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Books by Faisal Tariq

Research paper thumbnail of Nonlinear Error in OFDM Based Systems: A Compensation Technique for Link Adaptation

Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for recent and future ... more Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for recent and future wireless communication systems mainly due to its high spectral efficiency and inherent capacity to combat Inter Symbol Interference (ISI). However it suffers from nonlinear error problem, popularly known as high Peak to Average Power Ratio (PAPR) due to nonlinear transfer function of Power Amplifiers in Transmitters. It causes severe performance degradation to the systems that employ link adaptation for achieving better efficiency such as LTE and WiMAX. Therefore it is important to understand the nature and impact of the error. This book will discuss basics of OFDM and provide an in depth understanding of the nonlinear error and its impact of link adaptive OFDM systems. It also provides detail simulation results and analysis of its impact on the system for different channel condition, modulation and FEC coding rate. Finally a compensation technique will be introduced to overcome the impact of nonlinear errors.

Papers by Faisal Tariq

Research paper thumbnail of Impact of Nonlinear Power Amplifier on Link Adaptation Algorithm of OFDM Systems

2007 IEEE 66th Vehicular Technology Conference, 2007

Research paper thumbnail of Impact of PAPR on link adaption strategies of OFDM based systems

1.1 Background Wireless communication has gained momentum during past one and a half decade with ... more 1.1 Background Wireless communication has gained momentum during past one and a half decade with invention of digital cellular system. Initially the focus of the wireless system was to enable voice communication and therefore data rate requirement was quite low. With the emergence of mobile multimedia service based on 3G and beyond technologies, there is a tremendous growth in demand of wireless services that contains more than just voice data [1][2].

Research paper thumbnail of An Interference-Aware Virtual Clustering Paradigm for Resource Management in Cognitive Femtocell Networks

Research paper thumbnail of Cognitive Femtocell Networks

Cognitive Communications: Distributed …, Jan 1, 2012

The emergence of new high-end, hand-held devices and smart phones, is inexorably shifting users&a... more The emergence of new high-end, hand-held devices and smart phones, is inexorably shifting users' focus towards more data intensive applications like network gaming, video conversations, and online music and video streaming. Studies suggest that this high data rate demand is chiefly generated from indoor environments [1], where radio coverage is generally poor due to wall penetration losses inside buildings. The problem is compounded in the cell-edge area which is furthest from the serving macrocell base stations (BS). The ...

Research paper thumbnail of Virtual clustering for resource management in cognitive femtocell networks

… and Control Systems and …, Jan 1, 2011

Research paper thumbnail of Dynamic fractional frequency reuse based hybrid resource management for femtocell networks

… and Mobile Computing …, Jan 1, 2011

Research paper thumbnail of Impact of nonlinear power amplifier on link adaptation algorithm of OFDM systems

… , 2007. VTC-2007 …, Jan 1, 2007

Research paper thumbnail of Nonlinear Error in OFDM Based Systems: A Compensation Technique for Link Adaptation

Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for recent and future ... more Orthogonal Frequency Division Multiplexing (OFDM) is a promising technique for recent and future wireless communication systems mainly due to its high spectral efficiency and inherent capacity to combat Inter Symbol Interference (ISI). However it suffers from nonlinear error problem, popularly known as high Peak to Average Power Ratio (PAPR) due to nonlinear transfer function of Power Amplifiers in Transmitters. It causes severe performance degradation to the systems that employ link adaptation for achieving better efficiency such as LTE and WiMAX. Therefore it is important to understand the nature and impact of the error. This book will discuss basics of OFDM and provide an in depth understanding of the nonlinear error and its impact of link adaptive OFDM systems. It also provides detail simulation results and analysis of its impact on the system for different channel condition, modulation and FEC coding rate. Finally a compensation technique will be introduced to overcome the impact of nonlinear errors.

Research paper thumbnail of Impact of Nonlinear Power Amplifier on Link Adaptation Algorithm of OFDM Systems

2007 IEEE 66th Vehicular Technology Conference, 2007

Research paper thumbnail of Impact of PAPR on link adaption strategies of OFDM based systems

1.1 Background Wireless communication has gained momentum during past one and a half decade with ... more 1.1 Background Wireless communication has gained momentum during past one and a half decade with invention of digital cellular system. Initially the focus of the wireless system was to enable voice communication and therefore data rate requirement was quite low. With the emergence of mobile multimedia service based on 3G and beyond technologies, there is a tremendous growth in demand of wireless services that contains more than just voice data [1][2].

Research paper thumbnail of An Interference-Aware Virtual Clustering Paradigm for Resource Management in Cognitive Femtocell Networks

Research paper thumbnail of Cognitive Femtocell Networks

Cognitive Communications: Distributed …, Jan 1, 2012

The emergence of new high-end, hand-held devices and smart phones, is inexorably shifting users&a... more The emergence of new high-end, hand-held devices and smart phones, is inexorably shifting users' focus towards more data intensive applications like network gaming, video conversations, and online music and video streaming. Studies suggest that this high data rate demand is chiefly generated from indoor environments [1], where radio coverage is generally poor due to wall penetration losses inside buildings. The problem is compounded in the cell-edge area which is furthest from the serving macrocell base stations (BS). The ...

Research paper thumbnail of Virtual clustering for resource management in cognitive femtocell networks

… and Control Systems and …, Jan 1, 2011

Research paper thumbnail of Dynamic fractional frequency reuse based hybrid resource management for femtocell networks

… and Mobile Computing …, Jan 1, 2011

Research paper thumbnail of Impact of nonlinear power amplifier on link adaptation algorithm of OFDM systems

… , 2007. VTC-2007 …, Jan 1, 2007

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