Blar i SINTEF Open på forfatter "Håkegård, Jan Erik"
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Analysis of Spatial Decorrelation of Small-Scale Tropospheric Delay Using High-Resolution NWP Data
Håkegård, Jan Erik; Sokolova, Nadezda; Morrison, Aiden J (Peer reviewed; Journal article, 2023)This paper contains results from a study where numerical weather product (NWP) data provided by MET Norway were used to estimate the differential zenith tropospheric delay (dZTD) for an area including Scandinavia, Finland ... -
Communication for Air Traffic Management (ATM) in Northern Areas
Håkegård, Jan Erik; Bakken, Trond (Chapter, 2009)It is currently a significant ongoing effort worldwide to develop the future Air Traffic Management (ATM) system. As part of this work, a satellite communication system may ease the congestion problem for ATM services in ... -
Compatibility Study in the AeroMACS Frequency Band
Håkegård, Jan Erik (Chapter, 2011)This paper contains results from compatibility studies between AeroMACS and other systems operating in the same or adjacent frequency bands. These systems are RLAN, AMT, MLS and FSS feeder links. For compatibility with the ... -
COROID: A Crowdsourcing-based Companion Drones to Tackle Current and Future Pandemics
Rauniyar, Ashish; Hagos, Desta Haileselassie; Jha, Debesh; Håkegård, Jan Erik (Peer reviewed; Journal article, 2022)Due to the current COVID-19 virus, which has already been declared a pandemic by the World Health Organization (WHO), we are witnessing the greatest pandemic of the decade. Millions of people are being infected, resulting ... -
Differential ZTD estimation based on high spatial resolution NWP data for the Nordic countries
Håkegård, Jan Erik; Sokolova, Nadezda; Morrison, Aiden J (Chapter, 2022)This paper contains results from a study where Numerical Weather Product (NWP) data provided by MET Norway are used to estimate the differential zenith tropospheric delay (dZTD) for an area covering Scandinavia, Finland ... -
Dynamic Spectrum Management and Routing Solutions for Multi-Radio Mobile Ad Hoc Networks
Lie, Arne; Håkegård, Jan Erik; Ulversøy, Tore; Le Nir, Vincent; Sterner, Ulf; Hansson, Anders; Saarnisaari, Harri; Paso, Tuomas; Bräysy, Timo; Markkula, Juho; Löfsved, Elisabeth; Krygier, Jaroslaw (Peer reviewed; Journal article, 2023)The electromagnetic spectrum’s scarcity, the tactical edge’s dynamic nature, and the variety of tactical operations impose challenges to military cognitive radio networks. Multi-radio dynamic spectrum management (DSM) and ... -
Effects of Channel Estimation Errors in OFDM-MIMO-based Underwater Communications
Håkegård, Jan Erik; Grythe, Knut Harald (Chapter, 2009)State-of-the-art radio communication systems are in a large extent based on multi-carrier communication (OFDM) and multiple antennas (MIMO). In this paper the performance of such systems adapted to an underwater acoustic ... -
Ergodic Performance Analysis of Reconfigurable Intelligent Surface Enabled Bidirectional NOMA
Rauniyar, Ashish; Østerbø, Olav Norvald; Håkegård, Jan Erik (Chapter, 2023)This paper proposes and investigates a reconfigurable intelligent surface (RIS) enabled bidirectional non-orthogonal multiple access (NOMA) network termed as NOMA-RIS. Here, RIS allows multiple NOMA users in one group to ... -
Evaluation of Downlink IEEE802.16e Communication at Airports
Håkegård, Jan Erik; Myrvoll, Tor Andre (Chapter, 2008)Mobile WiMAX technology is proposed for ATS and AOC communications in airport areas. This technology provides a large amount of flexibility, incorporating optional use of advanced communication techniques and signal ... -
Exploiting Cooperative Downlink NOMA in D2D Communications
Rauniyar, Ashish; Østerbø, Olav; Håkegård, Jan Erik; Engelstad, Paal E. (Peer reviewed; Journal article, 2023)We propose and investigate a bidirectional device-to-device (D2D) transmission scheme that exploits cooperative downlink non-orthogonal multiple access (NOMA) (termed as BCD-NOMA). In BCD-NOMA, two source nodes communicate ... -
Federated Learning for Medical Applications: A Taxonomy, Current Trends, Challenges, and Future Research Directions
Rauniyar, Ashish; Hagos, Desta Haileselassie; Jha, Debesh; Håkegård, Jan Erik; Bagci, Ulas; Rawat, Danda B.; Vlassov, Vladimir (Peer reviewed; Journal article, 2023)With the advent of the Internet of Things (IoT), Artificial Intelligence (AI), Machine Learning (ML), and Deep Learning (DL) algorithms, the landscape of data-driven medical applications has emerged as a promising avenue ... -
LambdaRoad - Summarizing the main findings of work package 1: System and organizational requirements for CCAM"
Arnesen, Petter; Foss, Trond; Håkegård, Jan Erik; Hjelkrem, Odd Andre; Fagerholt, Randi Ann; Lie, Arne; Seter, Hanne (SINTEF rapport;2020:00884, Research report, 2020)This report isa collection of the memos written in work package 1 of the LambdaRoad project, where the overall project objectives is to study the need and requirements for electronic communication (ecom) in the future ... -
Measurement and modeling of the 5 GHz airport surface channel at Barajas Airport
Myrvoll, Tor Andre; Håkegård, Jan Erik (Chapter, 2011)AeroMACS is a system currently under development to be used for airport surface communications. It is based on the IEEE802.16-2009 standard, and is developed in cooperation with the WiMAX forum. The frequency band allocated ... -
NEMO: Internet of Things based Real-time Noise and Emissions MOnitoring System for Smart Cities
Rauniyar, Ashish; Berge, Truls Svenn; Håkegård, Jan Erik (Peer reviewed; Journal article, 2022)With the advent of ubiquitous sensors and Internet of Things (IoT) applications, research and development initiatives on smart cities are ramping up worldwide. It enables remote monitoring, management, and control of devices ... -
NEMO: Real-Time Noise and Exhaust Emissions Monitoring for Sustainable and Intelligent Transportation Systems
Rauniyar, Ashish; Berge, Truls Svenn; Kuijpers, Ard; Litzinger, Paul; Peeters, Bert; van Gils, Erik; Kirchhoff, Nikolas; Håkegård, Jan Erik (Peer reviewed; Journal article, 2023)Research and development efforts on sustainable and intelligent transportation systems are accelerating globally as the transportation sector contributes significantly to environmental pollution and produces a variety of ... -
Non-perfect channel estimation in OFDM-MIMO-based underwater communication
Grythe, Knut Harald; Håkegård, Jan Erik (Chapter, 2009)The main focus in this publication is on the mean square error of underwater acoustic channel estimators as function of the delay and Doppler spreads of the channel, and the effect this estimation error has on the bit error ... -
Results of a Ka Band Campaign for the Characterisation of Propagation Conditions for SatCom Systems at High Latitudes
Tjelta, Terje; Rytír, Martin; Bråten, Lars Erling; Grotthing, Per Arne; Cheffena, Michael; Håkegård, Jan Erik (Chapter, 2017)Satellite services in the High North are utilized extensively for both communication purposes and for earth and climate observations. This paper presents results of two year measurements at 20 GHz and co-sited meteorological ... -
SECOMAS. Final report from the project Spectral Efficient Communications for Aeronautical Services (SECOMAS) - Technical
Håkegård, Jan Erik; Myrvoll, Tor Andre; Holter, Bengt (Research report, 2011)SECOMAS was a research project running from January 2007 to December 2010 targeting spectral efficient communications for aeronautical services. The Research partners of the project were SINTEF and NTNU, and the project ... -
Secrecy Performance Analysis of Cooperative Nonorthogonal Multiple Access in IoT Networks
Rauniyar, Ashish; Østerbø, Olav Norvald; Håkegård, Jan Erik; Engelstad, Paal (Peer reviewed; Journal article, 2022)Different system models utilizing Non-orthogonal multiple access (NOMA) have been successfully studied to meet the growing capacity demands of the Internet of Things (IoT) devices for the next-generation networks. However, ... -
Statistical Modelling for Estimation of OD Matrices for Public Transport Using Wi-Fi and APC Data
Håkegård, Jan Erik; Myrvoll, Tor Andre; Skoglund, Tor Rune (Chapter, 2018)In this paper, statistical models are proposed to estimate trip level origin-destination (OD) matrices for public transport based on Wi-Fi data traffic. Wi-Fi monitoring equipment installed in 32 buses in Stavanger, Norway, ...