• A new MAC design in LTE for MIMO multiuser schemes 

      Imran, Reema; Zorba, Nizar; Yaacoub, Elias; Hassanein, Hossam S.; Verikoukis, Christos ( IEEE , 2013 , Conference)
      Long Term Evolution (LTE) supports closed-loop Multiple Input Multiple Output (MIMO) techniques, as a mechanism to improve system performance. An open topic since the appearance of MIMO is whether the feedback load, that ...
    • A novel energy saving MIMO mechanism in LTE systems 

      Imran, Reema; Shukair, Mutaz; Zorba, Nizar; Kubbar, Osama; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference)
      Long Term Evolution (LTE) supports closed-loop MIMO techniques to improve its performance, but in order to exploit multiuser MIMO channel capabilities, the design of an efficient MAC scheme that supports Multiuser MIMO is ...
    • A QoE-Aware Joint Resource Allocation and Dynamic Pricing Algorithm for Heterogeneous Networks 

      Trakas, Panagiotis; Adelantado, Ferran; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)
      The rise of third-party content providers and the introduction of numerous applications has been driving the growth of mobile data traffic in the past few years. The applications' various Quality of Service (QoS) requirements ...
    • A quality of experience-aware association algorithm for 5G heterogeneous networks 

      Trakas, Panagiotis; Adelantado, Ferran; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)
      The rise of Over The Top (OTT) content providers and the introduction of numerous applications has been driving the growth of mobile data traffic in the past few years. The applications' various Quality of Service (QoS) ...
    • 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)
      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 ...
    • An Energy Saving Strategy for LTE-A Multiantenna Systems 

      Imran, Reema; Shukair, Mutaz; Zorba, Nizar; Verikoukis, Christos ( Springer , 2015 , Article)
      Long Term Evolution - Advanced (LTE-A) supports closed-loop Multiple Input Multiple Output (MIMO) techniques to improve its performance, but in order to exploit multiuser (MU) MIMO channel capabilities, the design of an ...
    • 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 , Article)
      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 ...
    • Cross-Network Performance Analysis of Network Coding Aided Cooperative Outband D2D Communications 

      Datsika, Eftychia; Antonopoulos, Angelos; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)
      In long term evolution advanced (LTE-A) networks, the mobile devices can concurrently participate in cooperative outband device-to-device (D2D) data exchange by virtue of user- or network-related parameters (e.g., interest ...
    • Energy efficient techniques for 802.11n multiuser MAC WLANs 

      Gajic, Danica; Kartsakli, Elli; Zorba, Nizar; Liß, Christian; Alonso, Luis; ... more authors ( Institute of Electrical and Electronics Engineers Inc. , 2013 , Conference)
      In this paper we evaluate the energy efficiency of MIMO technologies introduced in the emerging IEEE 802.11n standard for infrastructure based WLANs. The main focus is on exploiting multiuser capabilities of MIMO technologies, ...
    • Energy optimization for bidirectional multimedia communication in unsynchronized TDD systems 

      Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)
      Energy efficiency is one of the main system resources that has to be optimally allocated, due to its impact on the amount of generated interference and the battery life for multimedia communication. In this paper, we ...
    • Energy optimization in multiuser quantized feedback systems 

      Althunibat, Saud; Zorba, Nizar; Granelli, Fabrizio; Verikoukis, Christos ( Springer Nature , 2013 , Article)
      This article explores the effects of quantization of feedback information on energy consumption in multiuser wireless communication systems. In order to optimize the energy consumption of the system, the article concentrates ...
    • Energy optimization in unsynchronized TDD systems for joint uplink downlink scheduling 

      Zorba, Nizar; Yaacoub, Elias; Verikoukis, Christos ( IEEE , 2013 , Conference)
      Energy is an important resource in wireless communications systems that has to be optimized in order to guarantee low interference in the network as well as efficient use of the available resources. One of the prominent ...
    • Green Cooperative Device-to-Device Communication: A Social-Aware Perspective 

      Datsika, Eftychia; Antonopoulos, Angelos; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article Review)
      As the mobile operators strive to accommodate the increasing load and capacity requirements, direct communication among users' devices, namely, device-to-device (D2D) communication, emerges as an advantageous solution for ...
    • Green handover with a hybrid satisfaction mechanism 

      Zorba, Nizar; Hassanein, Hossam S.; Verikoukis, Christos ( IEEE Computer Society , 2013 , Conference)
      Green communications have emerged as one of the most important trends in wireless communications because of its several advantages of interference reduction, battery life increase and electrical bill cut. Its application ...
    • Green operation techniques for large scale deployments of small cell LTE networks 

      Yaacoub, Elias; Zorba, Nizar; Sakarellos, Vasileios K.; Verikoukis, Christos} ( IEEE , 2013 , Conference)
      This paper investigates the large scale deployment of LTE small cell/femtocell networks. The interplay between the different small cell base stations (BSs) is studied in order to achieve the best user performance taking ...
    • IEEE Access Special section Editorial: Mobile edge computing and mobile cloud computing: Addressing heterogeneity and energy issues of compute and network resources 

      Khan, Muhammad Khurram; Shuja, Junaid; Jararweh, Yaser; Yu, Guanding; Guizani, Mohsen; ... more authors ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)
      Mobile applications are advancing toward higher network and compute requirements, which are similar to the requirements of server applications. Users prefer to perform their tasks on the go from mobile devices instead of ...
    • Joint uplink-downlink carrier aggregation scheme in LTE-A 

      Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference)
      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 ...
    • Matching game based virtualization in shared LTE-A networks 

      Datsika, Eftychia; Antonopoulos, Angelos; Zorba, Nizar; Verikoukis, Christos ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference)
      Wireless network virtualization enables efficient network sharing in Long Term Evolution Advanced (LTE-A) networks. For the accommodation of ever-increasing user demands, Mobile Virtual Network Operators (MVNOs) can lease ...
    • Opportunistic bi-directional scheduling under quality of experience demands 

      Zorba, Nizar; Yaacoub, Elias; El-Hajj, Ahmad M.; Dawy, Zaher; Verikoukis, Christos ( Association for Computing Machinery , 2013 , Conference)
      Quality of Experience (QoE) is a very important metric in wireless communication systems, where customers request strict QoE demands that translate into restrictions on both Uplink (UL) and Downlink (DL) connections. The ...
    • Power consumption in spatial cognition 

      Odeh, Maha; Zorba, Nizar; Verikoukis, Christos ( wiley , 2013 , Article)
      Multiple input multiple output adds a new dimension to be exploited in cognitive radio by simultaneously serving several users. The spatial domain that is added through multiple input multiple output is another system ...