Enhanced Performance of FSO Link Using OFDM and Comparison with Traditional TDM-FSO Link

被引：0
|
作者：
Kumar, Pravindra [1 ]
Srivastava, Anand [2 ]
机构：
[1] Indian Inst Technol Mandi, Sch Comp & Elect Engn, Mandi 175001, HP, India
[2] Indraprastha Inst Informat Technol Delhi, Dept Elect & Commun Engn, New Delhi 110020, India
来源：
2015 IEEE INTERNATIONAL BROADBAND AND PHOTONICS CONFERENCE (IBP) | 2015年
关键词：
TDM-FSO; OFDM-FSO; Gamma-Gamma distribution; ATMOSPHERIC-TURBULENCE; FREE-SPACE; SIGNALS; ROFSO;
D O I：
暂无
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Free space optical (FSO) communication systems with its high data rate, capacity same as optical fiber and secure communication over unlicensed spectrum have become a promising technology where the installation of optical fiber is not possible. However, bit-error-rate (BER) performance of FSO link depends on the atmospheric conditions and turbulence strength. In this paper, the performance of intensity modulation/direct detection-time division multiplexed-FSO (IM/DD-TDM-FSO) link and IM/DD-orthogonal frequency division multiplexed-FSO (IM/DD-OFDM-FSO) link are analytically compared. BER is expressed assuming the turbulence as Gamma-Gamma distribution. At BER of 10(-3), there is 14.7 dB gain in signal-to-noise ratio (SNR) and 7.2 dB improvement in receiver sensitivity with OFDM-FSO link as compared to traditional TDM-FSO link.
引用
收藏
页码：70 / 75
页数：6
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