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2008•Journal of Gansu Lianhe UniversityRequires access

Analysis of the Roles of Cyclic Prefix in OFDM System

Kong Fan-ting

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Abstract

Recently orthogonal frequency division multiplexing(OFDM) has received more and more attention and has been applied to IEEE 802.11 wireless LAN.We usually apply cyclic prefix in OFDM system.In this paper,we analyses the roles of cyclic prefix by considering the power spectral density and present its simulation result.The results show that by adding the prefix cycle can effectively eliminate inter-symbol interference(ISI) and inter-carrier interference(ICI).

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What this paper is about

Recently orthogonal frequency division multiplexing(OFDM) has received more and more attention and has been applied to IEEE 802.11 wireless LAN.We usually apply cyclic prefix in OFDM system.In this paper,we analyses the roles of cyclic prefix by considering the power spectral density and present its simulation result.The results show that by adding the prefix cycle can effectively eliminate inter-symbol interference(ISI) and inter-carrier interference(ICI).

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Available abstract

Recently orthogonal frequency division multiplexing(OFDM) has received more and more attention and has been applied to IEEE 802.11 wireless LAN.We usually apply cyclic prefix in OFDM system.In this paper,we analyses the roles of cyclic prefix by considering the power spectral density and present its simulation result.The results show that by adding the prefix cycle can effectively eliminate inter-symbol interference(ISI) and inter-carrier interference(ICI).

Key concepts: Cyclic prefix, Orthogonal frequency-division multiplexing, Prefix, Interference (communication), Computer science, Spectral efficiency, Wireless, Multiplexing

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