Browsing by Author "Krikidis, Ioannis"

Now showing items 1-20 of 28

    • Conference Object  

      Ambient RF Energy Harvesting with Non-Linearities in Large-Scale Networks 

      Psomas, Constantinos; Krikidis, Ioannis (2019)
      Ambient radio-frequency (RF) energy harvesting is a potential solution for charging low-powered devices, as a result of its cost effectiveness and pervasiveness. In this paper, we deal with devices which are underlaid in ...
    • Article  

      Asynchronous Ad Hoc Networks With Wireless Powered Cognitive Communications 

      Demarchou, Eleni; Psomas, Constantinos; Krikidis, Ioannis (2019)
      Over the recent years, the proliferation of smart devices and their applications has led to a rapid evolution of the concept of the Internet of Things (IoT), advancing large scale machine type networks which are characterized ...
    • Article  

      Average Age of Information in Wireless Powered Sensor Networks 

      Krikidis, Ioannis (2019)
      In this letter, we deal with the age of information (AoI) for a sensor network with wireless power transfer (WPT) capabilities. Specifically, we study a simple network topology, where a sensor node harvests energy from ...
    • Article  

      Delay- and Diversity-Aware Buffer-Aided Relay Selection Policies in Cooperative Networks 

      Nomikos, Nikolaos; Poulimeneas, Dimitrios; Charalambous, Themistoklis; Krikidis, Ioannis; Vouyioukas, Demosthenes; Johansson, Mikael (2018)
      Buffer-Aided (BA) relaying has shown tremendous performance improvements in terms of throughput and outage probability, although it has been criticized of suffering from long delays that are restrictive for applications, ...
    • Conference Object  

      Distributed Estimation in Wireless Powered mmWave Networks with Random Beamforming 

      Psomas, Constantinos; Krikidis, Ioannis (2018)
      This paper studies wireless power transfer for distributed estimation in the context of millimeter-wave (mmWave) communication networks. Specifically, a mmWave wireless powered communication network is considered, where ...
    • Article  

      Energy Beamforming in Wireless Powered mmWave Sensor Networks 

      Psomas, Constantinos; Krikidis, Ioannis (2019)
      This paper studies the beneficial combination of wireless power transfer and millimeter-wave (mmWave) communications in wireless sensor networks. In particular, an mmWave wireless powered sensor network is considered, where ...
    • Conference Object  

      Energy Efficiency for MEC Offloading with NOMA through Coalitional Games 

      Eliodorou, Michalis; Psomas, Constantinos; Krikidis, Ioannis; Socratous, Socratis (2019)
      In this paper, we investigate the user association problem for mobile edge computation (MEC) offloading in non-orthogonal multiple access (NOMA) networks. According to NOMA, multiple users can access the MEC server to ...
    • Conference Object  

      Energy Efficient Base Station Transmit Power Adaptation for Green 5G Massive MIMO Systems 

      Khodamoradi, Vahid; Sali, A.; Salah, Asem A.; Ali, B. M.; Abdullah, R. S. A. Raja; Krikidis, Ioannis (2019)
      Characterising the fundamental energy efficiency (EE) limits of massive Multiple-Input-Multiple-Output (MIMO) systems is significant for the development of green wireless communications. This paper analyses the adaptation ...
    • Conference Object  

      Finite Blocklength Analysis of the Multiple Access Relay Channel with Batch-and-Forward Strategy 

      Kourtellaris, Christos K.; Psomas, Constantinos; Krikidis, Ioannis (2019)
      This work provides a comprehensive framework regarding the analysis of the Multiple Access Relay Channel (MARC) with Time Division Multiple Access (TDMA) scheduling, subject to finite blocklength constraints. In particular, ...
    • Article  

      Flex-NOMA: Exploiting Buffer-Aided Relay Selection for Massive Connectivity in the 5G Uplink 

      Nomikos, Nikolaos; Michailidis, Emmanouel T.; Trakadas, Panagiotis; Vouyioukas, Demosthenes; Zahariadis, Theodore; Krikidis, Ioannis (2019)
      The success of fifth generation (5G) mobile network and its long-term evolution (LTE) relies on enabling demanding services with massive connectivity requirements, including Internet of Things (IoT) nodes, mobile devices, ...
    • Conference Object  

      Full-Duplex Radio in mmWave Cellular Networks with Cell Center/Edge Users 

      Skouroumounis, Christodoulos; Psomas, Constantinos; Krikidis, Ioannis (2018)
      In this paper, we assess the effect of full-duplex (FD) communications in the context of millimeter-wave (mmWave) cellular networks. The FD radio can potentially double the spectral efficiency but its performance is ...
    • Book Chapter  

      Harnessing Interference in SWIPT Systems 

      Timotheou, Stelios; Zheng, Gan; Masouros, Christos; Krikidis, Ioannis (John Wiley & Sons, Ltd, 2018)
      This chapter introduces the adaptation of the conventional simultaneous wireless information and power transfer (SWIPT) beamforming to the case of symbol-level precoding in order to harness interference for both information ...
    • Article  

      Heterogeneous FD-mm-Wave Cellular Networks With Cell Center/Edge Users 

      Skouroumounis, Christodoulos; Psomas, Constantinos; Krikidis, Ioannis (2019)
      In this paper, we assess the effect of full-duplex (FD) radio in the context of millimeter-wave (mm-Wave) communications. Particularly, we propose an analytical framework, based on stochastic geometry, to evaluate the ...
    • Conference Object  

      An Integrated SWIPT Receiver Using Non-Coherent Detection Schemes 

      Goudeli, Eleni; Psomas, Constantinos; Krikidis, Ioannis (2018)
      In this paper, we investigate non-coherent detection schemes, for the integrated simultaneous wireless information and power transfer (SWIPT) receiver. Firstly, we study a symbol by symbol (SBS) detection, while optimization ...
    • Article  

      Mobility Management in Ultra-Dense Networks: Handover Skipping Techniques 

      Demarchou, Eleni; Psomas, Constantinos; Krikidis, Ioannis (2018)
      Ultra-dense network deployment is a key technology for potentially achieving the capacity target of next-generation wireless communication systems. However, such a deployment results in cell proliferation and cell size ...
    • Conference Object  

      On the Design and Deployment of Multitier Heterogeneous and Adaptive Vehicular Networks 

      Ansari, Shuja; Boutaleb, Tuleen; Sinanovic, Sinan; Gamio, Carlos; Krikidis, Ioannis (2018)
      Research on connected and autonomous vehicles (CAVs) is moving towards first deployments around the world. For complete vehicle autonomy, on top of sensors there is a need for an effective communication system. Due to the ...
    • Article  

      Retrodirective Large Antenna Energy Beamforming in Backscatter Multi-User Networks 

      Krikidis, Ioannis (2018)
      In this letter, we study a new technique for energy beamforming (EB) in multi-user networks, which combines large antenna retrodirectivity at the transmitter side with signal backscattering at the energy receivers. The ...
    • Article  

      Robust Beamforming and User Clustering for Guaranteed Fairness in Downlink NOMA With Partial Feedback 

      Al-Wani, Mohanad M.; Sali, Aduwati; Noordin, Nor K.; Hashim, Shaiful J.; Leow, Chee Yen; Krikidis, Ioannis (2019)
      In this paper, a downlink multiuser non-orthogonal multiple access (NOMA) with full and partial channel state information (CSI) feedback is considered. We investigate beam design and user clustering from the throughput-fairness ...
    • Article  

      SAI: Safety Application Identifier Algorithm at MAC Layer for Vehicular Safety Message Dissemination Over LTE VANET Networks 

      Ansari, Shuja; Sánchez, Marvin; Boutaleb, Tuleen; Sinanovic, Sinan; Gamio, Carlos; Krikidis, Ioannis (2018)
      Vehicular safety applications have much significance in preventing road accidents and fatalities. Among others, cellular networks have been under investigation for the procurement of these applications subject to stringent ...
    • Conference Object  

      Short Packet Communications in Large-Scale Wireless Powered Networks 

      Psomas, Constantinos; Kourtellaris, Christos K.; Krikidis, Ioannis (2019)
      Wireless power transfer and short packet communications are two technologies ideal for next-generation low-power wireless networks such as the Internet of Things. In this paper, we consider the employment of wireless powered ...