Title: Comparative Analysis of OFDM System For QPSK and 16-QAM Modulation Scheme


Authors:

Ankit Agarwal

ankit.agarwal@skit.ac.in
Department of Electronics and Communication Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India,

Rashmi Choudhary

rashmiec87@gmail.com
Department of Electronics and Communication Engineering, Swami Keshvanand Institute of Technology, Management & Gramothan, Jaipur, India

Pages: 35-39

DOI:

Abstract:

Technology for broadcasting radio signals has progressed fast in the last few years because of the growing need for high-quality sound services and data transmission in mobile environments. Radio broadcasting technology has progressed swiftly. In this paper, the comparison of an OFDM (Orthogonal Frequency Division Multiplexing) system for 16-QAM modulation (Quadrature Amplitude Modulation) and QPSK Modulation is demonstrated. This work shows that for audio signal transmission, the OFDM with 16-QAM modulation is better than QPSK Modulation. For the theoretical approaches, AWGN (Adaptive White Gaussian Channel) is commonly implemented for modeling noise channels because it is easy to implement, and mathematical modeling is easy. The input data is taken randomly as well as an audio signal. The simulation is done in a MATLAB environment.

Keywords:
AWGN Channel, 16-QAM Modulation, Sound signal, OFDM System