[1]李正权,沈连丰,许波.基于四元素准正交设计的空时分组码[J].东南大学学报(自然科学版),2009,39(2):191-196.[doi:10.3969/j.issn.1001-0505.2009.02.001]
 Li Zhengquan,Shen Lianfeng,Xu Bo.Space time block code based on quaternion quasi-orthogonal design[J].Journal of Southeast University (Natural Science Edition),2009,39(2):191-196.[doi:10.3969/j.issn.1001-0505.2009.02.001]
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基于四元素准正交设计的空时分组码()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
39
期数:
2009年第2期
页码:
191-196
栏目:
信息与通信工程
出版日期:
2009-03-20

文章信息/Info

Title:
Space time block code based on quaternion quasi-orthogonal design
作者:
李正权12 沈连丰1 许波3
1 东南大学移动通信国家重点实验室, 南京 210096; 2 扬州大学信息工程学院, 扬州 225009; 3 解放军理工大学通信工程学院, 南京 210018
Author(s):
Li Zhengquan12 Shen Lianfeng1 Xu Bo3
1 National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
2 College of Information Engineering, Yangzhou University, Yangzhou 225009, China
3 Institute of Communications Engineering, PLA University of Science and Technology, Nanjing 210018, China
关键词:
准正交设计 空时分组码 误码率 最大似然译码
Keywords:
quasi-orthogonal design space time block code bit error rate maximum likelihood decoding
分类号:
TN911
DOI:
10.3969/j.issn.1001-0505.2009.02.001
摘要:
提出了一种基于四元素准正交设计的空时分组码,该种码满足准正交设计关系,可以通过极化天线进行满码率发射和接收.首先建立了信道模型,然后设计出发射天线数为4的四元素准正交空时分组码,采用快速最大似然译码算法进行译码,最后将其与天线数为4的传统准正交设计空时分组码分别进行了性能仿真.结果表明,所设计的四元素准正交设计空时分组码在不增加发射天线和接收天线的情况下,可以降低系统误码率,提高系统性能.分别采用BPSK,QPSK和8PSK,当SNR=10 dB时,新码的误码率比准正交码分别降低0.5~1个数量级,而在SNR=15 dB时,则分别降低约2个数量级.
Abstract:
A new kind of space time block code based on quaternion quasi-orthogonal design is introduced in this paper. The new code can be transmitted and received through dual-polarized antennas with full transmission rate. The channel model is formulated firstly, then this kind of space time block code for four transmit antennas is designed, and fast maximum likelihood sequence decoding method is adopted. Finally the new code is compared with the quasi-orthogonal space time block code for 4 transmit antennas. The simulation results show that the new code can decrease the bit error rate and improve the system performance with the same transmit and receive antennas. When SNR=10 dB, the bit error rates of the new codes are decreased about 0.5 to 1 order of magnitude compared with that of the old code for BPSK,QPSK and 8PSK, respectively. While SNR=15 dB, the bit error rates of the new codes are decreased about 2 orders of magnitude.

参考文献/References:

[1] 哈米德·贾法哈尼.空时编码的理论与实践[M].任品毅,译.西安:西安交通大学出版社,2007.
[2] Jafarkhani H.A quasi-orthogonal space-time block code[J].IEEE Trans on Communications,2001,49(1):1-4.
[3] Su W,Xia X G.Signal constellations for quasi-orthogonal space time block codes with full diversity[J].IEEE Trans Inform Theory,2004,50(10):2331-2347.
[4] Zhu Y,Jafarkhani H.Differential modulation based on quasi-orthogonal codes[J].IEEE Trans on Wireless Communications,2005,4(6):3005-3017.
[5] Song L Y,Burr A G.Differential quasi-orthogonal space-time block codes with full transmit diversity[C] //IEEE 16th International Symposium on Personal,Indoor and Mobile Radio Communications.Berlin,Germany,2005:6-10.
[6] Seberry J,Finlayson K,Wysocki T A,et al.The theory of quaternion orthogonal designs[J].IEEE Trans on Signaling Processing,2008,56(1):256-265.
[7] Yang Heng,Zhang Xianda.A fast maximum likelihood sequence decoding method for multicarrier DS-CDMA using frequency spread coding[J].IEEE Trans Wireless Communications,2004,3(3):770-780.
[8] 张贤达.矩阵分析与应用[M].北京:清华大学出版社,2004.
[9] Li Zhengquan,Wang Zigang.A space time block codes from quaternion quasi-orthogonal design[C] //IEEE the 4th International Conference on Wireless Communications,Networking and Mobile Computing.Dalian,China,2008:154-156.
[10] Tarokh V,Jafarkhani H,Calderbank A R.Space-time block codes from orthogonal designs[J]. IEEE Trans Inf Theory,1999,45(5):1456-1467.
[11] Alamouti S M.A simple transmitter diversity scheme for wireless communications[J].IEEE J Select Areas Commun,1998,16(8):1451-1458.

备注/Memo

备注/Memo:
作者简介: 李正权(1976—),男,博士,副教授; 沈连丰(联系人),男,教授,博士生导师,lfshen@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2007CB310606)、国家高技术研究发展计划(863计划)资助项目(2008AA01Z205)、东南大学移动通信国家重点实验室自主研究课题资助项目(2008A08)、南京市科技发展计划资金资助项目(200701084)、江苏省高校自然科学基础资助项目(07KJD510247)、中国博士后科学基金资助项目(20080441016).
引文格式: 李正权,沈连丰,许波.基于四元素准正交设计的空时分组码[J].东南大学学报:自然科学版,2009,39(2):191-196.
更新日期/Last Update: 2009-03-20