2005•IEICE Transactions on CommunicationsRequires access

Modeling and Analysis of OFDM Transmission Characteristics in Rayleigh Fading Environment in Which the Delay Profile Exceeds the Guard Interval

Yoshio Karasawa

Abstract

In order to assess the effect of multipath fading on Orthogonal Frequency Division Multiplex (OFDM) signal transmission when the delay profile exceeds the guard interval, a simple prediction model is developed based on the Equivalent Transmission-Path (ETP) model. This model, which is described in this paper, is referred to as the ETP-OFDM-statistical model. The validity of the model is demonstrated by comparing the calculated digital transmission characteristics to results obtained by computer simulation. Using the newly developed ETP-OFDM-statistical model, digital transmission characteristics of the OFDM signal in a multipath environment when the delay profile exceeds the guard interval are shown as a function of delay spread, guard interval and OFDM symbol period.

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Key concepts: Guard interval, Rayleigh fading, Computer science, Orthogonal frequency-division multiplexing, Fading, Guard (computer science), Interval (graph theory), Transmission (telecommunications)