, 40(4): 58-66. [5] Czylwik A. Comparison between adaptive OFDM and singlecarrier modulation with frequency domain equalization [C].47th IEEE Vehicular Technology Conf., Phoenix ,U.S.A. ,1997, Vol.2: 865-869. [6] Hunt B R. A matrix theory proof of the discrete convolutiontheorem [J].IEEE Trans. on Audio and Electroacoustics.1971, 19(4):285-288 [7] Martoyo L, Weiss T, and Capar F, et al.. Low complexityCDMA downlink receiver based on frequency domainequalization [C]. 58th IEEE Semiannual VehicularTechnology Conf., Orlando, U.S.A., 2003, Vol.2: 987-991. [8] [8] ITU-R. Recommendation M.1225-1997, Guidelines forevaluation of radio transmission technologies for IMT-2000[S]. Geneva: ITU-R, 1997: 24-30. [9] Wang Q X, Li B J, and Yang D C. Low complexity layeredspace-frequency scheme for MIMO-CDMA system [C][J].2005International Conference on Wireless Communications,Networking and Mobile Computing, New Orleans.2005,Vol.1:139-142 [10] Martoyo I, Schmidt M, and Jondral F. FDE-RAKE: a PICmultiuser detector for CDMA downlink. 2004 IEEE EighthInternational Symposium on Spread Spectrum Techniquesand Applications, Sydney, 2004: 47-50.
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出版历程
  • 收稿日期:  2007-03-01
  • 修回日期:  2007-09-12
  • 刊出日期:  2008-09-19

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