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DWT based FFT in practical OFDM systems

Lee , A.K. and Ooi , - and Drieberg , Micheal and Jeoti , Varun (2007) DWT based FFT in practical OFDM systems. In: 2006 IEEE Region 10 Conference, TENCON 2006, 14 November 2006 through 17 November 2006, Hong Kong.

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Abstract

OFDM is a multi-carrier technique based on a very simple modulation scheme that uses IFFT and FFT at its core for transmission and reception respectively. The performance of the OFDM receiver is significantly affected in the presence of noise in the wireless channel. In this work a receiver that has built-in denoising capacity with little additional computation is proposed. It is based on a DWT based FFT algorithm. Experiments using MATLAB are conducted to verify the feasibility of this denoising algorithm on OFDM signals. The result shows noise suppression thus supports our claim. © 2006 IEEE.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Discrete wavelet transforms; Fast Fourier transforms; Frequency modulation; MATLAB; Signal receivers; Built-in denoising capacity; Multi-carrier technique; Noise suppression; Orthogonal frequency division multiplexing
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:253
Deposited By: Micheal Drieberg
Deposited On:01 Mar 2010 03:55
Last Modified:19 Jan 2017 08:27

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