Search Constraints

Start Over
Filtering by: Creator Johnsen, S. J. Remove constraint Creator: Johnsen, S. J. Academic Affiliation Electrical Engineering and Computer Science Remove constraint Academic Affiliation: Electrical Engineering and Computer Science Advisor Hamdaoui, Bechir Remove constraint Advisor: Hamdaoui, Bechir

Search Results

  • Location Privacy Preservation for Optimal Sensing in Cognitive Radio Networks

    Creator:
    Grissa, Mohamed
    Abstract:
    Cognitive Radio Networks (CRNs) enable opportunistic access to the licensed channel resources by allowing unlicensed users to exploit vacant channel opportunities. One effective technique through which unlicensed users, often referred to as Secondary Users (SUs), acquire whether a channel is vacant is cooperative spectrum sensing. Despite its effectiveness in enabling...
    Resource Type:
    Masters Thesis
    Full Text:
    ) ∈ G2 , 1 ≤ j ≤ ly q and permutes ct’s and zj ’s as c1, c2, . . . , cγ which are sent back to X . X

  • Location Privacy-Preserving Strategies for Secondary Spectrum Use

    Creator:
    Grissa, Mohamed
    Abstract:
    The scarcity of wireless spectrum resources and the overwhelming demand for wireless broadband resources have prompted industry, government agencies and academia within the wireless communities to develop and come up with effective solutions that can make additional spectrum available for broadband data. As part of these ongoing efforts, cognitive radio...
    Resource Type:
    Dissertation
    Full Text:
    available for broadband data. As part of these ongoing efforts, cognitive radio networks (CRN s) have

  • Towards Long Short Term Memory Based Proactive In-Network Caching for Cloud RANs

    Creator:
    Tirupathi, Chittibabu
    Abstract:
    The rapid population growth in large urban cities has led to an unprecedented increase in both the number and the diversity of wireless devices and applications with varying quality of service requirements in terms of latency and data rates. LinkNYC is an example of an urban communication network infrastructure, which...
    Resource Type:
    Masters Thesis
    Full Text:
    access delay and traffic congestion. Our proposed scheme also uses the Long Short Term Memory (LSTM)’s

  • Delay Performance Evaluation of the IEC 61850 Standard in Power Transmission Substations

    Creator:
    Safdar, Salman
    Abstract:
    Substations are a crucial element at the transmission and distribution level of electric power systems. The primary substation equipment (power transformers and high voltage switching equipment) is used to transfer and transform electric energy by stepping up or down the voltage in transmission substations. Secondary equipment (such as IEDs, Intelligent...
    Resource Type:
    Masters Thesis
    Full Text:
    this work, the IEC 61850’s delay performance is evaluated at a transmission substation between

  • Efficient Spectrum Sensing and Sharing Techniques for Dynamic Wideband Spectrum Access

    Creator:
    Khalfi, Bassem
    Abstract:
    Besides enabling an enhanced mobile broadband access, fifth-generation (5G) wireless mobile networks are envisioned to support the connectivity of massive, heterogeneous Internet of Things (IoT) devices. Connecting these devices through 5G systems and providing them with their needed data rates require huge amounts of spectrum and power resources, thus calling...
    Resource Type:
    Dissertation
    Full Text:
    spectrum, where all bands are assumed to have similar primary users (PU)s traffic characteristics whereas

  • One-to-many node disjoint paths routing in generalized hypercube, dense Gaussian, and hexagonal mesh networks

    Creator:
    Alsaleh, Omar I.
    Abstract:
    Routing from a single source node to multiple destination nodes using node disjoint paths (NDP) has many important applications in parallel systems. For example, if a source node wants to send distinct messages to distinct destination nodes, then the one-to-many NDP routing is useful. Unlike parallel systems with shared-memory, each...
    Resource Type:
    Dissertation
    Full Text:
    follows: given a source node s, a set of distinct destination nodes T = {t1, t2, . . . , tℓ}, where s

  • Coordinating secondary-user behaviors for inelastic traffic reward maximization in large-scale DSA networks

    Creator:
    NoroozOliaee, MohammadJavad
    Abstract:
    We develop efficient coordination techniques that support inelastic traffic in large-scale distributed dynamic spectrum access DSA networks. By means of any learning algorithm, the proposed techniques enable DSA users to locate and exploit spectrum opportunities effectively, thereby increasing their achieved throughput (or "rewards" to be more general). Basically, learning algorithms...
    Resource Type:
    Masters Thesis
    Full Text:
    and for simpli ity, let us assume that Sj = S for j = 1, 2, · · · ,m. Let n denote the total number

  • Joint Resource Scheduling and Peak Power Shaving for Cloud Data Centers with Distributed Uninterruptible Power Supply

    Creator:
    AlAnazi, Sultan (Sultan Abdulaziz)
    Abstract:
    The grid company enforces high penalties for the peak power demands of cloud data centers. These high penalties result in high electricity bills that can be avoided by relying on the servers' Uninterruptible Power Supply (UPS) as a source of energy during peak load periods. This thesis proposes a management...
    Resource Type:
    Masters Thesis
    Full Text:
    score S(j) for the OFF server j is calculated as follows1: S(j) = α× ScpuCap(j) + (1− α)× SUPS(j

  • Design and Analysis of Distributed Resource Allocation Techniques for Large-Scale Dynamic Spectrum Access Networks

    Creator:
    NoroozOliaee, MohammadJavad
    Abstract:
    The widespread use of wireless devices that we have recently been witnessing, such as smartphones, tablets, laptops, and wirelessly accessible devices in general, is causing an unprecedented growth in the required amount of the wireless radio spectrum. On the other hand, the spectrum resource has, for the last several decades,...
    Resource Type:
    Dissertation
    Full Text:
    objective functions: intrinsic choice (gi = rj) and global choice (gi = G) for R = 2, β = 2, Vj = 20 for j

  • Energy-efficient routing for delay-constrained data traffic in linear wireless sensor networks

    Creator:
    Alesaimi, Hani
    Abstract:
    Linear wireless sensor networks (LWSN) are special class of wireless sensor networks where sensor nodes are deployed in a straight line. Monitoring industrial pipelines, railroads, tunnels, power lines, and borders are applications of LWSNs. Wireless sensors are tiny devices with limited energy resources; therefore, efficient energy routing in LWSNs is...
    Resource Type:
    Masters Thesis
    Full Text:
    fow (i, j )s k ∈ F , let xij denote the forwarding data rates in bits per second and X = [xij k ]1

  • Jamming Attack Resiliency and Performance Analysis of Cognitive Radio Communication Networks

    Creator:
    Adem, Nadia
    Abstract:
    Cognitive radio technology emerges as a promising solution for overcoming shortage and inefficient use of spectrum resources. In cognitive radio networks, secondary users, which are users equipped with cognitive radios, can opportunistically access spectrum assigned to primary users, the spectrum license holders. Although it improves spectrum utilization efficiency, this opportunistic...
    Resource Type:
    Dissertation
    Full Text:
    being served when the ith packet arrives, then Ri corresponds to the remaining time until packet j

  • Architectures and algorithms for dynamic overlay networks

    Creator:
    Abdelwahab, Sherif
    Abstract:
    Most of today’s Internet of Things (IoT) applications assume that data will be moved offdevices into centralized cloud platforms. While existing IoT systems leverage cloud-based analytics for meaningful data reasoning, the assumption that data should always be moved off the devices is problematic. The amount of data to be moved...
    Resource Type:
    Dissertation
    Full Text:
    ] computed to a 0.1 error at 95% confidence. . 43 3.6 Average energy consumption per replica in [J] computed

  • Leveraging Compressive Sampling and Machine Learning for Adaptive and Cooperative Wideband Spectrum Sensing

    Creator:
    Zaid, Adem
    Abstract:
    This thesis proposes a novel technique that exploits spectrum occupancy behaviors inherent to wideband spectrum access to enable efficient cooperative spectrum sensing. The proposed technique reduces the number of required sensing measurements while accurately recovering spectrum occupancy information. It does so by leveraging compressive sampling theory to exploit the block-like...
    Resource Type:
    Masters Thesis
    Full Text:
    400 500 Time Index 0 2 4 6 8 R ep or ti n g E n er gy (J ou le s) Proposed approach

  • Cross-layer aware routing approach for lifetime maximization in wireless sensor networks with multiple sinks

    Creator:
    Hamid, Arwa Zakaria
    Abstract:
    In wireless sensor networks (WSNs) nodes are battery powered. Therefore, the available energy resources of sensor nodes should be managed efficiently in order to increase the network lifetime. As a result, researchers have proposed routing schemes in order to maximize network lifetime. Even though these schemes increase the network lifetime,...
    Resource Type:
    Masters Thesis
    Full Text:
    distinct transmitter node and a receiver node (i, j) such that j is within i′s transmission range, (i.e.,j

  • Hybrid, Proactive In-Network Caching for Mobile On-Demand Video Streaming

    Creator:
    Abuhadra, Ragda
    Abstract:
    Mobile video streaming has become an essential application in mobile wireless networks,making up most of the mobile data of today’s Internet traffic. Studies have shown that mobile video data is projected to make up about 78 percent of the global mobile data traffic, and that global mobile data traffic is...
    Resource Type:
    Masters Thesis
    Full Text:
    . [5] J. G. Andrews, H. Claussen, M. Dohler, S. Rangan, and M. C. Reed, “Femtocells: Past, present, and

  • Resource allocation methods for quality-of-service provisioning in heterogeneous wireless networks

    Creator:
    Chakchouk, Nessrine
    Abstract:
    The increased use of mobile wireless devices that we have recently been witnessing, such as smartphones, tablets, e-readers, and WiFi enabled devices in general, is driving an unprecedented increase in the amount of data traffic. This fast market adoption of the wireless technology along with the tremendous success of multimedia...
    Resource Type:
    Dissertation
    Full Text:
    a transmission from node i to node j to be successful over the directed link (i, j) using channel k

  • Opportunistic bandwidth sharing through reinforcement learning

    Creator:
    Venkatraman, Pavithra
    Abstract:
    The enormous success of wireless technology has recently led to an explosive demand for, and hence a shortage of, bandwidth resources. This expected shortage problem is reported to be primarily due to the inefficient, static nature of current spectrum allocation methods. As an initial step towards solving this shortage problem,...
    Resource Type:
    Masters Thesis
    Full Text:
    (s, ai)(t+ 1) = Q(s, ai)(t) + xi(t)α[( ∑j=m j=1 yj(t) ∑k=m k=1 (raijk)(zk(t)))−Q(s, ai)(t

  • Data acquisition techniques for next generation wireless sensor networks

    Creator:
    Ehsan, Samina
    Abstract:
    The meteoric rise and prevalent usage of wireless networking technologies for mobile communication applications have captured the attention of media and imagination of public in the recent decade. One such proliferation is experienced in Wireless Sensor Networks (WSNs), where multimedia enabled elements are fused with integrated sensors to empower tightly...
    Resource Type:
    Dissertation
    Full Text:
    every flow(i, j) ∈ F , let Ψij denote the set of all flows that cannot be active if the flow(i, j) is

  • Quality of Experience Assurance Methods in Mobile Heterogeneous Wireless Communication Systems

    Creator:
    Sinky, Hassan Hussein
    Abstract:
    The proliferation of mobile users and internet content has advanced a plethora of research areas. Among these areas include mobile networks, transport layer protocols, and smart cities. Research shows that global mobile data traffic will increase sevenfold reaching 49 exabytes per month by 2021, most of which will be mobile...
    Resource Type:
    Dissertation
    Full Text:
    indexes as a function of s . . . . . . . . . . . . . . . . . 115 5.9 (a) sLFU performance as CDC

  • Collaborative Filtering-Based In-Network Content Placement and Caching for 5G Networks

    Creator:
    Alorayj, Haya
    Abstract:
    As the number of wireless devices, the demand for high data rates, and the need for always-on connectivity are growing and becoming more stringent with the evolvement and emergence of 5G systems, network engineers and researchers are being faced with new unique challenges that need to be addressed. Among many...
    Resource Type:
    Masters Thesis
    Full Text:
    and each CD, the sum of all values of the attributes is equal to one. That is, ∑I j=1Aj = 1 for

  • The Impact of Network Topology on Software Defined Network Performance

    Creator:
    Alhamar, Sara N.
    Abstract:
    Software Defined Network (SDN) is a new networking concept in which the data plane is decoupled from the control plane. Due to the huge demand on network resources and the rapidly increasing numbers of devices needing to be connected to the network, SDN paradigm has emerged as a potential solution...
    Resource Type:
    Masters Thesis
    Full Text:
    ://sdninsights.org/. [Accessed: 05-Jun-2018]. [29] R. Montero, F. Agraz, A. Pagès, J. Perelló and S. Spadaro

  • Energy-Efficient Resource Management Techniques for Cloud Data Centers

    Creator:
    Dabbagh, Mehiar
    Abstract:
    Energy consumption has become a great deal for cloud service providers due to financial as well as environmental concerns. Studies show that cloud servers operate, most of the time, at only between 10% and 50% of their maximal utilizations. These same studies also show that servers that are kept ON...
    Resource Type:
    Dissertation
    Full Text:
    Heuristic ( Non, Nsleep ) . . . . . . . . . . . . . . . . . 103 3 LimitedHorizonControl ( j, ~Dj , Φ, w

  • End-to-end network throughput enhancement through physical-layer network coding

    Creator:
    Maeouf, Sofean Ahmed
    Abstract:
    Physical-Layer Network Coding (PNC) is a promising technique that has great potentials for improving the achievable data rates of end-to-end flows through higher packet transmission rates, thereby increasing the overall network throughput. In this thesis, we study the performance of the PNC transmission techniques for unidirectional end-to-end flows in multi-hop...
    Resource Type:
    Masters Thesis
    Full Text:
    information bits of node j for j = 1, 3, and w is the carrier frequency. Thus, node 2 receives two baseband

  • Leveraging Hardware-Impaired Out-of-Band Information Through Deep Neural Networks for Robust Wireless Device Classification

    Creator:
    Elmaghbub, Abdurrahman A.
    Abstract:
    Wireless device classification techniques play a key role in promoting emerging wireless applications such as allowing spectrum regulatory agencies to enforce their access policies and enabling network administrators to control access and prevent impersonation attacks to their wireless networks. Leveraging spectrum distortions of transmitted RF signals, caused by transceiver hardware...
    Resource Type:
    Masters Thesis
    Full Text:
    ) sin(wct+ ∆θ)]× [cos(wct)− j sin(wct)] (2.5) After some math manipulations and clearing the terms

  • On the domain generalizability of RF fingerprints through multifractal dimension representation

    Creator:
    Johnson, Benjamin
    Abstract:
    RF data-driven device fingerprinting through the use of deep learning has recently surfaced as a possible method for secure device identification and authentication. Traditional approaches are commonly susceptible to the domain adaptation problem where a model trained on data from one domain performs badly when tested on data from a...
    Resource Type:
    Masters Thesis
    Full Text:
    RF transmissions. 36 Bibliography [1] J. Zhang, S. Rajendran, Z. Sun, R

  • Deep Learning Based Automatic Modulation Classication for Wideband Access Using Cyclostationarity Analysis

    Creator:
    Mejri, Seifeddine
    Abstract:
    RF-based signal identification and classification has received growing attention during recent years due to its potential use in many application domains. Of particular interest is Automatic Modulation Classification (AMC), which has been useful in addressing various spectrum related challenges such as signal jamming, policy enforcement, and spectrum sharing. Adopting AMC...
    Resource Type:
    Capstone Project
    Full Text:
    final TSM expression is Ŝαx (f) = 1 M M−1∑ j=0 Ĩα(jN, f)e−i2παjN (3.4) where Ĩα(jN, f) is the

  • Enhancing macrocell downlink performance through femtocell user cooperation

    Creator:
    Zaid, Adem Mabruk
    Abstract:
    This thesis studies cooperative techniques that rely on femtocell user diversity to improve the downlink communication quality of macrocell users. We analytically analyze and evaluate the achievable performance of these techniques in the downlink of Rayleigh fading channels. We provide an approximation of both the bit-error rate (BER) and the...
    Resource Type:
    Masters Thesis
    Full Text:
    (i.e., during cooperation period), the MBS can concurrently transmit data to other macrocell user(s

  • Network Traffic-Driven Hybrid Learning for Classifying Seen and Unseen IoT Device Types

    Creator:
    Bao, Jiaqi
    Abstract:
    IoT networks can be viewed as collections of Internet-enabled physical devices and objects, embedded with sensor, actuator, computation, storage and communication components, that are capable of connecting and exchanging data to one another. In recent years, organizations have allowed more and more IoT devices to be connected to their networks,...
    Resource Type:
    Masters Thesis
    Full Text:
    , j. The connection is established when the client acknowledges with ACK bit and acknowledgment

  • Malicious-proof and fair credit-based resource allocation techniques for DSA systems

    Creator:
    AlShammari, Tamara
    Abstract:
    In this paper, we propose a credit-based resource allocation technique for dynamic spectrum access (DSA) systems that is robust against malicious and selfi sh behaviors and ensures good overall system fairness performance while also allowing spectrum users to achieve high amounts of service. We also propose a new objective function...
    Resource Type:
    Masters Thesis
    Full Text:
    -overlapping spectrum bands (or channels). We assume that each band j o�ers an amount of service denoted by Vj

  • Energy-Aware Gossip Techniques for Wireless Broadcasting

    Creator:
    Li, Tingzhi
    Abstract:
    The current state of research on gossip techniques for wireless broadcasting is very limited because past research efforts have mostly focused on using gossip techniques for multicast communication. On the other hand, those research efforts that have focused on using gossip techniques for wireless broadcast communications ignore energy efficiency and...
    Resource Type:
    Masters Thesis
    Full Text:
    distance between node i and node j by Dij and the average transmission range by r, and the Probability of

  • Leveraging Multiple Transmissions and Receptions for Channel-Agnostic Wireless Device Identification

    Creator:
    Basha, Nora
    Abstract:
    Enabling accurate and automated identification of wireless devices is critical for ensuring secure and authenticated data communication in large-scale networks such as IoT networks. In the aim of devising practical identification techniques that are immune to spoofing, hardware-driven RF fingerprinting using deep neural networks, which leverages the inevitable presence of...
    Resource Type:
    Masters Thesis
    Full Text:
    s(t) over an AWGN channel with zero mean and σ2 noise power, the received signal by the ith

  • iMAC : improved medium access control for multi-channel multi-hop wireless networks

    Creator:
    Maiya, Megha
    Abstract:
    Trends in wireless networks are increasingly pointing towards a future with multi-hop networks deployed in multi-channel environments. In this thesis, we present the design for iMAC—a protocol targeted at medium access control in such environments. iMAC uses control packets on a common control channel to faciliate a three-way handshake between...
    Resource Type:
    Masters Thesis
    Full Text:
    20 40 60 80 100 120 140 3 4 5 6 7 T hr ou gh pu t ( K B /s ) Number of

  • Source-Routed Multicast Schemes for Large-Scale Cloud Data Center Networks

    Creator:
    Alqahtani, Jarallah Ali m
    Abstract:
    Data centers (DCs) have been witnessing unprecedented growth in size, number and complexity in recent years. They consist of tens of thousands of servers interconnected by fast network switches, hosting and enabling numerous applications with various traffic characteristics and requirements. As a result, DC networks have been presented with several...
    Resource Type:
    Dissertation
    Full Text:
    inside the packets. In these approaches, a route between source and destination(s) is defined as the

  • Towards Deep Learning Model Portability for Domain-Agnostic Device Fingerprinting

    Creator:
    Gaskin, Jared
    Abstract:
    In recent years, RF (Radio Frequency) device fingerprinting using deep learning has emerged as a method of identifying devices solely by their RF transmissions. Conventional approaches to this type of device fingerprinting are not portable to different domains. That is, if a model for this purpose is trained on data...
    Resource Type:
    Masters Thesis
    Full Text:
    collected from transmitters using (a)(b)(c) Con- fig. 1, (d)(e)(f) Config. 2, (g)(h)(i) Config. 3, and (j)(k

  • Delay-Aware Resource Management Frameworks for Intelligent Vehicular Networks

    Creator:
    Almasari, Shahad A.
    Abstract:
    Autonomous vehicles bring great societal benefits but also potential impact and disruption to road safety, traffic congestion, and driving behaviors. One important technology that is indispensable to the success of such systems is vehicular networks. Vehicular networks provide the backbone for ensuring communication and connectivity among vehicles, all crucial to...
    Resource Type:
    Masters Thesis
    Full Text:
    decision-making. It includes [55]: • State: s is the state that defines the current situation (e.g., the

  • A Blockchains-Enabled Protocol for Distributed IoT Resource Sharing On-Demand

    Creator:
    Al-kalbani, Mohamed A.
    Abstract:
    In this thesis, we propose a Blockchain-based distributed protocol for enabling deployment of dynamic, on-demand IoT networks. Specifically, the proposed protocol leverages Blockchain technology to: (i) enable distributed and secure authentication, registration, and management of IoT devices; (ii) provide fast discovery of IoT resources and scalable and secure instantiation of...
    Resource Type:
    Masters Thesis
    Full Text:
    that entry. • Device ID: Serial number, IP address, MAC address, etc. • Resource Type(s): sensing

  • Implementation and performance measurement and analysis of OLSR protocol

    Creator:
    Sinky, Hassan Hussein
    Abstract:
    This paper provides a measurement-based performance evaluation of the Optimized Link State Routing (OLSR) protocol. Two versions of OLSR, OLSR-ETX and OLSR-ETT, are implemented and evaluated on a mesh network that we built from off-the-shelf commercial components. OLSR-ETX uses the Expected Transmission Count (ETX) metric whereas, OLSR-ETT uses the Expected...
    Resource Type:
    Masters Thesis
    Full Text:
    [13] S. Wu, C. Lin, Y. Tseng, and J. Sheu. A new multi-channel MAC protocol with on demmand channel