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基于准正交空时码的最优线性预编码矩阵设计 被引量：3

Optimal Linear Precoding Design Based on the Quasi-Orthogonal STBC
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摘要 为了充分利用信道信息改善应用准正交空时分组码的MIMO系统的性能,该文提出了将预编码矩阵和准正交空时分组码相结合的发射机制。信息在经过准正交空时分组码编码后,要经过线性预编码矩阵进行处理,才可以从发射天线发送。文中的预编码矩阵设计利用了MIMO信道的非零均值矩阵和相关矩阵,并采用成对差错概率作为其最优设计准则。仿真结果表明,相对于未经过预编码矩阵的系统,新系统的误码率性能有明显改善。 For improving the performance of MIMO system with quasi-orthogonal STBC exploiting the channel knowledge, a new transmitter scheme combining the linear precoding matrix is proposed. Before sending out from the transmit antennas, the information is sent into the space-time encoder, then is processed by a precoder matrix. Exploiting the channel correlation and mean, the linear precoder is designed based on the Pair-wise Error Probability （PEP）. Simulation results show that significant gain in BER of the new system can be obtained compared with the unprecoded system.
作者 刘雪芳 傅丰林
机构地区 西安电子科技大学通信工程学院
出处 《电子与信息学报》 EI CSCD 北大核心 2008年第2期401-403,共3页 Journal of Electronics & Information Technology
关键词 准正交空时分组码 线性预编码矩阵 信道相关 成对差错概率 Quasi-Orthogonal STBC（QOSTBC） Linear precoding matrix Channel correlation Pair-wise Error Probability （PEP）
分类号 TN911.22 [电子电信—通信与信息系统]
  • 相关文献

参考文献5

  • 1Mai Vu and Arogyaswami Paulraj. Linear precoding for MIMO channels with non-zero mean and transmit correlation in orthogonal space-time coded systems. IEEE 60th Vehicular Technology Conference, Los Angeles, 2004, 4: 2503-2507.
  • 2Dalton L A and Georghiades C N. A full-rate, full-diversity four-antenna quasi-orthogonal space-time block code. IEEE Trans. on Wireless Communications, 2005, 4(2): 363-366.
  • 3Su Wei-feng and Xia Xiang-gen. Signal constellations for quasi-orthogonal space-time block codes with full diversity. IEEE Trans. on Information Theory, 2004, 50(10): 2331-2347.
  • 4Shiu D, Foschini J G, Galls M, and Kahn J M. Fading correlation and its effect on the capacity of multi-element antenna systems. IEEE Trans. on Commun., 2000, 48(3): 502-513.
  • 5Horn R A and Johnson C R. Matrix Analysis, Cambridge University Press, 1985, Chapter 3.

同被引文献18

  • 1VU M,PAULRA A.Linear pre-coding for MIMO channels with non-zero mean and transmit correlation in orthogonal space-time coded systems[C]//IEEE 60th Vehicular Technology Conference.Los Angeles,USA,2004:2503-2507.
  • 2TAROKN V,JAFARKHANI H,CALDERBANK A R.Space-time block codes from orthogonal designs[J].IEEE Trans Inform Theory,1999,45(6):1456-1467.
  • 3Lei Guowei, Zhuang Mingjie. Performance Analysis of Quasi-orthogonal STBC via Antenna Selection[C]// ICCS2008. 2008, 1:670-673.
  • 4V Tarokh, H Jafarkhani H. Space-time Block Codes from Orthogonal Design[J]. IEEE Transaction on Information Theory, 1999,45(5) : 1456-1467.
  • 5Jafarkhan H. A quasi-orthogonal space-time block code [J ]. IEEE Transactions on Communication, 2001, 49(1):1-4.
  • 6Badic B, Fuxjaeger P, Weinrichter H. Performance of a quasi-orthogonal space-time code with antenna selection[J]. Electronics Letters, 2004, 40 (20) : 1282- 1284.
  • 7ALAMOUTI S M. A simple transmit diversity technique for wireless communications[ J ]. IEEE Journal on Select Areas in Communications, 1998, 16(8) : 1451-1458.
  • 8SHARMA N, PAPADIAS C B. Improved quasi-orthogonal codes through constellation rotation [ J ]. IEEE Trans Wireless Commun,2004,51 (3):332-335.
  • 9SU Weifeng. Signal constellations for quasi-orthogonal space-time block codes with full diversity[ J]. IEEE Transactions on Information Theory,2004 ,50(10) :2331-2347.
  • 10TAROKH V, JAFARKHANI H. Space-time block codes from orthogonal designs [ J ]. IEEE Trans Inform Theory, 1999, 45(5) : 1456-1467.

引证文献3

二级引证文献2

电子与信息学报
2008年 第2期

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