An overview of orthogonal frequency division multiplexing principles, architecture, and its application

Sheriff Alimi; Olujimi D Alao; Quadri A Mumuni

doi:10.30574/gjeta.2022.12.1.0118

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An overview of orthogonal frequency division multiplexing principles, architecture, and its application

Sheriff Alimi ^{1, *}, Olujimi D Alao ¹and Quadri A Mumuni ²

1 Department of Computer Science, Babcock University, Ogun State, Nigeria.

2 Department of Electronic and Computer Engineering, Lagos State University, Nigeria.

Research Article

Global Journal of Engineering and Technology Advances, 2022, 12(01), 120–130.

Article DOI: 10.30574/gjeta.2022.12.1.0118

DOI url: https://doi.org/10.30574/gjeta.2022.12.1.0118

Publication history

Received on 16 June 2022; revised on 20 July 2022; accepted on 22 July 2022

Abstract

In this work, Orthogonal Frequency Division Multiplexing’s (OFDM) principles, implementation design or high-level system architecture and application were reviewed. The condition for orthogonality, frequency spacing between consecutive subcarriers (called frequency spacing) was established analytically with practical instance highlighted. The review also covers Fast Fourier Transform (FFT) which serves as a bank of demodulators while Inverse Fast Fourier Transform (IFFT) serves as a bank of modulators in an OFDM system, advancement in OFDM, Quadrature modulation types (Binary Phase Shift Keying, 4-Quadrature Amplitude Modulation, 8-Quadrature Amplitude Modulation, 16-Quadrature Amplitude Modulation, and 64-Quadrature Amplitude Modulation QAM) and spectrum efficiency was also covered. Several technologies that use OFDM were mentioned but attention was given to its usage in Wireless LAN 802.11a.

Keywords

Orthogonal Frequency Division Multiplexing; OFDM; WLAN; Fast Fourier Transform; 4G

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How to cite this article

Sheriff Alimi, Olujimi D Alao and Quadri A Mumuni. An overview of orthogonal frequency division multiplexing principles, architecture, and its application. Global Journal of Engineering and Technology Advances, 2022, 12(1), 120-130. Article DOI: https://doi.org/10.30574/gjeta.2022.12.1.0118

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