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Wyszukujesz frazę "user equipment" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Machine Learning-Based Small Cell Location Selection Process
Autorzy:
Wasilewska, Małgorzata
Kułacz, Łukasz
Powiązania:
https://bibliotekanauki.pl/articles/1839352.pdf
Data publikacji:
2021
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
base station selection
k-means clustering
spectral clustering
user equipment allocation
Opis:
In this paper, the authors present an algorithm for determining the location of wireless network small cells in a dense urban environment. This algorithm uses machine learning, such as k-means clustering and spectral clustering, as well as a very accurate propagation channel created using the ray tracing method. The authors compared two approaches to the small cell location selection process – one based on the assumption that end terminals may be arbitrarily assigned to stations, and the other assuming that the assignment is based on the received signal power. The mean bitrate values are derived for comparing different scenarios. The results show an improvement compared with the baseline results. This paper concludes that machine learning algorithms may be useful in terms of small cell location selection and also for allocating users to small cell base stations.
Źródło:
Journal of Telecommunications and Information Technology; 2021, 2; 120-126
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of a 4G/5G Base Station Using the srsRAN Software and the USRP Software Radio Module
Autorzy:
Flakowski, Wojciech
Krasicki, Maciej
Krenz, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/24200744.pdf
Data publikacji:
2023
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
base station
radio access network
radio channel power
radio link throughput
software-defined radio
user equipment
Opis:
This article presents the potential applications and scenarios for the implementation of a software-defined radio (SDR) module operating as a base station in 4G/5G networks. The paper presents test configurations of the srsRAN software environment in conjunction with various types of programmable radio modules. Then, the key performance metrics of the mobile telephony system and potential problems that may be encountered while implementing hardware and software layers are presented.
Źródło:
Journal of Telecommunications and Information Technology; 2023, 3; 30--40
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sources of error in satellite navigation positioning
Autorzy:
Januszewski, J.
Powiązania:
https://bibliotekanauki.pl/articles/116711.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
Global Navigation Satellite Systems (GNSS)
satellite navigation positioning
source of errors
satellite navigation
Dilution of Precision (DOP)
User Equivalent Range Error (UERE)
User Range Error (URE)
User Equipment Error (UEE)
Opis:
An uninterrupted information about the user’s position can be obtained generally from satellite navigation system (SNS). At the time of this writing (January 2017) currently two global SNSs, GPS and GLONASS, are fully operational, two next, also global, Galileo and BeiDou are under construction. In each SNS the accuracy of the user’s position is affected by the three main factors: accuracy of each satellite position, accuracy of pseudorange measurement and satellite geometry. The user’s position error is a function of both the pseudorange error called UERE (User Equivalent Range Error) and user/satellite geometry expressed by right Dilution Of Precision (DOP) coefficient. This error is decomposed into two types of errors: the signal in space ranging error called URE (User Range Error) and the user equipment error UEE. The detailed analyses of URE, UEE, UERE and DOP coefficients, and the changes of DOP coefficients in different days are presented in this paper.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 3; 419-423
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A critical analysis of IMO S-Mode Guidelines
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/117556.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
watchkeeping
S-Mode
International Maritime Organization (IMO)
critical analysis
user interface design
navigation equipment
radar equipment
ECDIS
Opis:
Circular on “Guidelines for the Standardization of User Interface Design for Navigation Equipment”, commonly known as “S-Mode Guidelines”, has lately been approved by International Maritime Organisation. Its potential impact on default and common user settings of radar equipment, electronic chart display & information system, and integrated navigation system has been discussed in the article. Several issues that should be considered during technical implementation of the circular provisions and follow-up familiarization of navigators with the affected equipment have been identified.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 841-846
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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