GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin

Due to restriction of the spectrum for Earth Exploration Satellite Service (EESS) at 8.5 GHz X-Band allocation, the mission for EESS are looking higher order modulation scheme instead of traditionally phase shift keying (PSK) such as Quadrature Phase Shift Keying (QPSK), Offset Quadrature Phase Shif...

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Main Author:	Nordin @ Radin, Rasidi
Format:	Thesis
Language:	English
Published:	2013
Subjects:	QC Physics Telecommunication
Online Access:	https://ir.uitm.edu.my/id/eprint/80928/1/80928.pdf
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id	my-uitm-ir.80928
record_format	uketd_dc
spelling	my-uitm-ir.809282023-11-21T15:29:43Z GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin 2013 Nordin @ Radin, Rasidi QC Physics Telecommunication Due to restriction of the spectrum for Earth Exploration Satellite Service (EESS) at 8.5 GHz X-Band allocation, the mission for EESS are looking higher order modulation scheme instead of traditionally phase shift keying (PSK) such as Quadrature Phase Shift Keying (QPSK), Offset Quadrature Phase Shift Keying (OQPSK) and 8-PSK. The main problems with the current modulation are the Bandwidth efficiency and the Inter-symbol Interference Tolerance. The objectives of this research are to analyze Gaussian Minimum Shift Keying (GMSK) perform in EESS, to identify the best BT value for better GMSK performance, to analyze the filtering effect to bandwidth (BW) in GMSK, to simulate GMSK in satellite communication using Matlab and to compare the performance of GMSK with the OQPSK filtering with square root raised cosine (RRC) in satellite communication. The methodology used in this study is identify the current OQPSK with RRC filtering method used such as the roll-off factor best value and its Bit Error Rate performance, designed and simulate the GMSK modulation by using the same method used in OQPSK in Matlab and finally compare the simulation result of GMSK with the OQPSK filtered with RRC. Besides, the BER performance is checked using the BER Tools in Matlab. The result shows that the GMSK performance is almost same as OQPSK in term of bit error rate (BER). However, the GMSK performance in terms of bandwidth efficiency is better compare to the OQPSK. Moreover, spectrum density shows that the GMSK gives constant sidelobe power. In conclusions, the GMSK could be used at lower data rates with a performance almost similar to the OQPSK filtered with RRC. 2013 Thesis https://ir.uitm.edu.my/id/eprint/80928/ https://ir.uitm.edu.my/id/eprint/80928/1/80928.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Electrical Engineering Ya'acob, Norsuzila
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Ya'acob, Norsuzila
topic	QC Physics Telecommunication
spellingShingle	QC Physics Telecommunication Nordin @ Radin, Rasidi GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
description	Due to restriction of the spectrum for Earth Exploration Satellite Service (EESS) at 8.5 GHz X-Band allocation, the mission for EESS are looking higher order modulation scheme instead of traditionally phase shift keying (PSK) such as Quadrature Phase Shift Keying (QPSK), Offset Quadrature Phase Shift Keying (OQPSK) and 8-PSK. The main problems with the current modulation are the Bandwidth efficiency and the Inter-symbol Interference Tolerance. The objectives of this research are to analyze Gaussian Minimum Shift Keying (GMSK) perform in EESS, to identify the best BT value for better GMSK performance, to analyze the filtering effect to bandwidth (BW) in GMSK, to simulate GMSK in satellite communication using Matlab and to compare the performance of GMSK with the OQPSK filtering with square root raised cosine (RRC) in satellite communication. The methodology used in this study is identify the current OQPSK with RRC filtering method used such as the roll-off factor best value and its Bit Error Rate performance, designed and simulate the GMSK modulation by using the same method used in OQPSK in Matlab and finally compare the simulation result of GMSK with the OQPSK filtered with RRC. Besides, the BER performance is checked using the BER Tools in Matlab. The result shows that the GMSK performance is almost same as OQPSK in term of bit error rate (BER). However, the GMSK performance in terms of bandwidth efficiency is better compare to the OQPSK. Moreover, spectrum density shows that the GMSK gives constant sidelobe power. In conclusions, the GMSK could be used at lower data rates with a performance almost similar to the OQPSK filtered with RRC.
format	Thesis
qualification_level	Master's degree
author	Nordin @ Radin, Rasidi
author_facet	Nordin @ Radin, Rasidi
author_sort	Nordin @ Radin, Rasidi
title	GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
title_short	GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
title_full	GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
title_fullStr	GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
title_full_unstemmed	GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin
title_sort	gmsk modulator implementation for earth explorations satellite service / rasidi nordin @ radin
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Electrical Engineering
publishDate	2013
url	https://ir.uitm.edu.my/id/eprint/80928/1/80928.pdf
_version_	1783736317082861568

GMSK modulator implementation for earth explorations satellite service / Rasidi Nordin @ Radin

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