BER performance of layered spacetime code in FSO

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	BER performance of layered spacetime code in FSO
	Cao, Minghua1 ; Wang, Huiqin1 ; Huang, Rui1 ; Lei, Yiyan 2; Chen, Haiyan1
	2012-07-01
发表期刊	Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering
ISSN	10072276
卷号	41 期号:7 页码:1842-1847
摘要	The spectrum effectiveness of layered space-time code (BLAST) is very high, which enables it to improve the information transmittance speed in free space optical communication systems. But it improves BER contemporarily, which affects the system reliability. After the model of the MIMO systems was proposed in turbulence channel, the decoding of BLAST was advised using serial interference cancellation(SIC). Besides, its nonmaximum likelihood decision rule and BER performance were analyzed, and its BER was compared with linear decode algorithms and maximum likelihood (ML) decoding algorithm based on Q-ray pulse position modulation (Q-PPM). At last, the feasibility of the technique was proved by simulation analysis. The results indicate that the error performance of SIC decoding algorithm is inferior to the ML decoding algorithm's, but it is superior to the linear decoding algorithm. In a 4 × 4 MIMO system, the ML and MMSE-SIC decode algorithm has improved by 14.5 dB and 7 dB respectively compared with MMSE algorithm when BER is 2 × 10-2. The experimental results accord with theoretical analysis.
关键词	Decoding Maximum likelihood estimation MIMO systems Optical communication Pulse position modulation Free Space Optical communication Free space optical communication systems Layered space-time Layered spacetime codes (BLAST) Maximum-likelihood decoding algorithms Q-ray pulse position modulations (Q-PPM) Serial interference cancellations Simulation analysis
收录类别	EI
语种	中文
出版者	Chinese Society of Astronautics
EI入藏号	20123915473059
EI主题词	Space time codes
EI分类号	717.1 Optical Communication Systems - 723.2 Data Processing and Image Processing - 922 Statistical Methods
来源库	Compendex
分类代码	717.1 Optical Communication Systems - 723.2 Data Processing and Image Processing - 922 Statistical Methods
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/111368
专题	计算机与通信学院电气工程与信息工程学院
作者单位	1.College of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China; 2.Experimental Center, Xi'an Communication Institute of PLA, Xi'an 710106, China
第一作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Cao, Minghua,Wang, Huiqin,Huang, Rui,et al. BER performance of layered spacetime code in FSO[J]. Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,2012,41(7):1842-1847.
APA	Cao, Minghua,Wang, Huiqin,Huang, Rui,Lei, Yiyan,&Chen, Haiyan.(2012).BER performance of layered spacetime code in FSO.Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering,41(7),1842-1847.
MLA	Cao, Minghua,et al."BER performance of layered spacetime code in FSO".Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering 41.7(2012):1842-1847.