Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio

With the rapid growth of multimedia applications over the wireless Internet, the demand for radio spectral resources has increased significantly. Referring to frequency spectrum allocations in Malaysia, major parts of spectrum have been assigned for government and commercial use. Despite the spectru...

Full description

Saved in:

Bibliographic Details
Main Author:	'Adli Husin, Hilmi Mujahid
Format:	Thesis
Language:	English
Published:	2016
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/60562/1/HilmiMujahidAdliMFKE2016.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.60562
record_format	uketd_dc
spelling	my-utm-ep.605622017-10-08T08:00:23Z Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio 2016-01 'Adli Husin, Hilmi Mujahid TK Electrical engineering. Electronics Nuclear engineering With the rapid growth of multimedia applications over the wireless Internet, the demand for radio spectral resources has increased significantly. Referring to frequency spectrum allocations in Malaysia, major parts of spectrum have been assigned for government and commercial use. Despite the spectrum scarcity in meeting the demands for multimedia services, it was found from previous studies that most of the spectrum is actually not being utilised efficiently. Henceforth, lots of researches have been conducted to exploit this underutilised spectrum opportunistically without affecting the incumbents operations. Through the enabling Software Defined Radio (SDR) technology, Cognitive Radio (CR) has been proposed to solve the inefficient spectrum utilisation problems. CR is an adaptive, intelligent radio and network technology that has the ability to detect available vacant channels in radio frequency spectrum and change its particular transmission or reception parameters for efficient communication link achieved. In this thesis, SDR platform which consists of GNU Radio and Universal Software Radio Peripheral (USRP) is used for CR multimedia transmission development. In this system, adaptive Orthogonal Frequency Division Multiplexing (OFDM) is implemented to support robust multimedia transmission effectively. Next, Pseudorandom Multiband Frequency Switching is proposed for seamless frequency agility provision. For proof of concept, the proposed system is evaluated on several multimedia signals transmission. The results showed that the minimal time duration for each frequency switching of the system is approximately 1 second which resulted 20 dB for peak signal-to-noise ratio (PSNR) achievement. However, with higher rate of intermittent presence of incumbent or primary user (PU), faster switching rate is needed. Hence, the system developed needs further enhancement for a reliable and seamless multimedia transmission system to be realised. 2016-01 Thesis http://eprints.utm.my/id/eprint/60562/ http://eprints.utm.my/id/eprint/60562/1/HilmiMujahidAdliMFKE2016.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:93930 masters Universiti Teknologi Malaysia, Faculty of Electrical Engineering Faculty of Electrical Engineering
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering 'Adli Husin, Hilmi Mujahid Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
description	With the rapid growth of multimedia applications over the wireless Internet, the demand for radio spectral resources has increased significantly. Referring to frequency spectrum allocations in Malaysia, major parts of spectrum have been assigned for government and commercial use. Despite the spectrum scarcity in meeting the demands for multimedia services, it was found from previous studies that most of the spectrum is actually not being utilised efficiently. Henceforth, lots of researches have been conducted to exploit this underutilised spectrum opportunistically without affecting the incumbents operations. Through the enabling Software Defined Radio (SDR) technology, Cognitive Radio (CR) has been proposed to solve the inefficient spectrum utilisation problems. CR is an adaptive, intelligent radio and network technology that has the ability to detect available vacant channels in radio frequency spectrum and change its particular transmission or reception parameters for efficient communication link achieved. In this thesis, SDR platform which consists of GNU Radio and Universal Software Radio Peripheral (USRP) is used for CR multimedia transmission development. In this system, adaptive Orthogonal Frequency Division Multiplexing (OFDM) is implemented to support robust multimedia transmission effectively. Next, Pseudorandom Multiband Frequency Switching is proposed for seamless frequency agility provision. For proof of concept, the proposed system is evaluated on several multimedia signals transmission. The results showed that the minimal time duration for each frequency switching of the system is approximately 1 second which resulted 20 dB for peak signal-to-noise ratio (PSNR) achievement. However, with higher rate of intermittent presence of incumbent or primary user (PU), faster switching rate is needed. Hence, the system developed needs further enhancement for a reliable and seamless multimedia transmission system to be realised.
format	Thesis
qualification_level	Master's degree
author	'Adli Husin, Hilmi Mujahid
author_facet	'Adli Husin, Hilmi Mujahid
author_sort	'Adli Husin, Hilmi Mujahid
title	Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
title_short	Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
title_full	Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
title_fullStr	Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
title_full_unstemmed	Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
title_sort	multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2016
url	http://eprints.utm.my/id/eprint/60562/1/HilmiMujahidAdliMFKE2016.pdf
_version_	1747817760437567488

Multimedia transmission using orthogonal frequency division multiplexing based on cognitive radio

Similar Items