Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA
Doctor of Philosophy in Communication Engineering
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Universiti Malaysia Perlis (UniMAP)
2017
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| Online Access: | http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78088 |
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my.unimap-780882023-03-07T07:44:21Z Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA Sameer Akram, Dawood Anuar, Mat Safar, Prof. Ir. Dr. Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless Doctor of Philosophy in Communication Engineering 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. 2017 2023-03-07T07:42:27Z 2023-03-07T07:42:27Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78088 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering |
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Universiti Malaysia Perlis |
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UniMAP Library |
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Asia |
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Malaysia |
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Universiti Malaysia Perlis |
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http://dspace.unimap.edu.my/ |
| language |
English |
| topic |
Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless |
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Wireless communication systems Orthogonal Frequency-Division Multiplexing (OFDM) Wireless Sameer Akram, Dawood Development of new model for multiwavelet-based OFDM over wireless channel and its implementation in FPGA |
| description |
Doctor of Philosophy in Communication Engineering |
| author2 |
Anuar, Mat Safar, Prof. Ir. Dr. |
| author_facet |
Anuar, Mat Safar, Prof. Ir. Dr. Sameer Akram, Dawood |
| format |
Thesis |
| author |
Sameer Akram, Dawood |
| author_sort |
Sameer Akram, Dawood |
| 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 |
| publisher |
Universiti Malaysia Perlis (UniMAP) |
| publishDate |
2017 |
| url |
http://dspace.unimap.edu.my:80/xmlui/handle/123456789/78088 |
| _version_ |
1772813068241207296 |
| score |
13.214268 |