Abstract:
Wireless channels are subject to random fluctuations in received signal powerarising from multipath propagation and shadowing arising from the multiplescattering conditions. Considerable efforts have been devoted to the statisticalmodeling and characterization of these different effects, resulting in a range ofmodels for wireless channels which depend on the particular propagationenvironment and underlying communication scenario. The comparative analysis ofdifferent theoretical and empirical propagation models, such as Okumura, Hata,COST-231 Hata, and Longley-Rice, is given in this paper. After a brief introductionand description of these models, we present some numerical results usingMATLAB and RadioWORKS.
