利用最大信号泄露噪声比设计多用户VBLAST系统下行链路

王强; 杨冰; 陶小峰; 张平

doi:10.3724/SP.J.1146.2007.00938

利用最大信号泄露噪声比设计多用户VBLAST系统下行链路

doi: 10.3724/SP.J.1146.2007.00938

基金项目:

国家863计划项目(2006AA01Z260)和国家自然科学基金重大项目(60496312)资助课题

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出版历程
- 收稿日期: 2007-06-11
- 修回日期: 2007-10-16
- 刊出日期: 2008-09-19

MU-VBLAST Design for the Downlink Using MSLNR

摘要

摘要: 该文针对多用户MIMO系统提出利用最大信号泄漏信噪比准则设计多用户VBLAST下行链路的方法。相对于以多用户系统中广泛关注的块对角化方法设计多用户VBLAST下行链路，所提方法性能有较大的提高。另外，相对于块对角化方法对天线数目的约束，该文所提方法在不满足块对角化的条件下仍能拥有不错的性能。仿真表明该方法拥有优异的性能。
- 块对角化 /
- 共道干扰 /
- 信号泄漏噪声比 /
- VBLAST
Abstract: Maximize signal-to-leakage ratio strategy is proposed in multi-user multi input multi output system, which is used to design MU-VBLAST downlink. The performance of the strategy proposed in the paper exceeds that of Block Diagonalization (BD) method which is paid wide attention in MU-MIMO systems; otherwise, the MSLNR strategy is found to relax the condition on the number of transmit-receive antennas in comparison to BD method. Simulation results illustrate the resulting system performance.
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参考文献(1)

[1] 张平. Beyond 3G 移动通信系统关键技术. 北京邮电大学学报,2002, 25(3): 1-6.Zhang Ping. Some research issues for Beyond 3G mobilesystem. Journal of Beijing University of Posts andTelecommunications, 2002, 25(3): 1-6. [2] 陶小峰，秦海燕，温蕾等. 频率选择性信道下V-BLAST 信道矩阵的建模. 北京邮电大学学报, 2004, 27(2): 84-87.Tao Xiao-feng, Qin Hai-yan, and Wen Lei, et al.. Channelmodeling of layered space-time code under frequencyselectivefading channel. Journal of Beijing University ofPosts and Telecommunications, 2004, 27(2): 84-87. [3] Foschini G J. Layered space-time architecture for wirelesscommunication in a fading environment when usingmulti-element antennas[J].Bell Labs Technical Journal.1996,1(2):41-59 [4] Wong K K, Murch R D, Cheng R S, and Letaief K B.Optimizing the spectral efficiency of multiuser MIMO smartntenna systems. Proc. IEEE WCNC 2000, Chicago, USA,Sept. 2000, vol.1: 426-430. [5] Choi R L, Letaief K B, and Murch R D. MIMO CDMAantenna systems. Proc. IEEE ICC 2000, New Orleans, USA,June 2000, Vol.2: 990-994. [6] Palomar D P, Cioffi J M, and Lagunas M A. Joint Tx-Rxbeamforming design for multicarrier MIMO channels: Aunified framework for convex optimization[J].IEEE Trans. onSignal Processing.2003, 51(9):2381-2401 [7] Bourdoux A and Khaled N. Joint TX-RX optimization forMIMO-SDMA based on a null-space constraint. Proc.VTC2002-Fall, Vancouver, Canada, Sept. 2002: 171-174. [8] Tarighat A, Sadek M, and Sayed A H. A multi userbeamforming scheme for downlink MIMO channels based onmaximizing signal-to-leakage ratios. Proc. IEEE ICASSP2005, Philadelphia, PA, Mar. 2005, Vol. 3: 1129-1132. [9] Choi R L and Murch R D. A transmit preprocessingtechnique for multiuser MIMO systems using adecomposition approach. IEEE Trans. on WirelessCommunications, 2004, 3(1): 20-24. [10] Larsson E G and Stoica P. Space-Time Block Coding forWireless Communications. Cambridge, UK, Cambridge Univ.Press, 2003: 79-82.

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