Abstract

This article's goal is to give some theoretical context for the OFDM transmission method. We go over the block diagram for a "classic" OFDM system, which uses a GI to lessen multipath radio channel impairments. In addition, we deduce the mathematical model for an idealized system and explore several hardware-related design issues, culminating in the conclusion that data symbols can be transferred independently of one another [that is, without intercarrier interference (ICI) and ISI]. Additionally, the consequences of synchronization flaws, such as timing problems and carrier frequency and phase offsets, are examined. It is possible to assess both coherent and differential detection techniques for Rayleigh and Rician fading channels. Additionally, we demonstrate differential detection in time direction for the system proposal under consideration.