Browsing by Author "Hamdaoui, Bechir"
Now showing items 21-40 of 42
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Exploiting wideband spectrum occupancy heterogeneity for weighted compressive spectrum sensing
Khalfi, Bassem; Hamdaoui, Bechir; Guizani, Mohsen; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Compressive sampling has shown great potential for making wideband spectrum sensing possible at sub-Nyquist sampling rates. As a result, there have recently been research efforts that aimed to develop techniques that ... -
Forced spectrum access termination probability analysis under restricted channel handoff
NoroozOliaee, MohammadJavad; Hamdaoui, Bechir; Znati, Taieb; Guizani, Mohsen (2012 , Conference Paper)Most existing works on cognitive radio networks assume that cognitive (or secondary) users are capable of switching/jumping to any available channel, regardless of the frequency gap between the target and the current ... -
Handoff-aware cross-layer assisted multi-path TCP for proactive congestion control in mobile heterogeneous wireless networks
Sinky, Hassan; Hamdaoui, Bechir; Guizani, Mohsen ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Multi-Path TCP (MPTCP) is a new evolution of TCP that enables a single MPTCP connection to use multiple TCP subflows transparently to applications. Each subflow runs independently allowing the connection to be maintained ... -
Improving macrocell downlink throughput in rayleigh fading channel environment through femtocell user cooperation
Zaid, Adem M.; Hamdaoui, Bechir; Cheng, Xiuzhen; Znati, Taieb; Guizani, Mohsen (2013 , Article)This paper studies cooperative techniques that rely on femtocell user diversity to improve the downlink communication quality of macrocell users. We analytically derive and evaluate the achievable performance of these ... -
Joint data and power transfer optimization for energy harvesting wireless networks
Khalfi, Bassem; Hamdaoui, Bechir; Ghorbel, Mahdi Ben; Guizani, Mohsen; Zhang, Xi ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Energy harvesting techniques emerge as a potential solution for prolonging the lifetime of the energy-constrained mobile wireless devices. In this paper, we focus on radio frequency (RF) energy harvesting for multiuser ... -
Joint resource scheduling and peak power shaving for cloud data centers with distributed Uninterruptible power Supply
Alanazi, Sultan; Dabbagh, Mehiar; Hamdaoui, Bechir; Guizani, Mohsen; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)The grid company enforces high penalties for the peak power demands of cloud data centers. These high penalties result in high electricity bill that can be avoided by relying on the servers' Uninterruptible Power Supply ... -
Joint user-channel assignment for efficient use of renewable energy in hybrid powered communication systems
Ben Ghorbel, Mahdi; Touzri, Taha; Hamdaoui, Bechir; Guizani, Mohsen; Khalfi, Bassem ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, we introduce a new green resource allocation problem using hybrid powering of the communication system from renewable and non-renewable sources. The objective is to efficiently allocate the power delivered ... -
Malicious-proof and fair credit-based resource allocation techniques for DSA systems
Alshammari, Tamara; Hamdaoui, Bechir; Guizani, Mohsen; Rayes, Ammar ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)We propose a credit-based resource allocation technique for dynamic spectrum access that is robust against malicious and selfish behaviors and ensures good overall system fairness performance while also allowing spectrum ... -
Maximizing secondary-user satisfaction in large-scale DSA systems through distributed team cooperation
NoroozOliaee, MohammadJavad; Hamdaoui, Bechir; Guizani, Mohsen (2012 , Article)We develop resource and service management techniques to support secondary users (\su s) with QoS requirements in large-scale distributed dynamic spectrum access (\osa) systems. The proposed techniques empower \su s to ... -
Online assignment and placement of cloud task requests with heterogeneous requirements
Dabbagh, Mehiar; Hamdaoui, Bechir; Guizani, Mohsen; Rayes, Ammar ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Managing cloud resources in a way that reduces the consumed energy while also meeting clients demands is a challenging task. In this paper, we propose an energy-aware resource allocation framework that: i) places the ... -
Online multi-resource scheduling for minimum task completion time in cloud servers
NoroozOliaee, MohammadJavad; Hamdaoui, Bechir; Guizani, Mohsen; Ben Ghorbel, Mahdi ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)We design a simple and efficient online scheme for scheduling cloud tasks requesting multiple resources, such as CPU and memory. The proposed scheme reduces the queuing delay of the cloud tasks by accounting for their ... -
Optimal energy exchange scheme for energy efficient hybrid-powered communication systems
Ben Ghorbel, Mahdi; Guizani, Mohsen; Mohamed, Amr; Hamdaoui, Bechir ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)The spread of the wireless communication devices resulted in a remarkable growth of power consumption for telecommunication systems to satisfy the users' demands. Thus, new revolutionary solutions are needed to enhance ... -
Optimal power allocation for smart-grid powered point-to-point cognitive radio system
Khalfi, Bassem; Ben Ghorbel, Mahdi; Hamdaoui, Bechir; Guizani, Mohsen ( IEEE , 2014 , Conference Paper)This paper proposes an optimal power allocation analysis for a point-to-point wireless system when powered by a smart grid. We propose to minimize the total power consumption cost while ensuring individual and total ... -
Optimizing joint data and power transfer in energy harvesting multiuser wireless networks
Khalfi, Bassem; Hamdaoui, Bechir; Ghorbel, Mahdi Ben; Guizani, Mohsen; Zhang Xi.; Zorba, Nizar... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Energy harvesting emerges as a potential solution for prolonging the lifetime of the energy-constrained mobile wireless devices. In this paper, we focus on radio frequency (RF) energy harvesting for multiuser multicarrier ... -
Overcoming user selfishness in DSA systems through credit-based resource allocation
Alshammari, Tamara; Hamdaoui, Bechir; Guizani, Mohsen; Rayes, Ammar ( IEEE , 2014 , Conference Paper)We propose a credit-based resource allocation technique for wireless systems with dynamic spectrum access (DSA) capability, such as multichannel wireless sensor networks. The proposed technique is robust against selfish ... -
Power allocation analysis for dynamic power utility in cognitive radio systems
Ghorbel, Mahdi Ben; Khalfi, Bassem; Hamdaoui, Bechir; Guizani, Mohsen ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The focus of this paper is to investigate the fundamental limits of power allocation when taking into account a dynamic power pricing scheme. This paper proposes an optimal power allocation analysis for wireless systems ... -
Reducing data center energy consumption through peak shaving and locked-in energy avoidance
Alanazi, Sultan; Dabbagh, Mehiar; Hamdaoui, Bechir; Guizani, Mohsen; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)The grid company enforces high penalties for the peak power demands of cloud data centers. These penalties result in high electricity bills that can be avoided by relying on the servers' uninterruptible power supply (UPS) ... -
Release-time aware VM placement
Dabbagh, Mehiar; Hamdaoui, Bechir; Guizani, Mohsen; Rayes, Ammar ( IEEE , 2014 , Conference Paper)Consolidating virtual machines (VMs) on as few physical machines (PMs) as possible so as to turn into sleep as many PMs as possible can make significant energy savings in cloud centers. Although traditional online bin ... -
Resources allocation for large-scale dynamic spectrum access system using particle filtering
Ben Ghorbel, Mahdi; Khalfi, Bassem; Hamdaoui, Bechir; Guizani, Mohsen ( IEEE , 2014 , Conference Paper)This paper proposes an efficient spectrum and power allocation solution for a large scale dynamic spectrum access (DSA) systems. Unlike conventional methods relying on optimization techniques which need huge computational ... -
Scalable spectrum database construction mechanisms for efficient wideband spectrum access management
Khalfi, Bassem; Hamdaoui, Bechir; Guizani, Mohsen; Elmaghbub, Abdurrahman ( Elsevier B.V. , 2021 , Article)We propose a novel framework for enabling scalable database-driven dynamic spectrum access and sharing of heterogeneous wideband spectrum. The proposed framework consists of two complementary approaches that exploit the ...