Traffic Analysis in Cellular Networks based on OFDMA Access

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Kohan, Reza | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 56004 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Ashtiani, Farid
Abstract:
OFDMA modulation method is a multiple access technique that is resistant to fading effect in cellular communication systems. In OFDMA, multiple access is performed both in time and frequency, so more users can be served with less delay than other protocols. In this thesis, based on queuing theory, we seek to present a traffic model for OFDMA system traffic analysis in single-cell mode and in the next section in multi-cell mode. Then, by examining and comparing the analytical results and the simulation results, we show that our proposed model for traffic analysis of the OFDMA system is a suitable and effective model. Also, since users in the multimedia environment need different types of services, such as voice, image, file sending, etc., each of them will have a different data rate. Therefore, in terms of the user's sending rate, we include different classes of service in the proposed traffic model, so that in each class, the corresponding user and according to his desired data rate, can use a specific number of sub-carriers if they are free
Keywords:
Resources Allocation ; Cellular Systems ; Multicarrier Systems ; Queuing Theory ; Service Quality ; Optical Orthogonal Frequency Division Multiplexing (OFDM) ; Traffic Analysis

No TOC