Adaptive Conjugate Gradient DFEs for Wideband MIMO Systems

被引：7
作者：
Lalos, Aris S. [1 ,2 ]
Kekatos, Vassilis [1 ]
Berberidis, Kostas [1 ,2 ]
机构：
[1] Univ Patras, Dept Comp Engn & Informat, Rion 26500, Greece
[2] Univ Patras, RACTI, RU8, Rion 26500, Greece
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 2009年 / 57卷 / 06期
关键词：
Adaptive equalizers; conjugate gradient methods; decision feedback equalizers; Galerkin method; MIMO systems;
D O I：
10.1109/TSP.2009.2016245
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
New adaptive equalization algorithms for wireless systems operating over wideband multiple-input multiple-output (MIMO) channels are proposed. The problem of MIMO decision feedback equalizer (DFE) design is formulated as a set of linear equations with multiple right-hand sides (RHSs) evolving in time. By applying an adaptive modified conjugate gradient algorithm, we derive an equalizer with identical convergence, improved tracking capabilities, but higher computational load as compared to the Recursive Least Squares (RLS) algorithm. To reduce its complexity, two updating strategies of the equalizer filters based on Galerkin projections are employed.
引用
收藏
页码：2406 / 2412
页数：7
相关论文
共 19 条
  • [1] The finite-length multi-input multi-output MMSE-DFE
    Al-Dhahir, N
    Sayed, AH
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2000, 48 (10) : 2921 - 2936
  • [2] [Anonymous], 2000, PRACTICAL METHODS OP
  • [3] Chanard J, 2000, NEPHROLOGIE, V21, P3
  • [4] Analysis of conjugate gradient algorithms for adaptive filtering
    Chang, PS
    Willson, AN
    [J]. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2000, 48 (02) : 409 - 418
  • [5] Feature selection and similarity analysis of crop fields for mapping organic carbon concentration in soil
    Chen, Feng
    Kissel, David E.
    West, Larry T.
    Adkins, W.
    Rickman, Doug
    Luvall, J. C.
    [J]. COMPUTERS AND ELECTRONICS IN AGRICULTURE, 2006, 54 (01) : 8 - 21
  • [6] Adaptive MBER decision feedback multiuser receivers in frequency selective fading channels
    de Lamare, RC
    Sampaio-Neto, R
    [J]. IEEE COMMUNICATIONS LETTERS, 2003, 7 (02) : 73 - 75
  • [7] Iterative layered space-time receivers for single-carrier transmission over severe time-dispersive channels
    Dinis, R
    Kalbasi, R
    Falconer, D
    Banihashemi, AH
    [J]. IEEE COMMUNICATIONS LETTERS, 2004, 8 (09) : 579 - 581
  • [8] GROH I, 2006, IEEE INT C AC SPEECH
  • [9] Hestenes M.R., 1980, CONJUGATE DIRECTION
  • [10] KEKATOS V, 2007, IEEE VEH TECHN C VTC
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