Browsing by Author "Ntontin, Konstantinos"

Now showing items 1-14 of 14

    • A low-complexity method for antenna selection in spatial modulation systems 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-11-13)
      Article
      Restricted access - publisher's policy
      In this Letter, a low-complexity Euclidean distancebased method for antenna subset selection in Spatial Modulation systems is presented. The proposed method avoids the high complexity of both the optimal exhaustive ...

    • Adaptive generalized space shift keying 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-02-21)
      Article
      Open Access
      In this article, we propose a closed-loop precoding method for the Generalized Space Shift Keying (GSSK) modulation scheme, suitable for Multiple-Input-Single-Output (MISO) systems and denoted as adaptive GSSK (AGSSK), ...

    • Adaptive generalized space shift keying (GSSK) modulation for MISO channels: a new method for high diversity and coding gains 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2012)
      Conference report
      Open Access
      Generalized Space Shift Keying (GSSK) modulation is a recently proposed low-complexity concept for Multiple-Input- Multiple-Output (MIMO) wireless systems. GSSK modulation is a generalized version of Space Shift Keying ...

    • Analog network coding in the multiple access relay channel: error rate analysis and optimal power allocation 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2015-06-01)
      Article
      Open Access
      In this paper, we consider Analog Network Coding (ANC) in the Multiple Access Relay Channel (MARC) with multiple relays, and provide the following three-fold contribution: 1) we introduce a tractable mathematical framework ...

    • Antenna subset selection for spatial modulation: a novel and energy efficient single RF technique 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, we propose a closed-loop and single RF multiple-input-multiple-output (MIMO) method, particularly suitable for the Uplink of cellular systems, which is based on the low-complexity and recently devised method ...

    • Autonomous reconfigurable intelligent surfaces through wireless energy harvesting 

      Ntontin, Konstantinos; Boulogeorgos, Alexandros Apostolos A.; Björnson, Emil; Selimis, Dimitrios; Martins, Wallace Alves; Abadal Cavallé, Sergi; Alexiou, Angeliki; Lazarakis, Fotis; Kisseleff, Steven; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Conference report
      Open Access
      In this paper, we examine the potential for a reconfigurable intelligent surface (RIS) to be powered by energy harvested from information signals. This feature might be key to reap the benefits of RIS technology's lower ...

    • Error rate analysis and optimal power allocation in multiple access relay channels with analog network coding 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, we examine multi-source multi-relay systems that employ Analog Network Coding for which we provide a two-fold contribution: i) We derive a closed-form upper bound of the average symbol error rate (SER) ...

    • Exploiting spatial modulation and analog network coding for the design of energy-efficient wireless networks 

      Ntontin, Konstantinos (Universitat Politècnica de Catalunya, 2015-11-03)
      Doctoral thesis
      Open Access
      As the data rate demands of the cellular users increase, together with their number, it is expected that unprecedented capacity demands should be met in wireless networks in the forthcoming years. However, the energy ...

    • Performance analysis of antenna subset selection in space shift keying systems 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, we provide a performance analysis of closed-loop antenna subset selection in Space Shift Keying (SSK) systems. In particular, we provide a closed-form formula for the Symbol Error Rate (SER) of such systems, ...

    • Performance analysis of multistream spatial modulation with maximum-likelihood detection 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013)
      Conference report
      Restricted access - publisher's policy
      In this paper, we provide a theoretical analysis of the optimal Maximum-Likelihood (ML) detector for the recently proposed multistream Spatial Modulation (SM) concept for multiple-input-multiple-output (MIMO) systems. ...

    • Time vs. unit cell splitting for autonomous reconfigurable intelligent surfaces 

      Ntontin, Konstantinos; Boulogeorgos, Alexandros Apostolos A.; Abdullah, Zaid; Mesodiakaki, Agapi; Abadal Cavallé, Sergi; Chatzinotas, Simeon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Conference report
      Open Access
      In this work, we propose a time- and a unit cell-splitting protocol for supplying the energy needs of reconfigurable intelligent surfaces (RISs) through wireless energy harvesting (EH) from information signals. We first ...

    • Time-and unit-cell splitting comparison for the autonomous operation of reconfigurable intelligent surfaces 

      Ntontin, Konstantinos; Björnson, Emil; Boulogeorgos, Alexandros Apostolos A.; Abdullah, Zaid; Mesodiakaki, Agapi; Abadal Cavallé, Sergi; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2023-09)
      Article
      Open Access
      In this work, we analytically compare the performance of the time-and unit cell-splitting protocols for satisfying the energy needs of reconfigurable intelligent surfaces (RISs) through wireless energy harvesting from ...

    • Towards the performance and energy efficiency comparison of spatial modulation with conventional single-antenna transmission over generalized fading channels 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2012)
      Conference report
      Restricted access - publisher's policy
      In this paper, we present a performance and energy efficiency comparison of the recently devised single RF Multiple- Input-Multiple-Output (MIMO) concept of Spatial Modulation (SM) with the conventional single-antenna ...

    • Wireless energy harvesting for autonomous reconfigurable intelligent surfaces 

      Ntontin, Konstantinos; Boulogeorgos, Alexandros Apostolos A.; Björnson, Emil; Martins, Wallace Alves; Kisseleff, Steven; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Papazafeiropoulos, Anastasios; Lazarakis, Fotis; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2023-03)
      Article
      Open Access
      In the current contribution, we examine the feasibility of fully-energy-autonomous operation of reconfigurable intelligent surfaces (RIS) through wireless energy harvesting (EH) from incident information signals. Towards ...