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International Journal of Advanced Engineering, Management and Science


Implementation Performance of Mobile Wimax for Various Propagation Models

( Vol-1,Issue-2,May 2015 )

Author(s): Dontabhaktuni Jayakumar , Modi Grace Priscilla , Madhavuni Sandhya Rani



Total View : 663
Downloads : 14
Page No: 20-28
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Keywords:

Wimax, Propagation Models, Okumura Model , Path loss.

Abstract:

Nowadays the Worldwide Interoperability of Microwave Access (WiMAX) technology becomes popular and receives growing acceptance as a Broadband Wireless Access (BWA) system. These networks enable high data transmission rates. WiMAX is the newest wireless broadband Internet technology based on IEEE 802.16 standard. Based on OFDM (Orthogonal Frequency Division Multiplexing), this system uses radio frequency range from 2 to 11 GHz. WiMAX has potential success in its line-of-sight (LOS) and non line-of-sight (NLOS) conditions which operating below 11 GHz frequency. There are going to be a surge all over the world for the deployment of WiMAX networks. Estimation of path loss and signal coverage is very important in initial deployment of wireless network and cell planning. Numerous path loss (PL) models (e.g. Okumura Model, Hata Model) are available to predict the propagation loss, but they are inclined to be limited to the lower frequency bands (up to 2 GHz). In this thesis we compare and analyze different path loss models and signal coverage (i.e. COST 231 Hata model, ECC-33 model, SUI model, Ericsson model and COST 231 Walfish-Ikegami model) in different receiver antenna heights in urban, suburban and rural environments in NLOS condition. Our main concentration in this thesis is to find out a suitable model for different environments to provide guidelines for cell planning of WiMAX at cellular frequency. From calculations, that I made, can be concluded, that FSPL model, gives the lowest path loss, in all type of terrains – rural, suburban and rural areas. Model ECC-33 can predict path loss in urban and suburban areas, but it is unusable in rural areas. Also I can conclude, that model SUI, has approximately the same values of path loss with those, computed with FSPL model. My research shows that all Pathloss will be less in Rural areas compared to urban and suburban, Signal coverage will be more in suburban areas than in urban areas.

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