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含参量线性多用户检测器 被引量：1

The Linear Multiuser Detector with Parameters
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摘要 提出了含参量线性多用户检测器,该检测器利用参量对用户特征波形的相关矩阵进行对角加载,通过选择最佳参量,使得检测器输出信干比最大,从而获得最优检测。给出了最佳参量的计算公式,研究了含参量检测器与匹配滤波检测器(MF),解相关检测器以及最小均方误差检测器(MMSE)的相互关系。理论分析和仿真结果表明,最佳参量的估计是有效的,含参量检测器统一了MF,解相关和MMSE检测器,具有最佳参量检测器比MMSE检测器有更低的计算复杂度。 A linear muhiuser detector with parameters is presented,which diagonal loads the correlation matrix using the parameters in order to maximize the output signal interference ratio of the detector. The formula for the optimum parameter is derived and the relation among the detector with parameters, matched filter（ M F）, decorrelator, and minimum mean square error detector （MMSE） is studied. Analysis and simulation show that the estimate of the optimum parameter is effective and the MF, decorrelator, and MMSE detector can be implemented in this detector we presented by using different parameters, and the detector with optimum parameter has a lower computational complexity than the MMSE detector.
作者 张东红 廖桂生
机构地区 西安电子科技大学雷达信号处理国家重点实验室陕西
出处 《信号处理》 CSCD 北大核心 2008年第5期881-884,共4页 Journal of Signal Processing
基金 国家自然科学基金(60472097，60502045) 教育部新世纪优秀人才基金资助 陕西省教育厅基金(08jk208)
关键词 线性多用户检测 参量 对角加载 输出信噪比 计算复杂度 linear muhiuser detection parameter diagonal loading output signal interference ratio computational complexity
分类号 TN929.533 [电子电信—通信与信息系统] TN914.53 [电子电信—通信与信息系统]
  • 相关文献

参考文献9

  • 1S. Verdu. Muhiuser Detection [ M ]. Cambridge University Press, 1998.
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二级参考文献9

  • 1廖桂生，1992年
  • 2孙继广，矩阵扰动分析，1987年
  • 3廖桂生，电子科学学刊
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共引文献120

同被引文献15

  • 1VERDU S.Multiuser detection[M].Comlridge:Cambridge University Press,1998:12-77.
  • 2MOSHAVI S.Multi-user detection for DS-CDMA communications[J].IEEE Communications Mag.,1996,34(1):124-136.
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  • 5LAI Kueichiang,SHYNK J J.Performance evaluation of a generalized linear SIC for DS/CDMA signals[J].IEEE Trans.on Signal Processing,2003,51(6):1604-1614.
  • 6LAI Kueichian.Analysis of the linear SIC for DS/CDMA signals with random spreading[J].IEEE Trans.on Signal Processing,2004,52(12):3417-3428.
  • 7GUPTA A S,SINGER A.Successive interference cancellation using constellation strucuture[J].IEEE Trans.on Signal Processing,2007,55(12):5716-5730.
  • 8GUO Zihua,LETAIDF K B.An effective multiuser receiver for DS/CDMA systems[J].IEEE Trans.on Wireless Communications,2001,19(6):1019-1028.
  • 9LI Junqiang,LETAIEF K B,CAO Zhigang.A reduced-complexity maximum-likelihood method for multiuser detection[J].IEEE Trans.on Communications,2004,5(2):289-295.
  • 10MURPHY P A,GOLANBARI M,FORD G E,et al.Optimum and reduced complexity multiuser detectors for asynchronous CPM signaling[J].IEEE Trans.on Wireless Communications,2006,5(8):1959-1965.

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信号处理
2008年 第5期

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