Now showing items 81-100 of 2611

    • Experimental Delay Tests in Causal THz Channel Model 

      Wu, Zhaona; Umebayashi, Kenta; Lehtomäki, Janne; Zorba, Nizar ( Springer , 2024 , Article)
      In traditional radio propagation, the arrival time of the signal at the receiver from the transmitter is the propagation delay, which is given by the distance divided by the light speed, in the line of sight (LoS) scenario. ...
    • Crowdsensing based prompt emergency discovery: A sequential detection approach 

      El Khatib, Rawan F.; Zorba, Nizar; Hassanein, Hossam S. ( Institution of Engineering and Technology , 2019 , Conference Paper)
      The growth in the number of smart devices has mobilized the rise of CrowdSensing (CS) as an enabler of smart cities, where state-of-the-art technologies are utilized to improve citizens' quality of life. CS is a novel ...
    • CrowdDelegate: An MCS-based approach for improving retail labor cost-efficiency 

      Azmy, Sherif B.; Zorba, Nizar; Hassanein, Hossam S. ( Institution of Engineering and Technology , 2019 , Conference Paper)
      Following the revolutionary changes the Internet of Things (IoT) has introduced to sensor networks, the Mobile Crowd Sensing (MCS) paradigm aims to utilize people and their smartphones as an extended instrument to sense. ...
    • A blockchain-based IoT networks-on-demand protocol for responsive smart city applications 

      Alkalbani, Mohamed; Hamdaoui, Bechir; Zorba, Nizar; Rayes, Ammar ( Institution of Engineering and Technology , 2019 , Conference Paper)
      This paper proposes a distributed resource sharing protocol for enabling dynamic deployment of IoT networks on-demand in smart cities. The proposed protocol leverages Blockchain technology to: (i) enable distributed and ...
    • Delay analysis of converged optical-wireless networks with quality of service support 

      Vardakas, John S.; Moscholios, Ioannis D.; Zorba, Nizar; Logothetis, Michael D.; Verikoukis, Christos V. ( Institution of Engineering and Technology , 2014 , Article)
      The convergence of two popular access technologies, namely Worldwide interoperability for Microwave Access (WiMAX) and passive optical network (PON) is a promising access solution that combines the mobility feature of WiMAX ...
    • Robust Positioning for Road Information Services in Challenging Environments 

      El-Wakeel, Amr S.; Osman, Abdalla; Zorba, Nizar; Hassanein, Hossam S.; Noureldin, Aboelmagd ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)
      Next-generation Intelligent Transportation Systems (ITS) of future road traffic monitoring will be required to provide reports on traffic status, road conditions, and driver behaviour. Road surface anomalies contribute to ...
    • Performance analysis of M2M communication networks for QoS-differentiated smart grid applications 

      Vardakas, John S.; Zorba, Nizar; Skianis, Charalabos; Verikoukis, Christos V. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      We study the performance of Machine-to-Machine (M2M) communications in Long Term Evolution Advanced (LTE-A) networks. The proposed analysis is applied to the random access procedure within LTE-A for the calculation of the ...
    • Joint uplink-downlink carrier aggregation scheme in LTE-A 

      Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)
      Long Term Evolution Advanced (LTE-A) supports a wide range of applications that continuously demand for more resources in order to satisfy the customers' needs. Starting from release 10, Carrier Aggregation (CA) technology ...
    • A Survey on Demand Response Programs in Smart Grids: Pricing Methods and Optimization Algorithms 

      Vardakas, John S.; Zorba, Nizar; Verikoukis, Christos V. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)
      The smart grid concept continues to evolve and various methods have been developed to enhance the energy efficiency of the electricity infrastructure. Demand Response (DR) is considered as the most cost-effective and ...
    • Adaptive Cooperative Network Coding based MAC protocol for device-to-device communication 

      Datsika, Eftychia; Antonopoulos, Angelos; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)
      Device-to-Device (D2D) communication allows the direct connection of mobile devices in a cellular network. In D2D networking, cooperative communication is inherent due to the proximity of the devices that are able to ...
    • Crowd management 

      Hassanein, Hossam; Zorba, Nizar; Han, Shuai; Kanhere, Salil S.; Shukair, Mutaz ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Other)
      The articles in this special section focus on crowd management in areas that are increasingly experiencing growths in populations. In its 2018 Revision of the World Urbanization Prospects, the United Nations projects that ...
    • Drones for Sheep Livestock Monitoring 

      Al-Thani, Najla; Albuainain, Alreem; Alnaimi, Fatima; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)
      Nowadays, Unmanned Aerial Vehicles (UAV) have been included in many more applications such as package delivery, traffic monitoring, etc; and one of its potential applications is agriculture. This work demonstrates the ...
    • Blockchains for Scalable IoT Management, Access, and Accountability 

      Hamdaoui, Bechir; Rayes, Ammar; Zorba, Nizar; Song, Lingyang; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Other)
      The articles in this special section focuses on blockchain for scalable Internet of Things (IoT) management, access, and accountability. The articles highlight new blockchain architectures and techniques that can be leveraged ...
    • On The Performance of Non-Orthogonal Multiple Access Considering Random Waypoint Mobility Model 

      Alzard, Mohannad; Althunibat, Saud; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)
      Non-Orthogonal Multiple Access (NOMA) has been widely considered as an efficient multiple access scheme for future wireless networks. This is due to the promising performance of NOMA in terms of the larger number of served ...
    • Performance Analysis of Resource Allocation in THz-Based Subcarrier Index Modulation Systems for Mobile Users 

      Alzard, Mohannad; Althunibat, Saud; Umebayashi, Kenta; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)
      The recent demand for connections to a huge number of users with very high data rates have motivated research communities to investigate communications into the higher frequency bands, such as millimeter waves and TeraHertz ...
    • Quality Estimation for Scarce Scenarios within Mobile Crowdsensing Systems 

      Azmy, Sherif B.; Zorba, Nizar; Hassanein, Hossam S. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)
      Mobile crowdsensing (MCS) is a paradigm that exploits the presence of a crowd of moving human participants to acquire, or generate, data from their environment. As a part of the Internet-of-Things (IoT) paradigm, MCS serves ...
    • Optimal Proactive Resource Allocation at the Extreme Edge 

      El Khatib, Rawan F.; Elsayed, Sara A.; Zorba, Nizar; Hassanein, Hossam S. ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Conference Paper)
      Edge Computing (EC) has emerged as a key enabling paradigm for latency-critical and/or data-intensive applications. Recently, recycling abundant yet underutilized computational resources of the Extreme Edge Devices (EEDs), ...
    • IoT-Based Crowd Management Framework for Departure Control and Navigation 

      Elbery, Ahmed; Hassanein, Hossam S.; Zorba, Nizar; Rakha, Hesham A. ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)
      This paper exploits crowdsensing to propose a novel IoT-Based Vehicle Crowd Management (IoT-VCM) framework. By efficiently managing vehicle departures and navigation, the IoT-VCM clears the network in a shorter time, while ...
    • Time Domain Propagation Characteristics with Causal Channel Model for Terahertz Band 

      Wu, Zhaona; Ebisawa, Hiroto; Umebayashi, Kenta; Lehtomäki, Janne; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Conference Paper)
      In recent years, as more devices are connected to wireless communication systems, the demand for spectrum has increased. As conventional spectrum resources are limited, the THz band becomes an interesting option of more ...
    • Dynamic Spectrum Sharing in the Age of Millimeter-Wave Spectrum Access 

      Hamdaoui, Bechir; Khalfi, Bassem; Zorba, Nizar ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)
      Next-generation wireless networks are facing spectrum shortage challenges, mainly due to, among other factors, the projected massive numbers of IoT connections and the emerging bandwidth-hungry applications that such ...