Simulink is the integrated environment of system modelling and simulation, which is being widespread used.This paper describes the MATLAB visual simulation of the propagation path loss model for telecommunication systems. We simulated the whole process of COST231-Walfisch-Ikegami model with high accuracy, built a visual simulation frame and the path loss curves are given. This method can be used in studying other propagation path loss models in propagation environments

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One of the most important method of estimating and graphing the underlying density is kernel density estimation (KDE). In this paper, we present basic knowledge of KDE, and simulations were carried out which compare three bandwidth selection methods [Normal rule of thumb (NROT), Least squares cross-validation (LSCV), and Biased cross-validation (BCV)]. Four types of kernel (Standard Normal, Biweight, Laplacian, Rational Quadratic and Circular) are chosen to do the simulation. Results shows that overall LSCV performs best.

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