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Toward Coexistence and Sharing between IMT-Advanced and Existing Fixed Systems
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International Journal of Computer Science and Security (IJCSS)
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Volume:  2    Issue:  3
Pages:  1-65
Publication Date:   June 2008
ISSN (Online): 1985-1553
30 - 47
Published Date   
CSC Journals, Kuala Lumpur, Malaysia
Keywords   Abstract   References   Cited by   Related Articles   Collaborative Colleague
KEYWORDS:   ACIR, Additional isolation, Spectral emission mask, FWA systems, IMT-Advanced system 
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In this paper coexistence and spectrum sharing between systems as a recently critical issue due to emerging new wireless technologies and spectrum scarcity are investigated. At World Radiocommunication Conferences 2007 (WRC-07), International Telecommunication Union - Radiocommunications (ITU-R) allocated 3400-3600 MHz band for the coming fourth generation (4G) or IMT-Advanced on a co-primary basis along with existing Fixed Wireless Access (FWA) systems. Therefore, coexistence and sharing requirements like separation distance and frequency separation coordination must be achieved in terms of both co-channel and adjacent channel frequencies. Co-sited the two base stations antennas and non co-sited coexistence of the two systems are analyzed. The interference analysis models, Adjacent Channel Interference Ratio (ACIR) and spectrum emission mask are applied in the 3.5 GHz band to extract the additional isolation needed to protect adjacent channel interference. Also interference to noise ratio as a standard interference criteria is introduced. Finally, possible intersystem interference mitigation techniques are suggested and explained.  
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1 Z. A. Shamsan and T. B. A. Rahman, “On The Comparison of Intersystem Interference Scenarios Between Imt-Advanced and Fixed Services Over Various Deployment Areas At 3500 MHZ”, PIER C Progress In Electromagnetics Research C, 5, pp. 169-185, 2008.
2 Z. A. Shamsan and T. A, Rahman, “Intersystem Interference Scenarios between Fixed and IMT-Advanced Services in Different Terrestrial Regions”, in Proceedings, Future Computer and Communication, International Conference, Kuala Lumpar, 3-5 April 2009, pp. 237 – 240.
3 M. Majed, “Coexistence between the Mobile Service and Terrestrial - Digital Video Broadcasting in the 790-862 MHz frequency band”. Master’s Thesis, Faculty of Electrical Engineering, Universiti Teknologi Malaysia, 2010.
2 Umm Al-Qura University
3 yasni
4 Universiti Teknologi Malaysia
Zaid Ahmed Shamsan : Colleagues
Sharifah Kamilah Syed-Yusof : Colleagues
Tharek Abd. Rahman : Colleagues  
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