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Simulation Analysis of Information Transmitting Mechanism based on Amplitude Modulation Technique
Subject area: Science,Engineering and Technology · Area of research: Data Communication
Abstract
This paper has presented simulation analysis of information transmitting mechanism based on amplitude modulation (AM) technique. In AM technique, the amplitude of carrier signal is varied in proportion to the continuous time amplitude of the message signal. The study has modelled an AM modulating and demodulating system in MATLAB/Simulink environment. Three different scenarios were considered in terms of varying modulation index. The values of modulation indices selected are 1, 0.5 and 1.5 representing perfect, under and over modulations respectively. The results indicated that at modulation indices of 0.5and 1, the modulating signals produced no distortion. However, selecting a modulation index of 1.5produced distortion in the transmitted information and as such choosing a modulation index of above one will not be suitable in the transmission of information in AM system.
Keywords
Amplitude modulation, Information, Modulation index, Transmission
References
[1] G. N. Kareem, G. A. Gbotoso, and S. O. Omogoye, MATLAB analysis and Simulink model for amplitude modulation technique, World Journal of Advanced Engineering Technology and Sciences,2(2) ,2021, 21-28.
[2] D. Mitić, A Lebl. Selection procedure for modulation using simulation in Matlab, MIPRO 2011 - 34th Int. Conv. Inf. Commun. Technol. Electron. Microelectron. - Proc. 2011, 547–552.
[3] R. R. Suryawanshi, and V. D. Patils, Simulink implementation of amplitude modulation technique using Matlab, International Research Journal of Engineering and Technology, 5(8), 2018, 185-189.
[4] M. Boulmalf, Y. Semmar, A. Lakas, and K. Shuaib, teaching digital and analog modulation to undergraduate information Technology students using Matlab and Simulink, IEEE EDUCON Education Engineering, 2010, Madrid, Spain, 685-691.
[5] Lab 1: Amplitude Modulator and Demodulator, ECE Undergraduate Laboratories, ECE 489 Communications Systems Laboratory.
[6] H. Taub, D. L. Principles of Communication Systems (3rd ed.). McGraw Hill.
[7] B. L. Theraja, Basic electronics (Solid state), 5th ed., S. CHAND, New Delhi.
How to cite this paper
@article{1703073,
author = {C. T. Ikwuazom, U. M. Obi, J. E. Jibiri, I. A. Amaefule, D. O. Njoku; C.D. Anyiam},
title = {Simulation Analysis of Information Transmitting Mechanism based on Amplitude Modulation Technique},
journal = {Iconic Research And Engineering Journals},
year = {2021},
volume = {5},
number = {6},
pages = {221-226},
issn = {2456-8880},
url = {https://www.irejournals.com/formatedpaper/17030731.pdf},
abstract = {This paper has presented simulation analysis of information transmitting mechanism based on amplitude modulation (AM) technique. In AM technique, the amplitude of carrier signal is varied in proportion to the continuous time amplitude of the message signal. The study has modelled an AM modulating and demodulating system in MATLAB/Simulink environment. Three different scenarios were considered in terms of varying modulation index. The values of modulation indices selected are 1, 0.5 and 1.5 representing perfect, under and over modulations respectively. The results indicated that at modulation indices of 0.5and 1, the modulating signals produced no distortion. However, selecting a modulation index of 1.5produced distortion in the transmitted information and as such choosing a modulation index of above one will not be suitable in the transmission of information in AM system.},
keywords = {Amplitude modulation, Information, Modulation index, Transmission},
month = {December},
}