Πλοήγηση ανά Θέμα "Signal to noise ratio"
Αποτελέσματα 1-20 από 20
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An assessment of a unmanned aerial vehicle-based broadcast scenario assuming random terrestrial user locations
(2021)With the advent of the new decade, unmanned aerial vehicles (UAVs) will increasingly play an active role mainly as broadband transmission relays for broadcast applications. In the present study, we consider a feasible ... -
An Automated Method for Quality Control in MRI Systems: Methods and Considerations
(2020)Objective: The purpose of this study was to develop an automated method for performing quality control (QC) tests in magnetic resonance imaging (MRI) systems, investigate the effect of different definitions of QC parameters ... -
Cross-layer optimized authentication and error control for wireless 3D medical video streaming over LTE
(2017)3D video for tele-medicine applications is gradually gaining momentum since the 3D technology can provide precise location information. However, the weak link for 3D video streaming is the necessary wireless link of the ... -
DeepTSS: multi-branch convolutional neural network for transcription start site identification from CAGE data
(2022)Background: The widespread usage of Cap Analysis of Gene Expression (CAGE) has led to numerous breakthroughs in understanding the transcription mechanisms. Recent evidence in the literature, however, suggests that CAGE ... -
An Efficient Localization and Avoidance Method of Jammers in Vehicular Ad Hoc Networks
(2022)Jamming is a terrifying attack that could harm 802.11p-based vehicular communications by occupying the communication channels by overwhelming the network with jamming packets, especially for self-driving cars, as it is ... -
Federated-Learning-Driven Radio Access Networks
(2022)In this work, we present federated learning (FL) driven radio access mechanisms, which can be employed at the future radio access networks (RANs) to achieve high accuracy rather than data rate that was the objective in ... -
Information content in nuclear medicine imaging
(2019)The aim of the present study was to investigate the information content of positron emission tomography (PET) images. We used the GATE Monte Carlo package (GEANT4 application for tomographic emission) and reconstructed ... -
Interference decoding in cellular wireless relay networks with space-time coding
(2014)In this paper we propose a cooperative protocol and a symbol decoding algorithm that target improved performance in the presence of inter-cell interference (ICI) in wireless cellular networks. Our scheme uses the wireless ... -
Interference decoding in cellular wireless relay networks with space-time coding
(2016)In this paper we propose a cooperative protocol and a symbol decoding algorithm that target improved performance in the presence of inter-cell interference (ICI) in wireless cellular networks. Our scheme uses the wireless ... -
Investigating 5G V2X QoS using turbo codes
(2021)3rd Generation Partnership Project (3GPP) 5th Generation (5G) Vehicle-to-Everything (V2X) implementation scenarios represent typical applications of the new forthcoming technology. Quality of service (QoS) in 5G V2X services ... -
Lossy transmission of correlated sources in a multiple access quasi-static fading channel
(2016)In this paper, we investigate low-complexity, receiver-driven strategies for the transmission of two correlated sources in a multiple access quasi-static fading channel. We consider two different transmission modes at the ... -
Measurement and modeling of microbial growth using timelapse video
(2020)The development of timelapse videos for the investigation of growing microbial colonies has gained increasing interest due to its low cost and complexity implementation. In the present study, a simple experimental setup ... -
Mixed THz/FSO Relaying Systems: Statistical Analysis and Performance Evaluation
(2022)In this paper, the performance of a mixed Terahertz/free-space optical (THz/FSO) wireless transmission system is studied, where the joint effects of channel fading and pointing errors are considered for both THz and FSO ... -
Multi-Metric Waveform Optimization for Multiple-Input Single-Output Joint Communication and Radar Sensing
(2022)Joint communication and radar sensing (JCAS) integrates the two functions into one system, sharing one transmitted signal. In this paper, we investigate JCAS waveform optimization in communication-centric systems, where a ... -
New Antenna Selection Schemes for Full-Duplex Cooperative MIMO-NOMA Systems
(2022)In this paper, we address the antenna selection (AS) problem in full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) systems, where a multi-antenna FD relay bridges the connection between the multi-antenna ... -
Performance of an Underwater Optical Wireless Link with a Randomly Placed or Moving Receiver
(2021)The current work investigates the outage probability of a vertical diffused line-of-sight underwater optical wireless communication link where a fixed transmitter at the sea surface communicates with a receiver floated ... -
Proton magnetic resonance spectroscopy at 3T - Evaluation of metabolic profile of human brain lesions
(2009)Brain MR imaging at 3T has been increasingly used in clinical practice since a great deal of effort has been invested in research into high magnetic fields to overcome the difficulties of successively working with stronger ... -
Room-localized spoken command recognition in multi-room, multi-microphone environments
(2017)The paper focuses on the design of a practical system pipeline for always-listening, far-field spoken command recognition in everyday smart indoor environments that consist of multiple rooms equipped with sparsely distributed ... -
SSIM-based error-resilient cross-layer optimization for wireless video streaming
(2016)The traditional Sum of Squared Error (SSE)-based cross-layer optimization has been shown to be an effective way to improve the quality of service for wireless video streaming. However, recent research works show that the ... -
A Sub-Sampling Approach for Data Acquisition in Gamma Ray Emission Tomography
(2016)State of the art data acquisition systems for small animal imaging gamma ray detectors often rely on free running Analog to Digital Converters (ADCs) and high density Field Programmable Gate Arrays (FPGA) devices for digital ...