Wszystkie pola: cellular systems - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Modelling of CDMA systems
Autorzy:: Gajewski, P.
Krygier, J.
Powiązania:: https://bibliotekanauki.pl/articles/308360.pdf
Data publikacji:: 2001
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: OPNET
DS-CDMA
cellular systems
network simulation
Opis:: This paper describes a model of a system with wideband CDMA that is a proposal of user access for future UMTS. This model has been implemented using OPNET tool. The model enables network architecture, radio interface, mobile station motion, call generation, signalling, etc. The examples of simulation results of call and handover blocking probability are also presented in this paper.
Źródło:: Journal of Telecommunications and Information Technology; 2001, 2; 35-40
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Radio Channels Modeling for Adaptive Antennas Applications – Analysis of Elevation, Azimuth and Delay Spread
Autorzy:: Łapszow, R.
Modelski, J.
Powiązania:: https://bibliotekanauki.pl/articles/307848.pdf
Data publikacji:: 2014
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: adaptive antenna
cellular systems
radio channel modeling
Opis:: Research of modeling urban environment channel has been presented in this paper. Measurements were performed for 2.2 GHz band. Test environment was based on existing 3G sites. Elevation, delay and azimuth spreads were analyzed. Both theoretical channel modeling and similar tests campaign were subject for analysis in this paper. Based on radio channel modeling further investigations are presented and the adaptive antenna implementation was proposed.
Źródło:: Journal of Telecommunications and Information Technology; 2014, 2; 35-41
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Link Quality Assessment Algorithm for Heterogeneous Self-organizing Maritime Communications Network
Autorzy:: Bronk, K.
Lipka, A.
Niski, R.
Powiązania:: https://bibliotekanauki.pl/articles/307958.pdf
Data publikacji:: 2018
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: 3G
cellular systems
link quality indicator
LTE
maritime radiocommunications
Opis:: The article introduces a method of performing a radio link quality assessment based on the Link Quality Indicator (LQI) which will be calculated for every system that is available. The method presented has been developed during the netBaltic project completed in Poland and generally applies to the so-called maritime zone A, i.e. the sea area where ships are still within the range of shore-based radio communication systems, particularly 3G/LTE cellular networks. The algorithm was developed based on the results of measurements obtained during two separate campaigns. That measurement data served as a basis for the method’s initial assumptions and was utilized during the method’s veriﬁcation.
Źródło:: Journal of Telecommunications and Information Technology; 2018, 2; 32-40
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Evolutionary paths in wireless communication systems
Autorzy:: Michalski, W.
Powiązania:: https://bibliotekanauki.pl/articles/309042.pdf
Data publikacji:: 2005
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: cellular mobile radio systems
wireless local area networks
wireless personal networks
wide area wireless packet data systems
satellite-based mobile systems
paging/messaging systems
cordless telephones
access points
switches
GPRS
Mobile IP
WLAN cellular integration
Opis:: The paper contains a review and analysis of evolutionary paths of seven most important, from network development strategy point of view, wireless communication systems, especially the WLAN operating according to the IEEE 802.11 standard. With respect to WLAN, trends related to evolution toward mobile network and self organizing network as well as toward integration of WLAN and GSM using GPRS are presented. Concerning WLAN architecture development, evolution paths toward distributed controlled network as well as centrally coordinated and controlled network are described. Moreover, analysis includes cellular mobile radio systems, wireless personal networks, wide area wireless packet data systems, satellite-based mobile systems, paging/messaging systems and cordless telephones. With respect to these systems, general evolution process and trends associated with this process are described.
Źródło:: Journal of Telecommunications and Information Technology; 2005, 3; 105-111
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Mobile telecommunication systems changed the electronic communications and ICT market
Autorzy:: Zieliński, A.
Zieliński, K.
Powiązania:: https://bibliotekanauki.pl/articles/308308.pdf
Data publikacji:: 2013
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: GSM cellular network
market penetration
market prospects
mobile communication
services
Opis:: The paper covers development and importance of mobile (cellular) telecommunication services, which developed during last about 20 years and are currently the most important and profitable telecommunication sector. The development of mobile telecommunications becomes essential factor of economic growth in many countries, especially in developing countries. Currently due to the scientific and technological progress as well as the implementation a new standard known as LTE system, cellular telecommunication becomes the basic element of the modern broadband telecommunication infrastructure and internet services. Growing importance of the mobile systems is also connected with great popularity of new mobile terminals – smartphones and tablets. These terminals together with the technology known as cloud computing changed also the ICT market. The paper relates to the situation in many countries, but mainly to Poland.
Źródło:: Journal of Telecommunications and Information Technology; 2013, 2; 5-13
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: C-V2X Communications for the Support of a Green Light Optimized Speed Advisory (GLOSA) Use Case
Autorzy:: Chochliouros, Ioannis P.
Spiliopoulou, Anastasia S.
Kostopoulos, Alexandros
Agapiou, George
Lazaridis, Pavlos
Zaharis, Zaharias
Chen, Tao
Dardamanis, Athanassios
Kourtis, Michail-Alexandros
Agapiou, Marinos
Herzog, Uwe
Ladid, Latif
Powiązania:: https://bibliotekanauki.pl/articles/1839465.pdf
Data publikacji:: 2021
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: 5G
cellular V2X
cooperative awareness messages
cooperative intersection
cooperative ITS
green light-optimized speed advisory
intelligent transportation systems
traffic efficiency
vehicle-to-everything
Opis:: Rapid expansion of 5G affects a number of sectors, including vehicular communications relying on cooperative intelligent transportation systems (C-ITS). More specifically, in the context of the Internet of Vehicles (IoV), a particular emphasis is placed on modern cellular V2X (C-V2X) technologies aiming to further improve road safety. This work originates from the detailed scope of the ongoing 5G-DRIVE research project promoting cooperation between the EU and China, with the aim of demonstrating IoV services that rely on vehicle-to-infrastructure (V2I) communications. With the C-V2X approach serving as a point of departure, we analyze and describe a specific green light-optimized speed advisory (GLOSA) use case, for which we provide a detailed descriptive framework, a proposed architectural framework for trials, as well as specific KPIs for the joint assessment of trials between the EU and China. We also discuss the context for performance test procedures to be conducted as part of the intended trials. GLOSA provides end-users with short-term information on upcoming traffic light status to optimize traffic flows, help prevent speed limit violations, improve fuel efficiency, and reduce pollution.
Źródło:: Journal of Telecommunications and Information Technology; 2021, 2; 93-106
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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