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Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems

Doctor of Philosophy in Communication Engineering

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Bibliographic Details
Main Author: Ibraheem, Zeyid Tariq
Other Authors: Md. Mijanur, Rahman, Dr.
Format: Thesis
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2016
Subjects:
Orthogonal frequency division multiplexing
Digital modulation
Wireless LANs
Wireless communication systems
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77966
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spelling my.unimap-779662023-03-03T07:41:10Z Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems Ibraheem, Zeyid Tariq Md. Mijanur, Rahman, Dr. Orthogonal frequency division multiplexing Digital modulation Wireless LANs Wireless communication systems Doctor of Philosophy in Communication Engineering Orthogonal Frequency-Division Multiplexing (OFDM) is an important technology that enables transmission at high data rates. However, a major problem of OFDM systems is the high peak-to-average power ratio (PAPR) of OFDM signals. High PAPR drives the transmitter power amplifier (PA) into saturation, and causes nonlinear distortions. In order to improve the performance of the OFDM systems, PAPR should be significantly reduced at low computational complexities. Motivated by the requirement of efficient PAPR reduction techniques associated with multi-carrier systems, such as OFDM, this research explores the state-of-the-art PAPR reduction techniques and proposes new signal processing techniques that can achieve a minimum PAPR at lower computational complexities for given system parameters that are compatible with the appropriate standards. This thesis proposes a novel flexible and practical scheme for PAPR reduction, based on partial transmit sequence (PTS) technique, which is a well known probabilistic approach to the PAPR problem. This approach decreases the PAPR without any significant performance loss, adverse impact, or changes to the system. The proposed approach eliminates the known drawback of current PTS techniques, namely the high implementation complexity to achieve a significant PAPR reduction. In this thesis, three methods have been proposed to realize minimal PAPR with low computational complexity in an OFDM system. These approaches enhance both partitioning and phase rotation schemes within the PTS framework in order to minimize PAPR at lower computational complexities. The performances of the approaches were evaluated via computation of PAPR achieving these approaches and comparing them with the PAPR realized by traditional PTS schemes. The following are the principal contributions of this thesis. First, a new PTS partitioning method, namely the Blocked Interleaved Partitioning (BIP), which leads to better PAPR reduction performance, is proposed. Second, the Smallest Correlation Phase Vector (SCPV) and Blocked Random Phase Selection (BRPS) are proposed to determination the optimal phase rotations. Combination of proposed partitioning and phase rotation schemes resulted in two proposed PAPR reduction schemes namely BIPSC-PTS and BIPBR-PTS respectively. 2016 2023-03-03T07:31:30Z 2023-03-03T07:31:30Z Thesis http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77966 en Universiti Malaysia Perlis (UniMAP) Universiti Malaysia Perlis (UniMAP) School of Computer and Communication Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Orthogonal frequency division multiplexing
Digital modulation
Wireless LANs
Wireless communication systems
spellingShingle Orthogonal frequency division multiplexing
Digital modulation
Wireless LANs
Wireless communication systems
Ibraheem, Zeyid Tariq
Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
description Doctor of Philosophy in Communication Engineering
author2 Md. Mijanur, Rahman, Dr.
author_facet Md. Mijanur, Rahman, Dr.
Ibraheem, Zeyid Tariq
format Thesis
author Ibraheem, Zeyid Tariq
author_sort Ibraheem, Zeyid Tariq
title Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
title_short Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
title_full Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
title_fullStr Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
title_full_unstemmed Enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
title_sort enhanced partial transmit sequence technique with improved partitioning and phase factor methods for orthogonal frequency division multiplexing systems
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/77966
_version_ 1772813065806413824
score 13.214268

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