Study on coexistence and sharing between DVB-T and LTE system

Coexistence and sharing between DVB-T and LTE-OFDM, at the same frequency band (662 - 742 MHz) with CR and without CR are presented. By increasing convention of digital TV, TV white spaces (TVWS) which are free spectrums after switch over will be remaining. Based on the opportunity of using these fr...

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Main Author:	Sangtarash, Sara
Format:	Thesis
Language:	English
Published:	2011
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utm.my/id/eprint/33416/5/SaraSangtarashMFKE2011.pdf
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id	my-utm-ep.33416
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spelling	my-utm-ep.334162018-05-27T08:07:51Z Study on coexistence and sharing between DVB-T and LTE system 2011-07 Sangtarash, Sara TK Electrical engineering. Electronics Nuclear engineering Coexistence and sharing between DVB-T and LTE-OFDM, at the same frequency band (662 - 742 MHz) with CR and without CR are presented. By increasing convention of digital TV, TV white spaces (TVWS) which are free spectrums after switch over will be remaining. Based on the opportunity of using these free spectrums for secondary users, we investigated the possibility of use them for LTE-OFDM. Our studied has shown that for coexistence and sharing between DVB-T and LTE-OFDM, probability of interference is high and large protraction guard distance is needed. However when we apply CR technique, it can avoid from harmful interference from secondary system and improve spectrum efficiency. CR technology is able to sense the spectrums over a frequency band, and detect the existence/absence of primary users, and base on detect the free spectrum; use that spectrum without harmful interference with primary users. So, the spectrum usage can be enhanced by making a secondary user access into the spectrum holes or spectrum parts that in an exacting position and time have not dedicated by a primary user. Our result shows that the probability of interference with CR will be decrees and the guard distance will be less than before. Also base on detection threshold (DT) (when we use CR technique), the number of active white space devices (WSDs) or secondary users changed when we use variable detection threshold. IN addition, the behavior of the LTE CR in downlink is closely to that of the measurement that has been introduced for uplink. The proposed project showed improvement of system with CR. Since the number of LTE users is growing and it is needed more spectrum and there are limitation in amount of spectrum, LTECR can be used by application as a future wireless communication system. 2011-07 Thesis http://eprints.utm.my/id/eprint/33416/ http://eprints.utm.my/id/eprint/33416/5/SaraSangtarashMFKE2011.pdf application/pdf en public 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 Sangtarash, Sara Study on coexistence and sharing between DVB-T and LTE system
description	Coexistence and sharing between DVB-T and LTE-OFDM, at the same frequency band (662 - 742 MHz) with CR and without CR are presented. By increasing convention of digital TV, TV white spaces (TVWS) which are free spectrums after switch over will be remaining. Based on the opportunity of using these free spectrums for secondary users, we investigated the possibility of use them for LTE-OFDM. Our studied has shown that for coexistence and sharing between DVB-T and LTE-OFDM, probability of interference is high and large protraction guard distance is needed. However when we apply CR technique, it can avoid from harmful interference from secondary system and improve spectrum efficiency. CR technology is able to sense the spectrums over a frequency band, and detect the existence/absence of primary users, and base on detect the free spectrum; use that spectrum without harmful interference with primary users. So, the spectrum usage can be enhanced by making a secondary user access into the spectrum holes or spectrum parts that in an exacting position and time have not dedicated by a primary user. Our result shows that the probability of interference with CR will be decrees and the guard distance will be less than before. Also base on detection threshold (DT) (when we use CR technique), the number of active white space devices (WSDs) or secondary users changed when we use variable detection threshold. IN addition, the behavior of the LTE CR in downlink is closely to that of the measurement that has been introduced for uplink. The proposed project showed improvement of system with CR. Since the number of LTE users is growing and it is needed more spectrum and there are limitation in amount of spectrum, LTECR can be used by application as a future wireless communication system.
format	Thesis
qualification_level	Master's degree
author	Sangtarash, Sara
author_facet	Sangtarash, Sara
author_sort	Sangtarash, Sara
title	Study on coexistence and sharing between DVB-T and LTE system
title_short	Study on coexistence and sharing between DVB-T and LTE system
title_full	Study on coexistence and sharing between DVB-T and LTE system
title_fullStr	Study on coexistence and sharing between DVB-T and LTE system
title_full_unstemmed	Study on coexistence and sharing between DVB-T and LTE system
title_sort	study on coexistence and sharing between dvb-t and lte system
granting_institution	Universiti Teknologi Malaysia, Faculty of Electrical Engineering
granting_department	Faculty of Electrical Engineering
publishDate	2011
url	http://eprints.utm.my/id/eprint/33416/5/SaraSangtarashMFKE2011.pdf
_version_	1747816155938029568

Study on coexistence and sharing between DVB-T and LTE system

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