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多用戶MIMO系統(tǒng)下行鏈路的空分多址發(fā)送預(yù)濾波技術(shù)研究

王亞峰,  張峻峰,  章健,  楊大成

王亞峰, 張峻峰, 章健, 楊大成. 多用戶MIMO系統(tǒng)下行鏈路的空分多址發(fā)送預(yù)濾波技術(shù)研究[J]. 電子與信息學(xué)報, 2006, 28(4): 732-735.
引用本文: 王亞峰, 張峻峰, 章健, 楊大成. 多用戶MIMO系統(tǒng)下行鏈路的空分多址發(fā)送預(yù)濾波技術(shù)研究[J]. 電子與信息學(xué)報, 2006, 28(4): 732-735.
Wang Ya-feng, Zhang Jun-feng, Zhang Jian, Yang Da-cheng. A Transmit Preprocessing Technique for Downlink SDMA in Multi-user MIMO Channels[J]. Journal of Electronics & Information Technology, 2006, 28(4): 732-735.
Citation: Wang Ya-feng, Zhang Jun-feng, Zhang Jian, Yang Da-cheng. A Transmit Preprocessing Technique for Downlink SDMA in Multi-user MIMO Channels[J]. Journal of Electronics & Information Technology, 2006, 28(4): 732-735.

多用戶MIMO系統(tǒng)下行鏈路的空分多址發(fā)送預(yù)濾波技術(shù)研究

A Transmit Preprocessing Technique for Downlink SDMA in Multi-user MIMO Channels

  • 摘要: 該文提出了一種用于多用戶MIMO系統(tǒng)下行鏈路的空分多址發(fā)送預(yù)濾波技術(shù)，通過在目前已有的基于塊對角化的聯(lián)合TX-RX MMSE算法的基礎(chǔ)上，增加新的約束條件，使等效信道由塊對角化矩陣變?yōu)橥耆珜腔仃?，就可以在發(fā)送端同時將多用戶干擾(MUI)和用戶內(nèi)部各根天線之間的干擾完全消除。改進后的算法除了具有基于塊對角化的算法的特點外，還具有更切實可行，簡化接收機設(shè)計的優(yōu)點。
    Abstract: A transmit preprocessing technique for downlink spatial multiplexing in multi-user MIMO channels is proposed in this paper. Through adding additional constraint to the joint TX-RX MMSE optimization scheme the equivalent channel can be changed from block-diagonalization to complete diagonalization. Thus both MUI (Multi-User Interference) and per-user multi-stream interference can be canceled simultaneously. Besides the general advantage of the algorithms based on block-diagonalization, the modified algorithm is much more feasible and has the advantage of simplifying the receivers.
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  • Vandenameele P, L Van der Perre, Engels, M et al.. A combined OFDM/SDMA approach. Journal on Selected Areas in Communications, 2000, 18(11): 23122321. .[2]Thoen S, L Van der Perre, Engels, M et al.. Adaptive loading for OFDM/SDMA-based wireless networks. IEEE Trans. on Communications, 2002, 50(11): 17981810. .[3]Bourdoux A, Khaled N. Joint TX-RX optimization for MIMO-SDMA based on a null-space constraint. VTC 2002-Fall, Vancouver, Canada, Sept. 2002: 171174. .[4]Choi L, Murch R D. A transmit preprocessing technique for Multi-user MIMO systems using a decomposition approach[J].IEEE Trans. on Wireless Communications.2004, 3(1):20-[5]Spencer Q H, Swindlehurst A L, Haardt M. Zero-forcing methods for downlink spatial multiplexing in multi-user MIMO channels[J].IEEE Trans. on Signal Processing.2004, 52(2):461-[6]Wong Kai-Kit. Diversity achievable by joint channel diagonalization through multi-user MIMO smart antennas. GLOBECOM '02, Taipei, Nov. 2002: 1721. .[7]Sampath H, Stoica P, Paulraj A. Joint transmit and receive optimization for high data rate wireless communication using multiple antennas. Proceedings of Asilomar 1999, Monterey, California, June 1999: 215.219.[8]Sampath H, Stoica P, Paulraj A. Generalized linear precoder and decoder design for MIMO channels using the weighted MMSE criterion[J].IEEE Trans. on Communications.2001, 49(12):2198-[9]Derryberry R T. A MIMO channel model for 1x EV DV evaluation, 3GPP2, TSG-C WG5 Evaluation Ad Hoc Contribution, June 2001.[10]Pedersen K I, Andersen J B, Kermoal J P, et al.. A stochastic MIMO radio channel model for evaluation of space-time coding algorithm, VTC 2000 Fall, Boston, United States, September 2000: 893.897.
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出版歷程
  • 收稿日期:  2004-09-27
  • 修回日期:  2005-04-05
  • 刊出日期:  2006-04-19

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