期刊文献+

异步MIMO-OFDM中基于预处理矩阵的迭代检测算法 被引量:3

Pre-processing Matrix Based Iterative Detection Algorithm in Asynchronous MIMO-OFDM
下载PDF
导出
摘要 针对异步发射MIMO-OFDM链路,论文提出了一种基于预处理矩阵的迭代并行多天线干扰消除方法。该方法在信号发射前,通过预处理矩阵将信号扩展到所有子载波上,从而降低部分子载波深衰落对扩展前原始信号的影响。在接收端,上次迭代的判决错误在干扰重建时被预处理矩阵扩展,缓解了迭代干扰抵消过程中的误差传播。仿真结果表明,在4发2收场景下,误码率为10-3时,5次迭代后信噪比相比于传统的迭代并行多天线干扰消除方法改善约4.5 dB。 In asynchronous MIMO-OFDM over the selective Rayleigh fading channel,an iterative parallel multiantenna interference cancellation algorithm based on pre-processing matrix is proposed.Before the signal is transmitted,the symbols are spread over all the subcarriers,which relieve the influence of deep fading in part of the subcarriers.In the receiver,the wrong decision value of last iteration is spread by the pre-processing matrix,which decrease the error propagation in iteration processing.The performance improvement is verified by simulation, when there are 4 transmitters 2 receivers and the Bit Error Rate(BER) is 3 10-,SNR is improved about 4.5 dB compared with the traditional iterative parallel interference cancellation algorithm.
出处 《电子与信息学报》 EI CSCD 北大核心 2012年第4期795-801,共7页 Journal of Electronics & Information Technology
基金 国家自然科学基金(60902027 60832007 60901018 U1035002/L05 61001087 61101034) 国家科技重大专项(2010ZX03003-002-01 2011ZX03001-006-01 2010ZX03007-003) 和中央高校基金(ZYGX2010J012 ZYGX2009J008 ZYGX2009J010)资助课题
关键词 无线通信 预处理矩阵 异步MIMO-OFDM 迭代 误码率 Wireless communication Pre-processing matrix Asynchronous MIMO-OFDM Iteration Bit Error Rate(BER)
  • 相关文献

参考文献1

二级参考文献12

  • 1Zhang Ping, Tao Xiaofeng, and Zhang Jianhua, et al.. The vision from FUTURE beyond 3G TDD[J]. IEEE Communications Magazine, 2005, 43(1): 38-44.
  • 2Haykin S, Sellathurai M, and de Jong Y, et al.. Turbo-MIMO for wireless communications[J]. IEEE Communications Magazine, 2004, 42(10): 48-53.
  • 3Studer C, Burg A, and Bolcskei H. Soft-output sphere decoding: algorithms and VLSI implementation [J]. IEEE Journal of Selected Areas in Communications, 2008, 26(2): 290-300.
  • 4Barbero L G and Thompson J S. Extending a fixed- complexity sphere decoder to obtain likelihood information for Turbo-MIMO systems[J]. IEEE Transactions on Vehicular Technology, 2008, 57(5): 2804-2813.
  • 5Wang L, Xu L, and Chen S, et al.. MMSE soft-interference -cancellation aided iterative center-shifting K-best sphere detection for MIMO channels[C}. Proceedings of IEEE ICC, Beijing~ China, May, 2008: 3819-3823.
  • 6Hagenauer J and Kuhn C. The list-sequential(LISS) algorithm and its application [J]. IEEE Transactions on Communications, 2007, 55(5): 918-928.
  • 7de Jong Y and Willink T J. Iterative tree search detection for MIMO wireless systems[J]. IEEE Transactions on Communications, 2005, 53(6): 930-935.
  • 8Wang R and Giannakis G B. Approaching MIMO channel capacity with soft detection based on hard sphere decoding[J].IEEE Transactions on Communications, 2006, 54(4): 587-590.
  • 9Zimmermann E and Fettweis G. Unbiased MMSE tree search MIMO detection[C]. Proceedings of International Symposium WPMC, San Diego, USA, September, 2006: 17-20.
  • 10Poor H V and Verdu S. Probability of error in MMSE multiuser detection[J]. IEEE Transactions on Information Theory, 1997, 43(3): 858-871.

同被引文献19

  • 1陈强,杨霄鹏,达新宇,欧阳超.一种快速收敛的航空信道载波恢复判决反馈盲均衡算法[J].中南大学学报(自然科学版),2013,44(9):3707-3712. 被引量:7
  • 2Helmut Bolcskei,A J Paulraj.Multiple - Input Multiple - Output(MIMO)Wireless Systems[ J ].IEEE Select Areas Communication,2003,21(4),281 - 302.
  • 3Bo Xu,Zhiping Peng,Gaoang Wang,Jing Dai.An hn- proved Quantum - inspired Multi - objective Evolutionary Algorithm Based on Cloud Theory[ J ].Journal of Computational Information Systems,2012,8(5):2017 - 2023.
  • 4Lin H J, Tang Y X. Optimum linear detection of a modified V BLAST system with delay offsets[C]//Proc, of the IEEE Vehcular Technology Conference, 2008 : 1 - 4.
  • 5Mancho C N, Denreire L, Mogensen P. On the design of a MIMO-SIC receiver for LTE downlink[C]//Proc, of the 68th Vehicular Tech- nology Conference, 2008 : 1 - 5.
  • 6Lin H J, Tang Y X, Guan L. Ordered successive interference cancellation (OSIC) in V-BLAST systems with asynchronous transmission mode [ J ]. Wireless Personal Communications, 2010,60(2) : 263- 275.
  • 7Khalighi M, Boutros J, Helard J. Data aided channel estimation for Turbo-PIC MIMO detector[J]. IEEE Communications Let- ters, 2006,10 (5) :350-352.
  • 8Volker K. Combined MMSE-PIC in coded OFDM-CDMA sys- tems[C] // Proc. of the Global Telecommunications Conference, 2001:231 - 235.
  • 9Gui B, Qu D M. VBLAST-OFDM system with linear constella- tion precoding[C]//Proc, of the Vehicular Technology Con- ference, 2004:733 - 737.
  • 10Ghadrdan S, Salari S, Ahmadian M. Joint blind channel esti- mation for MIMO OFDM systems via non-redundant linear pre- coding[C]//Proc, of the International Conference on Commu- nications and Information Technology, 2011 : 59 - 63.

引证文献3

二级引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部