Mobility

OFDM: BER Performance by Cyclic Prefix Length

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Executive Summary

Orthogonal Frequency Division Multiplexing (OFDM) is one of the recent year's equalization approaches used in order to reduce the inter-symbol interference introduced by the frequency selectivity of the radio channels. The circular extension of the data symbol, commonly referred to as cyclic prefix is one of the key elements in an OFDM transmission scheme. The influence of the cyclic prefix duration on the BER performance of an OFDM system with in-frame DBPSK modulation is evaluated by means of computer simulation in a multipath fading channel.

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