PERFORMANCE ANALYSIS AND EFFECT OF TERRAIN ATTENUATION ON OUTDOOR PROPAGATION MODELS

Abstract

Network planning is a complicated process consisting of several phases and involves through estimation by outdoor propagation models. The final target for the network planning process is to define the network design, which is then built as a cellular network. The network design can be an extension of the existing GSM network or a new network to be launched. The difficulty in network planning is to combine all of the requirements in an optimal way and to design a cost-effective network using outdoor propagation models. Outdoor propagation models helps in calculating propagation loss using collected data. The basic requirements for the cellular network are to meet coverage and quality targets. Terrain factors such as area, foliage, rain etc also greatly affect network planning. BACKGROUND OF RESEARCH WORK Careful network planning has become increasingly critical with the rising deployment, coverage and congestion of wireless area networks. Efforts have been made by' researchers to analyze the performance of outdoor propagation models. Some researchers have even designed new waveguides and algorithm. Outdoor propagation models have been analyzed on the basis' of collected data which allow estimating cell coverage area while minimizing path loss. Models analysis describes features, configuration requirements, parameters, statistics and scenarios for network planning. Propagation models have been estimated for performance analysis in terms RxLevel strength and Errors. In the present analysis an attempt has been made to achieve prediction accuracy of Okumura, COST 231 HATA, COST W-I, Egli and ECC 33 models for fringe area of Uttarakhand. Best model is selected and tuned to minimize path loss. Further the analysis is extended to analyze the effect of terrain on electromagnetic wave.......