ANALYTICAL TIME-DOMAIN MODEL FOR RADIO OVER FREE SPACE OPTICAL MILITARY COMMUNICATION SYSTEMS UNDER TURBULENCE CHANNELS

被引：0
作者：
Lim, Wansu [1 ]
Cho, Tae-Sik [1 ]
Kim, Kiseon [1 ]
Yun, Changho [2 ]
机构：
[1] Gwangju Inst Sci & Technol, Sch Informat & Mechatron, Kwangju 500712, South Korea
[2] Korea Ocean Res & Dev Inst, Ansan 425600, South Korea
来源：
MILCOM 2009 - 2009 IEEE MILITARY COMMUNICATIONS CONFERENCE, VOLS 1-4 | 2009年
关键词：
PHASE NOISE; PERFORMANCE; LASER; LINKS;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, an analytical time-domain model is presented to analyze the radio over free space optical (RoFSO) systems under two turbulence channels, the log-normal and the exponential channel. This analytical model uses general cases of a dual-drive Mach-Zehnder modulator (DD-MZM) and photodetector (PD) for typical optical double sideband (ODSB) and single sideband (OSSB) signals under turbulence channels. This results in output current after a PD as a function of the summation of each frequency component in time domain. Additionally, we derive a closed-form average BER performance under turbulence channels. The numerical result shows that as the scintillation index increases from 0.25 to 0.75 under the log-normal channel, the average BER decreases almost 5.6 dB at the signal power of -30 dBm for ODSB.
引用
收藏
页码：2682 / +
页数：2
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