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Wyszukujesz frazę "Base station" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Assessment of Area Energy Efficiency of LTE Macro Base Stations in Different Environments
Autorzy:
Shahab, S. N.
Abdulkafi, A. A.
Zainun, A. R.
Powiązania:
https://bibliotekanauki.pl/articles/308271.pdf
Data publikacji:
2015
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Area Energy Efficiency
LTE
Macro Base Station
Opis:
Energy efficiency (EE) of wireless telecommunications has become a new challenge for the research community, governments and industries in order to reduce CO2 emission and operational costs. EE of base stations (BSs) in cellular networks is a growing concern for cellular operators to not only maintain profitability, but also to reduce the overall negative impact to the environment and economic issues for wireless network operators. In this paper, a framework focuses on the Area Energy Efficiency (AEE) evaluation of LTE BSs is presented. The parameters affect on the AEE and the coverage area of LTE BS in different scenarios are investigated. AEE analysis has been done using a few key performance indicators including transmit power, bandwidth, load factor with the assumption of different scenarios (urban, suburban and rural). The simulation results show that the LTE BSs have better AEE in an urban environment for cell radius less than 750 m compare with the suburban and rural environments. Furthermore, it is obvious that there is a strong influence of traffic load, BW and transmission power on AEE of LTE network. On the other hand, AEE increases significantly as the BW size increases. Finally, it has been shown that the AEE of LTE macro BS decreases with increasing the percentage of traffic load for all scenarios.
Źródło:
Journal of Telecommunications and Information Technology; 2015, 1; 59-66
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of near field of the GSM base station antennas in urban environment
Autorzy:
Wójcik, D.
Powiązania:
https://bibliotekanauki.pl/articles/309235.pdf
Data publikacji:
2003
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
dozymetria
GSM
RF dosimetries
human exposure
radio base station
ray tracing
Opis:
A simple and efficient method for evaluation of near field of the GSM base station antennas in urban environment is presented in this paper. The method is based on the replacement of panel antenna with a discrete linear array. Moreover, the geometrical optics approach is used to consider the influence of environment. The approximate results are found to be in excellent agreement with the results obtained by using the method of moments (MoM). Presented method can be successfully used for fast evaluation of exposure to electromagnetic fields emitted by the GSM base station antennas in urban environment.
Źródło:
Journal of Telecommunications and Information Technology; 2003, 1; 41-44
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
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
    Wyświetlanie 1-4 z 4

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