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

页码：2682 / +

页数：2

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