Improved path-loss model for predicting TV coverage for secondary access Online publication date: Thu, 30-Oct-2014
by Nasir Faruk; Adeseko A. Ayeni; Yinusa A. Adediran; Nazmat T. Surajudeen-Bakinde
International Journal of Wireless and Mobile Computing (IJWMC), Vol. 7, No. 6, 2014
Abstract: Path-loss model is essential for proper planning of emerging technologies in the broadcast frequency band. Characterisation of the radio channel is paramount for accurate prediction of TV coverage, and achievement of peaceful coexistence between the TV (primary users) and other new infrastructures (secondary users). In this paper, field strength measurements are conducted along six routes that spanned through urban, suburban and rural areas of Kwara State, Nigeria. The measurement results are compared with path-loss prediction of eight widely used empirical models. Least squares and linear iterative methods are employed to optimise Hata-Davidson's model, as it showed best fit compared with other models. The predictions of the tuned model are compared with other models in terms of relative error, mean error, skewness, root mean square errors and normalised error probability density function. Results of the simulations indicate that the optimised model gives better values for the metrics considered.
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