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Implementing Orthogonal Frequency Division Multiplexing Using IFFT/FFT

Nkordeh, Nsikan and Idachaba, F.E. and Bob-Manuel, Ibinabo and Oni, O.O. (2016) Implementing Orthogonal Frequency Division Multiplexing Using IFFT/FFT. In: World Congress on Engineering, June 29 - July 1, 2016, London, U.K.. (In Press)

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Orthogonal Frequency Division Multiplexing (OFDM) is a modulation system that offers many advantages over other modulation scheme. OFDM is a particular form of Multi-carrier transmission and is suited for frequency selective channels and high data rates; it overcomes the Inter Symbol Interference(ISI) problem by modulating multiple narrow-band sub-carriers in parallel. In this paper, analysis of OFDM is carried out with emphasis on the implementation using IFFT/FFT as against multiple Oscillators and demodulators. The concept of orthogonality of carriers is used to explain the ability to transmit multi-carriers without interference and the ease of decoupling the signal information at the receivers. Matlab simulations were carried out to show these concepts

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: FFT, IFFT, Modulation, Multi-carrier, OFDM, Orthogonality
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Depositing User: Mrs Patricia Nwokealisi
Date Deposited: 14 Sep 2018 11:52
Last Modified: 14 Sep 2018 11:52

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