Search Results for author: Ioannis Krikidis

Found 27 papers, 0 papers with code

A Hybrid Noise Approach to Modelling of Free-Space Satellite Quantum Communication Channel for Continuous-Variable QKD

no code implementations20 Oct 2024 Mouli Chakraborty, Anshu Mukherjee, Ioannis Krikidis, Avishek Nag, Subhash Chandra

Unlike existing models that approximate the noise in quantum channels as merely Gaussian distributed, our model incorporates a hybrid noise analysis, accounting for both quantum Poissonian noise and classical Additive-White-Gaussian Noise (AWGN).

Hybrid Semantic-Shannon Communications

no code implementations2 Oct 2024 Nikos G. Evgenidis, Nikos A. Mitsiou, Sotiris A. Tegos, Panagiotis D. Diamantoulakis, Panagiotis Sarigiannidis, Ioannis Krikidis, George K. Karagiannidis

Semantic communications are considered a promising beyond-Shannon/bit paradigm to reduce network traffic and increase reliability, thus making wireless networks more energy efficient, robust, and sustainable.

Hybrid Quantum Noise Approximation and Pattern Analysis on Parameterized Component Distributions

no code implementations7 Sep 2024 Mouli Chakraborty, Anshu Mukherjee, Ioannis Krikidis, Avishek Nag, Subhash Chandra

A hybrid quantum noise model incorporating both quantum Poisson noise and classical additive white Gaussian noise (AWGN) can be interpreted as an infinite mixture of Gaussians with weightage from the Poisson distribution.

An RIS-enabled Time Reversal Scheme for Multipath Near-Field Channels

no code implementations26 Aug 2024 Andreas Nicolaides, Constantinos Psomas, Ioannis Krikidis

Time reversal (TR) is a promising technique that exploits multipaths for achieving energy focusing in high-frequency wideband communications.

DCSK-based Waveform Design for Self-sustainable RIS-aided Noncoherent SWIPT

no code implementations23 Aug 2024 Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis

The elements of the first sub-surface perform energy harvesting (EH), which in turn, provide the required power to the other sub-surface operating in the information transfer (IT) mode.

MIMO with 1-bit Pre/Post-Coding Resolution: A Quantum Annealing Approach

no code implementations7 Jun 2024 Ioannis Krikidis

Experimental results in a state-of-the-art D-WAVE QA device validate the efficiency of the proposed algorithm.

An Unsupervised Machine Learning to Optimize Hybrid Quantum Noise Clusters for Gaussian Quantum Channel

no code implementations13 Apr 2024 Mouli Chakraborty, Anshu Mukherjee, Ioannis Krikidis, Avishek Nag, Subhash Chandra

This work focuses on optimizing the hybrid quantum noise model to improve the capacity of Gaussian quantum channels using Machine Learning (ML) generated clusters.

Capacity Estimation

Transmit and Receive Antenna Port Selection for Channel Capacity Maximization in Fluid-MIMO Systems

no code implementations9 Apr 2024 Christos N. Efrem, Ioannis Krikidis

In this letter, we study a discrete optimization problem, namely, the maximization of channel capacity in fluid multiple-input multiple-output (fluid-MIMO) systems through the selection of antenna ports/positions at both the transmitter and the receiver.

Integrated SWIPT Receiver with Memory Effects: Circuit Analysis and Information Detection

no code implementations11 Mar 2024 Eleni Demarchou, Zulqarnain Bin Ashraf, Dieff Vital, Besma Smida, Constantinos Psomas, Ioannis Krikidis

Then, the half-wave rectifier is used as an integrated simultaneous wireless information and power transfer receiver where the circuit's output is used for decoding information based on amplitude modulation.

Superimposed Chirp Waveforms for SWIPT with Diplexer-based Integrated Receivers

no code implementations8 Nov 2023 Arijit Roy, Constantinos Psomas, Ioannis Krikidis

This enables us to perform subband selection when operating over set of orthogonal subbands.

Continuous Fluid Antenna Systems: Modeling and Analysis

no code implementations2 Nov 2023 Constantinos Psomas, Peter J. Smith, Himal A. Suraweera, Ioannis Krikidis

In this paper, we focus on a continuous FA system (CFAS) and present a general framework for its design and analytical evaluation.

Robust IRS-Element Activation for Energy Efficiency Optimization in IRS-Assisted Communication Systems With Imperfect CSI

no code implementations15 Sep 2023 Christos N. Efrem, Ioannis Krikidis

In the case of continuous phase shifts, we design a dynamic programming (DP) algorithm that is theoretically guaranteed to achieve the global maximum with polynomial complexity $O(L\,{\log L})$, where $L$ is the number of IRS elements.

Global Optimization of Energy Efficiency in IRS-Aided Communication Systems via Robust IRS-Element Activation

no code implementations29 Oct 2022 Christos N. Efrem, Ioannis Krikidis

In this paper, we study an intelligent reflecting surface (IRS) assisted communication system with single-antenna transmitter and receiver, under imperfect channel state information (CSI).

On the Diversity and Coded Modulation Design of Fluid Antenna Systems

no code implementations4 May 2022 Constantinos Psomas, Ghassan M. Kraidy, Kai-Kit Wong, Ioannis Krikidis

From a transceiver's standpoint, this can be materialized through the implementation of fluid antennas (FAs).

Diversity Scheduling

Differential Chaos Shift Keying-based Wireless Power Transfer over a Frequency Selective Channel

no code implementations9 Mar 2022 Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis

This paper studies the performance of a differential chaos shift keying (DCSK)-based wireless power transfer (WPT) setup in a frequency selective scenario.

Probabilistically Robust Optimization of IRS-aided SWIPT Under Coordinated Spectrum Underlay

no code implementations31 Jan 2022 Konstantinos Ntougias, Ioannis Krikidis

This study considers the Joint Transmit/Reflect Beamforming and Power Splitting (JTRBPS) optimization problem in a spectrum underlay setting, such that the transmit sum-energy of the intelligent reflecting surface (IRS)-aided secondary transmitter (ST) is minimized subject to the quality-of-service requirements of the PS-simultaneous wireless information and power transfer (SWIPT) secondary receivers and the interference constraints of the primary receivers (PR).

Robust Design

RC Filter Design for Wireless Power Transfer: A Fourier Series Approach

no code implementations31 Jan 2022 Constantinos Psomas, Ioannis Krikidis

Our analytical framework provides a complete characterization of the RC filter's impact on the WPT performance.

Wireless Information and Power Transfer: A Bottom-Up Multi-Layer Design Framework

no code implementations28 Jan 2022 Ioannis Krikidis, Constantinos Psomas

The efficiency of wireless information and power transfer (WIPT) systems requires an essential reevaluation and rethinking of the entire transceiver chain, which is characterized by a bottom-up multi-layer design approach.

An Evolutionary Game for Mobile User Access Mode Selection in sub-$6$ GHz/mmWave Cellular Networks

no code implementations10 Jan 2022 Christodoulos Skouroumounis, Ioannis Krikidis

Particularly, by using SG tools, we first propose an analytical framework to assess the performance of the considered networks in terms of average signal-to-interference-plus-noise (SINR) ratio, average rate, and mobility-induced time overhead, for scenarios with user mobility{.}

On the Design of Magnetic Resonant Coupling for Wireless Power Transfer in Multi-Coil Networks

no code implementations6 Dec 2021 Eleni Demarchou, Constantinos Psomas, Ioannis Krikidis

Wireless power transfer (WPT) is a promising technology for powering up distributed devices in machine type networks.

Design and Analysis of SWIPT with Safety Constraints

no code implementations20 Nov 2021 Constantinos Psomas, Minglei You, Kai Liang, Gan Zheng, Ioannis Krikidis

In this paper, we provide a complete framework for the design and analysis of far-field SWIPT under safety constraints.

Rate Splitting with Wireless Edge Caching: A System-Level-based Co-design

no code implementations24 Oct 2021 Eleni Demarchou, Constantinos Psomas, Ioannis Krikidis

Rate splitting (RS) and wireless edge caching are essential means for meeting the quality of service requirements of future wireless networks.

Multi-dimensional Lorenz-Based Chaotic Waveforms for Wireless Power Transfer

no code implementations4 Oct 2021 Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis

In this paper, we investigate multi-dimensional chaotic signals with respect to wireless power transfer (WPT).

Differential Chaos Shift Keying-based Wireless Power Transfer with Nonlinearities

no code implementations28 May 2021 Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis

Based on this observation, we propose a novel DCSK-based signal design, which further enhances the WPT capability of the proposed architecture; corresponding analytical expressions for the harvested DC are also derived.

Simultaneous Wireless Information and Power Transfer for Federated Learning

no code implementations26 Apr 2021 José Mairton B. da Silva Jr., Konstantinos Ntougias, Ioannis Krikidis, Gábor Fodor, Carlo Fischione

We investigate the trade-off between the number of communication rounds and communication round time while harvesting energy to compensate the energy expenditure.

Federated Learning

Differential chaos shift keying-based wireless power transfer

no code implementations25 Mar 2021 Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis

In this work, we investigate differential chaos shift keying (DCSK), a communication-based waveform, in the context of wireless power transfer (WPT).

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