Published Papers

Hi ladies and gentlemen, I am Elnaz and welcome to my website.

During my educational and research life, thank god, I am honored that published some Papers in intra symposiums in Iran and also the International ones. Here I am sharing with you these papers which can be useful for you and you can use them in your education time…

Here I brought for you the list of them with their abstract, and if you need the full version of the articles, just please let me know in my info-mail box, and then you will get the full file free in your email…

1. Optimization and Adjustment of Parameters in Cellular Communication Networks Using the PSO Algorithm.

Abstract: In this paper, using the PSO optimization algorithm, a method to solve the problem of optimal cell planning in cellular communication networks are proposed. In this method, the antenna position, height, power, and tilt of each BTS are optimally determined. The cost function contains two different parts of coverage and interference, and hence, we are encountered a two-objective optimization problem. In each of the five different scenarios considered, these two parts of the cost function are weighted with different coefficients. The simulation results indicate that when both coverage and interference have the same weights, the proposed algorithm would have its best performance; such that, the only almost twelve percent of the environment is not covered by the network and the interference is limited to just about one percent, which is both very good amounts. The proposed algorithm has been run for the Azadshahr area of Mashhad, in which the Sadjad University of Technology is located. In order to calculate the coverage and interference, the Urban Signal Propagation Simulator software (USPS) is used.

2. Developing a New Phase Noise Estimation Technique Based on Time-Varying Model-article.

Abstract: Since all oscillators are periodically time-varying systems, to accurate phase noise calculation and simulation, the time-varying model should be considered. Linear time-invariant and linear time-variant models for calculating phase noise are studied in this paper. Moreover, a simple method for Impulse Sensitivity Function (ISF) calculation is proposed. This method promises more effective and simpler than previous methods that are published in the literature. The proposed method of validity has been confirmed by simulation.

3. Optimum Cell planning for CDMA System by Using Genetic Algorithm.

Abstract: In mobile telecommunications, the cellular design is a very complex issue that affects factors such as the location and shape of obstacles in the environment, population density, and other environmental conditions. As a result, it is simply not possible to do this classically. In some cellular design methods, designers only determine the optimal location of base stations and then adjust environmental parameters such as power, tilt, and height of the antenna. In this paper, a new method is presented in which the Multi-objective genetic algorithm is used. By using the Multi objective genetic algorithm, not only can we find the optimum location of third-generation mobile telecommunications base stations, but also the height, power, and tilt parameters of each antenna are determined simultaneously and optimally. The goal is to reduce interference and increase network coverage simultaneously. The efficiency of the proposed method has been investigated using USPS wave propagation simulation software in a specific area of Mashhad Azadshahr, where the Sadjad University of Technology is located. The simulation results show that the proposed method.