NDLI: Optimum detection threshold for free-space optical communication with atmospheric scintillation

Content Provider	IEEE Xplore Digital Library
Author	Li Fei Lu Houbing
Copyright Year	2015
Description	Author affiliation: Dept. of photoelectricity, Electron. Eng. Inst., Hefei, China (Li Fei) \|\| Dept. of Modern Phys., Univ. of Sci. & Technol. of China, Hefei, China (Lu Houbing)
Abstract	Scintillation caused by atmospheric turbulence impairs the performance of the free-space optical (FSO) communication system. Bit error rate (BER) of a FSO communication system can be improved by using an adaptive detection threshold, which is difficult to implement in real time. As a sub-optimum method, optimizing the threshold to a constant value according to statistics of parameters is proposed. Assuming multiplicative Gaussian noise and lognormal scintillation, the optimum constant threshold of a FSO communication system operating in an atmospheric turbulence channel is analyzed. The result of numerical analysis is compared with experimental data obtained in weak turbulence. Results of experiment and numerical analysis show that optimizing constant threshold is necessary and the performance degradation compared to adaptive thresholding is acceptable. The dependence of the optimum constant threshold on log amplitude variance and average received signal power is analyzed and the influence of other parameters is proved to be negligible. Based on previous analysis, a non-linear model is proposed to estimate the optimum constant threshold in practice.
Starting Page	191
Ending Page	196
File Size	548906
Page Count	6
File Format	PDF
e-ISBN	9781467374620
DOI	10.1109/ICoOM.2015.7398802
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-07-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Integrated optics Optical communications Numerical analysis Atmospheric turbulence Bit error rate Detection threshold Optical receivers Adaptive optics Optical transmitters
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in