Diversity technique using discrete wavelet transform in OFDM system

Parveen, Nagma and Abdullah, Khaizuran and Islam, Md Rafiqul and Boby, Rounakul Islam (2019) Diversity technique using discrete wavelet transform in OFDM system. International Journal of Engineering and Advanced Technology, 8 (2). pp. 284-287. ISSN 2249-8958

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Abstract

Spectrum usage due to an increasing number of mobile users using services like audio, video, and images is one of the challengings for wireless communication. Orthogonal Frequency Division Multiplexing (OFDM) is one of the promising techniques to increase spectral efficiency. However, the conventional OFDM using fast fourier transform (FFT) still has the drawback of reducing spectral efficiency. Discrete wavelet transforms (DWT) has been used as an alternative method replacing FFT to increase the spectral efficiency. This paper presents the fundamental of wavelets and their significance in wireless communication. A review of the literature has been done on how the DWT-OFDM performs better when compared to FFT-OFDM and on diversity technique such as transmit and receive diversity. The advantages of using diversity at both receiver and transmitter, i.e., Multiple inputs and multiple output systems and the overview of the technique is also considered. The flexibility, improve in the performance of BER, mitigate the interference DWT-OFDM with diversity at both transmitter and receiver provides emerging technology for future generation.

Item Type:	Article (Journal)
Additional Information:	3407/79831
Uncontrolled Keywords:	OFDM, DWT, FFT, BER.
Subjects:	T Technology > T Technology (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Dr Khaizuran Abdullah
Date Deposited:	25 Jun 2020 16:07
Last Modified:	25 Jun 2020 16:07
URI:	http://irep.iium.edu.my/id/eprint/79831

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