Performance of Orthogonal Frequency Division Multiplexing (OFDM) Communication System with Different Noisy Environment and Various Modulation Techniques

Abstract

Orthogonal frequency division multiplexing (OFDM) is capable of encountering multipath interference problem through its special characteristics of transmitting multi-carriers simultaneously in parallel form. OFDM is the key technology, due to its high data rates transmission and efficient utilization of available bandwidth. This paper introduces the analysis of OFDM with different modulation techniques and for different channel environment. Main emphasis of this paper is to analyze the results of different noisy channels which are AWGN, Rayleigh and Rician multipath fading. OFDM system model is simulated by using matlab’s simulink software. Finally, the simulation results of 16-PSK/QAM and 256-PSK/QAM modulation techniques are compared.
Keywords: Orthogonal