A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network

In FSO communication links, the atmospheric turbulence has a significant impact on the quality of a laser beam where turbulence results in intensity scintillation, which can severely impair the operation of target designation and FSO communications systems. This research proposed the Double Transmis...

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Main Author:	SIMON KWANG THAI, ANG
Format:	Thesis
Language:	English English English
Published:	2024
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://ir.unimas.my/id/eprint/45197/3/DSVA%20simon.pdf http://ir.unimas.my/id/eprint/45197/4/Simon%20Ang%20Kwang%20%20%2824pgs%29.pdf http://ir.unimas.my/id/eprint/45197/5/PhD%20Thesis_Simon%20Ang%20Kwang%20Thai.pdf
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spelling	my-unimas-ir.451972024-07-11T03:59:04Z A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network 2024-07-10 SIMON KWANG THAI, ANG TK Electrical engineering. Electronics Nuclear engineering In FSO communication links, the atmospheric turbulence has a significant impact on the quality of a laser beam where turbulence results in intensity scintillation, which can severely impair the operation of target designation and FSO communications systems. This research proposed the Double Transmission Balance Receiver (DTBR), a new approach for modulation technique in free-space optical communication. By utilize the Gaussian atmospheric channel analysis is the first step method. This factor will determine the trajectory of the research study and will restrict this strategy to implementing the calculations-related research. The second method is a mathematical derivation development where the new modulation technique is compared to conventional modulation techniques. The performance evaluation will investigate signal strength, signal threshold, signal-to-noise ratio, and bit error rate. In the meantime, the third method simulates the DTBR method using the OptiSystem software. This allows for an analysis close to actual FSO conditions, which can be validated with the theoretical portion. From the result shows that analysis from effective power, in strong turbulence condition the DTBR can improve approximately 50% of power received. For bit rate analysis, it can operate at higher bit rate of 10 Gbps (STM64) with the BER is approximately at 5.91 x 10-11 as compared to conventional ASK only at 2.77x 10-4. This gives percentage improvement about 175%. Meanwhile in distance analysis, the DTBR manage to achieve BER approximately 5.51 x 10-17 while conventional only 4.89 x 10-4. Thus, contribute improvement of 13 magnitude of BER or equivalent of 325%. Therefore, via the presented analysis the new proposed is have the better performance as compare to conventional ASK technique with new threshold at level zero ‘0’. SIMON ANG KWANG THAI 2024-07 Thesis http://ir.unimas.my/id/eprint/45197/ http://ir.unimas.my/id/eprint/45197/3/DSVA%20simon.pdf text en staffonly http://ir.unimas.my/id/eprint/45197/4/Simon%20Ang%20Kwang%20%20%2824pgs%29.pdf text en public http://ir.unimas.my/id/eprint/45197/5/PhD%20Thesis_Simon%20Ang%20Kwang%20Thai.pdf text en validuser phd doctoral Universiti Malaysia Sarawak Faculty of Engineering
institution	Universiti Malaysia Sarawak
collection	UNIMAS Institutional Repository
language	English English English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering SIMON KWANG THAI, ANG A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
description	In FSO communication links, the atmospheric turbulence has a significant impact on the quality of a laser beam where turbulence results in intensity scintillation, which can severely impair the operation of target designation and FSO communications systems. This research proposed the Double Transmission Balance Receiver (DTBR), a new approach for modulation technique in free-space optical communication. By utilize the Gaussian atmospheric channel analysis is the first step method. This factor will determine the trajectory of the research study and will restrict this strategy to implementing the calculations-related research. The second method is a mathematical derivation development where the new modulation technique is compared to conventional modulation techniques. The performance evaluation will investigate signal strength, signal threshold, signal-to-noise ratio, and bit error rate. In the meantime, the third method simulates the DTBR method using the OptiSystem software. This allows for an analysis close to actual FSO conditions, which can be validated with the theoretical portion. From the result shows that analysis from effective power, in strong turbulence condition the DTBR can improve approximately 50% of power received. For bit rate analysis, it can operate at higher bit rate of 10 Gbps (STM64) with the BER is approximately at 5.91 x 10-11 as compared to conventional ASK only at 2.77x 10-4. This gives percentage improvement about 175%. Meanwhile in distance analysis, the DTBR manage to achieve BER approximately 5.51 x 10-17 while conventional only 4.89 x 10-4. Thus, contribute improvement of 13 magnitude of BER or equivalent of 325%. Therefore, via the presented analysis the new proposed is have the better performance as compare to conventional ASK technique with new threshold at level zero ‘0’.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	SIMON KWANG THAI, ANG
author_facet	SIMON KWANG THAI, ANG
author_sort	SIMON KWANG THAI, ANG
title	A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
title_short	A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
title_full	A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
title_fullStr	A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
title_full_unstemmed	A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network
title_sort	new modulation technique using double transmission in free space optical communication for access network
granting_institution	Universiti Malaysia Sarawak
granting_department	Faculty of Engineering
publishDate	2024
url	http://ir.unimas.my/id/eprint/45197/3/DSVA%20simon.pdf http://ir.unimas.my/id/eprint/45197/4/Simon%20Ang%20Kwang%20%20%2824pgs%29.pdf http://ir.unimas.my/id/eprint/45197/5/PhD%20Thesis_Simon%20Ang%20Kwang%20Thai.pdf
_version_	1804888441131892736

A New Modulation Technique Using Double Transmission In Free Space Optical Communication for Access Network

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