Electrical Engineering: Recent submissions
Now showing items 701-720 of 2840
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Joint secured and robust technique for OFDM systems
( IEEE , 2013 , Conference)This work presents a novel technique for joint secured and robust transmission of orthogonal frequency division multiplexing (OFDM) based communication systems. The proposed system is implemented by developing a new OFDM ... -
Sparsifying dictionary analysis for FIR MIMO channel-shortening equalizers
( IEEE , 2016 , Conference)In this paper, we propose a general framework that transforms the problems of designing sparse finite-impulse response channel-shortening equalizers and target impulse response filters for multiple antenna systems into the ... -
WFlatnet: Introducing wireless in flatnet data center network
( IEEE , 2015 , Conference)The basic challenge of data centers is how to interconnect a huge number of servers while guaranteeing the performance of the network. Flatnet is a promising data center architecture that has proved its efficiency to connect ... -
A survey of wireless data center networks
( IEEE , 2015 , Conference)Data centers are becoming more and more popular for a wide variety of applications. However, the efficiency of data centers are restricted by many issues like cabling and maintenance problems in addition to performance ... -
A Novel OFDM Waveform with Enhanced Physical Layer Security
( IEEE , 2021 , Article)This letter proposes a secure orthogonal frequency division multiplexing (OFDM) waveform based on two physical-layer secrecy enhancing methods. The first method is time-domain pre-coding that involves interleaving and ... -
Secure AF Relaying in Power-Constrained UAV Networks
( IEEE , 2021 , Conference)This paper proposes a secure amplify-and-forward (AF) relaying scheme in unmanned aerial vehicle (UAV) networks while accounting for the power consumption limitations of UAVs. Since a UAV's battery life is limited, we ... -
Secrecy Performance of Full-Duplex Jamming and Reception under I/Q Imbalance
( IEEE , 2021 , Article)Investigating the physical layer security performance of full-duplex (FD) radio transceivers has been the subject of numerous research studies. However, self-interference cancellation that enables full exploitation of FD ... -
Employing Information Theoretic Metrics with Data-Driven Occupancy Detection Approaches: A Comparative Analysis
( IEEE , 2022 , Conference)Building occupancy data helps increase energy management systems' performance, enabling lower energy use while preserving occupant comfort. The focus of this study is employing environmental data (e.g., including but not ... -
I/Q imbalance in multiple beamforming {OFDM} transceivers: SINR analysis and digital baseband compensation
( IEEE , 2013 , Article)In this paper, we start by investigating the impact of joint transmit-receive I/Q imbalance on the performance of direct-conversion beamforming OFDM transceivers. We derive a new analytical expression for the average ... -
Modelling and compensation of frequency-dependent I/Q imbalance in multiple beamforming OFDM transceivers
( IEEE , 2012 , Conference)In this paper, we investigate the effects of asymmetric frequency-dependent joint transmit-receive I/Q imbalance on the performance of multiple beamforming MIMO OFDM systems. We derive the throughput-maximizing TX/RX ... -
A USRP-based experimental testbed for OFDM systems impaired by I/Q imbalance
( IEEE , 2013 , Conference)In this paper, an experimental testbed for packet based OFDM systems is proposed using USRP RF front-ends. I/Q imbalance estimation and compensation algorithms are implemented at the receiver by manually injecting I/Q ... -
Digital baseband compensation of frequency-dependent joint TX/RX I/Q imbalance in beamforming MIMO OFDM transceivers
( IEEE , 2012 , Conference)In this paper, we investigate the effects of asymmetric frequency-dependent joint transmit-receive I/Q imbalance on the performance of beamforming MIMO-OFDM systems. We derive the throughput-maximizing transmit/receive ... -
SINR analysis for beamforming OFDM systems under joint transmit-receive I/Q imbalance
( IEEE , 2012 , Conference)In this paper, we derive an analytical expression for the subcarrier average SINR of a beamforming OFDM system in the presence of joint transmit-receive I/Q imbalance. The derived expression quantifies the impact of the ... -
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 ... -
Towards bandwidth guaranteed energy efficient data center networking
( Springer , 2015 , Article)The data center network connecting the servers in a data center plays a crucial role in orchestrating the infrastructure to deliver peak performance to users. In order to meet high performance and reliability requirements, ... -
Queue Discharge at Freeway On-Ramps Using Coordinated Operation of a Ramp Meter and an Upstream Traffic Signal
( Elsevier , 2020 , Conference)Ramp metering is an effective way of maintaining optimum traffic conditions and mitigating congestion on freeways. Several strategies for ramp metering exist in the literature. They are typically based on the freeway traffic ... -
Decentralized multiuser diversity with opportunistic packet transmission in MIMO wireless sensor networks
( Elsevier , 2013 , Article)In this study, we consider a single-hop wireless sensor network where both the sensor nodes and the controller node have multiple antennas. We focus on single beam opportunistic communication and propose a threshold-based ... -
Integration of federated machine learning and blockchain for the provision of secure big data analytics for Internet of Things
( Elsevier , 2021 , Article)Big data enables the optimization of complex supply chains through Machine Learning (ML)-based data analytics. However, data analytics comes with challenges such as the loss of control and privacy leading to increased risk ... -
A threshold-based opportunistic MAC protocol for MIMO wireless sensor networks
( IEEE , 2012 , Conference)In this paper, we consider a single-hop wireless sensor network where both the sensor nodes and the controller node have multiple antennas. We focus on single beam opportunistic communication and propose a threshold-based ... -
Exploiting sparsity of relay-assisted cognitive radio networks
( IEEE , 2015 , Conference)We propose a novel protocol for secondary users based on compressive sensing principles. The secondary user assigned to one of the primary frequency bands is aided by a set of nearby secondary users, which we refer to as ...
