基于准正交编码的MIMO空间光通信技术研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Research on MIMO Space Optical Communication Based on Quasi Orthogonal Encoding Technology 作者：王博钰 ; 宫玉琳 ; 张静鹤 英文作者：WANG Boyu;GONG Yulin;ZHANG Jinghe;Personnel Division,Changchun University of Science and Technology;School of Electronics and Information Engineering,Changchun University of Science and Technology;Aviation University of Air Force; 关键词：分集技术 ; MIMO ; 准正交空时编码 ; 误码性能 英文关键词：diversity technology;;multiple input multiple output;;quasi-orthogonal space-time block codes;;BER 中文刊名：CGJM 英文刊名：Journal of Changchun University of Science and Technology(Natural Science Edition) 机构：长春理工大学人事处;长春理工大学电子信息工程学院;空军航空大学; 出版日期：2015-12-15 出版单位：长春理工大学学报(自然科学版) 年：2015 期：v.38 语种：中文; 页：CGJM201506009 页数：4 CN：06 ISSN：22-1364/TH 分类号：42-45

摘要

由于自由空间光通信严重受到大气湍流引起的光强起伏,光束漂移等问题对通信性能的影响,本文研究了大气信道特性并分析了空时分组编码方案,采用MIMO技术提高自由空间光通信系统的性能。基于MIMO技术下的准正交编码方案不仅可以增强信道的抗衰落能力而且可以提供一定的分集增益和编码增益。在Matlab平台下使用蒙特卡罗模拟方法,对系统的信道容量和误码率进行数值研究。仿真结果表明:采用MIMO技术能够提高信道容量,有效改善误码性能,而且分集数越高,通信质量越好。
        Due to the free space optical communication severely affected by atmospheric turbulence caused by intensity fluctuation,beam drift,this paper studies the characteristics of atmospheric channel and analyses the space-time block coding scheme,the MIMO technology can improves the performance of free space optical communication system. The orthogonal coding scheme based on MIMO technology can not only enhance the channel fading resistance and can provide diversity gain and coding gain. Under the MATLAB platform using monte carlo simulation method,the channel capacity and error rate of system are researched. The simulation results show that the MIMO technology can increase the channel capacity;and effectively improve BER performance;the higher the diversity number,the better the communication quality.

引文

[1]Lee W.Mobile Communications engineering[J].New York:Mc Graw-Hill,1982,8(9):252-256.
    [2]彭林.第三代移动通信技术[M].北京:电子工业出版社,2003.
    [3]梁学俊.多用户分集MIMO系统中的信道反馈研究[D].武汉:华中科技大学,2008.
    [4]王惠琴,柯熙政,赵黎.基于正交空时块编码的MIMO自由空间光通信[J].中国科学(F辑:信息科学),2009,10(8):896-902.