Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA

Orthogonal Frequency-Division Multiplexing (OFDM) has been widely utilized in the field of high speed communication systems, due to its prominent features. However, it is prone to impairments such as Inter-Symbol Interference (ISI), Inter-Carrier Interference (ICI), and high Peak-to-Average Power R...

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Format:	Thesis
Language:	English
Subjects:	Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/4/Sameer.pdf
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spelling	my-unimap-780882023-03-07T07:44:21Z Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA Anuar, Mat Safar, Prof. Ir. Dr. Orthogonal Frequency-Division Multiplexing (OFDM) has been widely utilized in the field of high speed communication systems, due to its prominent features. However, it is prone to impairments such as Inter-Symbol Interference (ISI), Inter-Carrier Interference (ICI), and high Peak-to-Average Power Ratio (PAPR). Moreover, the Guard Interval (GI), which is inserted between the OFDM symbols, will take up nearly 25% of the bandwidth, decreasing the data rate and increasing the system‟s complexity. To mitigate for these impairments, a new OFDM based on Discrete Multiwavelet Critical-Sampling Transform (OFDM-DMWCST) model (Model 1) has been proposed in this work. The theoretical analysis proved that the OFDM-DMWCST model has higher bandwidth efficiency and less computational complexity compared to other OFDM systems utilizing Discrete Multiwavelet Over-Sampling Transform (DMWOST), Discrete Wavelet Transform (DWT), and Fast Fourier Transform (FFT). The simulation results showed that the OFDM-DMWCST provides better Bit Error Rate (BER) performance among all OFDM systems over different channel models, namely, Additive White Gaussian Noise (AWGN), flat fading, and frequency-selective fading. For instance, in the frequency-selective fading channel with 4-QAM mapping, at BER = 10-3, the OFDM-DMWCST reported a 1.5 dB and 14.2 dB gain in Signal-to-Noise Ratio (SNR) over OFDM based on DWT and OFDM based on FFT, respectively, while the OFDM based on DMWOST failed to realize such a BER value. Also, the OFDMDMWCST model can realize better PAPR reduction compared to the traditional OFDM model. Moreover, a hybrid technique, consisting of FFT and Sliding Window (SW) algorithm, has been proposed for the development of a new model for OFDMDMWCST and render it more suitable for outdoor applications. Universiti Malaysia Perlis (UniMAP) Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78088 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/1/Page%201-24.pdf badaef2399cc278a90600e39e658eb32 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/2/Full%20text.pdf 47839397c3a21983f90859cc15c75590 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/4/Sameer.pdf 5259a72ea135df3de2301803771da3de Universiti Malaysia Perlis (UniMAP) Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless School of Computer and Communication Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
advisor	Anuar, Mat Safar, Prof. Ir. Dr.
topic	Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless
spellingShingle	Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
description	Orthogonal Frequency-Division Multiplexing (OFDM) has been widely utilized in the field of high speed communication systems, due to its prominent features. However, it is prone to impairments such as Inter-Symbol Interference (ISI), Inter-Carrier Interference (ICI), and high Peak-to-Average Power Ratio (PAPR). Moreover, the Guard Interval (GI), which is inserted between the OFDM symbols, will take up nearly 25% of the bandwidth, decreasing the data rate and increasing the system‟s complexity. To mitigate for these impairments, a new OFDM based on Discrete Multiwavelet Critical-Sampling Transform (OFDM-DMWCST) model (Model 1) has been proposed in this work. The theoretical analysis proved that the OFDM-DMWCST model has higher bandwidth efficiency and less computational complexity compared to other OFDM systems utilizing Discrete Multiwavelet Over-Sampling Transform (DMWOST), Discrete Wavelet Transform (DWT), and Fast Fourier Transform (FFT). The simulation results showed that the OFDM-DMWCST provides better Bit Error Rate (BER) performance among all OFDM systems over different channel models, namely, Additive White Gaussian Noise (AWGN), flat fading, and frequency-selective fading. For instance, in the frequency-selective fading channel with 4-QAM mapping, at BER = 10-3, the OFDM-DMWCST reported a 1.5 dB and 14.2 dB gain in Signal-to-Noise Ratio (SNR) over OFDM based on DWT and OFDM based on FFT, respectively, while the OFDM based on DMWOST failed to realize such a BER value. Also, the OFDMDMWCST model can realize better PAPR reduction compared to the traditional OFDM model. Moreover, a hybrid technique, consisting of FFT and Sliding Window (SW) algorithm, has been proposed for the development of a new model for OFDMDMWCST and render it more suitable for outdoor applications.
format	Thesis
title	Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
title_short	Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
title_full	Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
title_fullStr	Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
title_full_unstemmed	Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
title_sort	development of new model for multiwavelet-based ofdm over wireless channel and its implementation in fpga
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Computer and Communication Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/1/Page%201-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/2/Full%20text.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/78088/4/Sameer.pdf
_version_	1776104240922492928

Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA

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