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一种新颖的基于差分结构的判决反馈均衡器 被引量：1

A New Difference Structure-based Decision Feedback Equalizer
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摘要 多用户型的检测系统,既要求低误码率(BER),又要求较低计算复杂度.本文以此为目的提出一种新颖的具有差分结构的多用户反馈判决反馈均衡器系统,它是由多级具有差分结构的误差反馈滤波器的判决反馈均衡器(DFE-EFF)构成.此算法选择较优的多用户干扰抵消的具有误差反馈滤波器的判决反馈均衡器(多用户干扰抵消DFE- EFF,即多用户反馈DFE-EFF)的方法;并采用差分结构来解决因性能提升所带来复杂度增加的问题.文中给出仿真结果,就多用户反馈DFE-EFF以及具有差分结构的多用户反馈DFE-EFF性能和计算效率做出比较分析. Bit error rate（BER） performance and computational efficiency are two keys which judgea mutiuser detectors performance. In DS-CDMA, a new multiuser interference cancellation decision feedback equalizer which has error feedback filter, based on difference structure, is presented. Compared with previous multiuser interference cancellation decision feedback equalizer which haserror feedback filter, the new approach reduces computational efficiency by using difference algorithm, also keeps a good BER performance.
作者 孔政敏 丁李 朱光喜
机构地区 华中科技大学武汉光电国家实验室(筹)
出处 《电子学报》 EI CAS CSCD 北大核心 2007年第B06期174-178,共5页 Acta Electronica Sinica
基金 国家自然科学基金重大项目(No.60496315) 国家863高技术研究发展计划(No.2003AA12331005)
关键词 多用户检测 判决反馈均衡器 干扰抵消 误差反馈滤波器 差分结构 decision feedback equalizer interference cancellation difference
分类号 TN929.533 [电子电信—通信与信息系统]
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参考文献14

  • 1J JBlanz, A. Klein, M. Naghan, A. Steil. Celluar sprectrum efficiency of a joint detection C/TDMA mobile radio system[A]. C G Gunther(Ed) ,Proc International Zurich Seminar on Digital Communications [C]. London: Springer-Verlag, 1994. 184 - 195.
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  • 9孔政敏,朱光喜.基于多用户反馈的判决反馈均衡器的研究[J].电子学报,2007,35(10):1854-1858. 被引量：3
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二级参考文献14

  • 1John G Proaki. Digital Communications[M]. 4th Ed. Beijing: Publishing House of Electronics Industry, 2001.
  • 2S Verdu. Minmum probability of error for asynchronous multiuser channels [J]. IEEE Trans Info Theory, 1986,32(1):85-96
  • 3M Abdulrahman, D Faconer, A Sheikh. Equalization for interference cancellation in spread spectuum multiple access system [A]. IEEE 42^nd Vehicular Technology Conference[C]. Denver CO, vol. 1,1992.71 - 74.
  • 4M Abdulrahman, A Sheikh, D Faconer. Decision feedback equalization for CDMA in indoor wireless communications[J]. IEEE Journal on Selected Areas in Commun, 1994, 12(4) :698 - 706.
  • 5D W Kim, S H Han, M S Eun, J S Choi, Y S Cho. An adaptive decision feedback equalizer using error feedback [J]. IEEE Trans on Consumer Electronics, 1996,42 (3) : 468 - 477.
  • 6王正茂.CDMA系统中的多用户检测技术研究[D].广州:华南理工大学电子与信息学院,2003.
  • 7S Verdu. Multiuser Detection[M]. Cambridge, UK: Cambridge University Press, 1998.
  • 8Feng Liu, Prabhu V K. Performance analysis of an improved adaptive PIC receiver for CDMA systems[A]. IEEE 5^th International Symposium on Multi-Dimensional Mobile Communications Proceedings[C]. vol. 1,2004.11 - 15.
  • 9Uzmi, Zartash Afzal. Simplified multiuser detection for CDMA systems[D]. USA: department of electrical engineering, Stanford University, 2032.
  • 10Nayak, Birendra Kumar. Adaptive differential interference cancellation in multiuser detection method for DS-CDMA communication[D]. USA: department of electrical and computer engineering, University of Texas at El Paso,2004.

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电子学报
2007年 第B06期

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