Browsing by Author "Al-Dhahir, Naofal"
Now showing items 1-12 of 12
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A General Framework for Designing Sparse FIR MIMO Equalizers Based on Sparse Approximation
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)In broadband communications, the long channel delay spread, defined as the duration in time, or samples, over which the channel impulse response (CIR) has significant energy, is too long and results in a highly-frequency-selective ... -
Achievable Rates of Buffer-Aided Full-Duplex Gaussian Relay Channels
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)We derive closed-form expressions for the achievable rates of a buffer-aided full-duplex (FD) multiple-input multiple-output Gaussian relay channel. The FD relay still suffers from residual self-interference (RSI) after ... -
Beamforming OFDM Performance under Joint Phase Noise and I/Q Imbalance
( IEEE , 2015 , Article)Phase noise (PHN) and in-phase/quadrature (I/Q) imbalance are two major RF impairments in direct-conversion wireless transceivers. Beamforming and orthogonal frequency division multiplexing (OFDM) schemes have been adopted ... -
Coexistence of IEEE 802154g and WLAN
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)The aging electric grid was established hundred years ago when electricity needs were simple. The power plants were centralized and most homes had only small energy demands such as few lamps and radios. The grid role was ... -
Exact SINR analysis of OFDM systems under joint Tx/RX I/Q imbalance
( IEEE , 2013 , Conference Paper)The direct-conversion architecture used for Orthogonal Frequency Division Multiplexing (OFDM) systems suffers from intercarrier interference (ICI) between image subcarriers in each OFDM symbol due to I/Q imbalance between ... -
Exploiting Sparsity in Amplify-and-Forward Broadband Multiple Relay Selection
( IEEE , 2019 , Article)Cooperative communication has attracted significant attention in the last decade due to its ability to increase the spatial diversity order with only single-antenna nodes. However, most of the techniques in the literature ... -
Impact of the Wireless Network's PHY Security and Reliability on Demand-Side Management Cost in the Smart Grid
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)We investigate the impact of the wireless network's physical layer (PHY) security and reliability on demand-side management operation in the smart grid. We assume that consumers communicate their energy demands with the ... -
Securing Untrusted RF-EH Relay Networks Using Cooperative Jamming Signals
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)We propose a new scheme to secure a wireless-powered untrusted cooperative-communication network, where a legitimate source node (Alice) transmits her information messages to a legitimate destination node (Bob) through the ... -
Security-Enhanced SC-FDMA Transmissions Using Temporal Artificial-Noise and Secret Key Aided Schemes
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)We investigate the physical-layer security of uplink single-carrier frequency-division multiple-access (SC-FDMA) systems. Multiple users, Alices, send confidential messages to a common legitimate base-station, Bob, in the ... -
Sparsity-aware Multiple Relay Selection In Large Decode-and-forward Relay Networks
( Hamad bin Khalifa University Press (HBKU Press) , 2014 , Conference Paper)Cooperative communication is a promising technology that has attracted significant attention recently thanks to its ability to achieve spatial diversity in wireless networks with only single-antenna nodes. The different ... -
Sparsity-Based Joint NBI and impulse noise mitigation in hybrid PLC-Wireless transmissions
( IEEE , 2018 , Article)We propose a new sparsity-aware framework to model and mitigate the joint effects of narrow-band interference (NBI) and impulsive noise (IN) in hybrid powerline and unlicensed wireless communication systems. The proposed ... -
Wiretap TDMA Networks with Energy-Harvesting Rechargeable-Battery Buffered Sources
( IEEE , 2019 , Article)We investigate the physical-layer security of an uplink wireless time-division multiple-access channel with energy-harvesting source nodes. We consider a set of source nodes equipped with rechargeable batteries and information ...
