Development of highly maintainable and reliable RF transceiver for satellite base stations

2021 ◽  
pp. 413-425
Keyword(s):  
Base Stations ◽  
Rf Transceiver

A 65nm CMOS 2×2 MIMO multi-band LTE RF transceiver for small cell base stations

2017 ◽  
Author(s):  
Kyoohyun Lim ◽  
Sanghoon Lee ◽  
Byeongmoo Moon ◽  
Hwahyeong Shin ◽  
Kisub Kang ◽  
...  
Keyword(s):  
Small Cell ◽  
Base Stations ◽  
Rf Transceiver ◽  
Cell Base ◽  
Multi Band

A 65-nm CMOS $2\times2$ MIMO Multi-Band LTE RF Transceiver for Small Cell Base Stations

2018 ◽  
Vol 53 (7) ◽  
pp. 1960-1976 ◽  
Author(s):  
Kyoohyun Lim ◽  
Sanghoon Lee ◽  
Yongha Lee ◽  
Byeongmoo Moon ◽  
Hwahyeong Shin ◽  
...  
Keyword(s):  
Small Cell ◽  
Base Stations ◽  
Rf Transceiver ◽  
Cell Base ◽  
Multi Band

Prevalence of nuclear cataract in Swiss veal calves and its possible association with mobile telephone antenna base stations

2009 ◽  
Vol 151 (10) ◽  
pp. 471-478 ◽  
Author(s):  
M. Hässig ◽  
F. Jud ◽  
H. Naegeli ◽  
J. Kupper ◽  
M. B. Spiess
Keyword(s):  
Mobile Telephone ◽  
Base Stations ◽  
Nuclear Cataract ◽  
Veal Calves

Developing GIS portal to ensure sanitary and epidemiological surveillance of transferring radio engineering objects

2020 ◽  
Vol 99 (4) ◽  
pp. 344-350
Author(s):  
Evgeny V. Zibarev ◽  
A. S. Afanasev ◽  
O. V. Slusareva ◽  
T. I. Muragimov ◽  
V. A. Stepanets ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Analytical Data ◽  
Base Stations ◽  
Epidemiological Surveillance ◽  
Graphical Form ◽  
Residential Areas ◽  
Information Portal ◽  
Radiofrequency Electromagnetic Fields ◽  
Online Mode ◽  
Automated Processes

In recent years, in the Russian Federation there has been an increase in the levels of radiofrequency electromagnetic fields in residential areas, including due to an increase in the number of base stations (BS). The purpose of sanitary and epidemiological surveillance at the stages of placement and commissioning of base stations (BS) is to prevent their adverse effects on public health. The increase in the number of base stations, together with the advent of new electronic equipment and antennas, provide opportunities for improving the processes of their accounting at the stage of placement and monitoring of the levels of radiofrequency electromagnetic fields at the operation stage. This automation tool can be a geo-information portal for providing sanitary and epidemiological surveillance of cellular base stations. The prototype of the geo-information portal allows both calculating the size of sanitary protection zones (SPZ) and building restriction zones (RZ) from the BS in online mode, displaying the results of calculations in graphical form and issuing sanitary and epidemiological conclusions for the placement and operation of base stations. The geo-information portal has the ability to synchronize with the data of the radio frequency center. Federal Service for Surveillance on Consumer Rights Protection and Human Wellbeing will be able to receive up-to-date analytical data. There will be completely automated processes of collecting, processing and storing information on BS.

Clustering for Interference Alignment with Cache-Enabled Base Stations under Limited Backhaul Links

2020 ◽  
Vol E103.B (7) ◽  
pp. 796-803
Author(s):  
Junyao RAN ◽  
Youhua FU ◽  
Hairong WANG ◽  
Chen LIU
Keyword(s):  
Interference Alignment ◽  
Base Stations ◽  
Backhaul Links

DEVELOPMENT OF VALUATION METHOD OF THE STATUS OF BASE STATIONS FOR DETERMINING THE NEED OF THEIR UPGRADING

2017 ◽  
pp. 60-70
Author(s):  
Natalya Ivanovna Shaposhnikova ◽  
Alexander Aleksandrovich Sorokin
Keyword(s):  
Decision Making ◽  
Fuzzy Sets ◽  
Cellular Network ◽  
New Technologies ◽  
Base Station ◽  
Base Stations ◽  
Valuation Method ◽  
The Status ◽  
Telecommunications Services ◽  
Theory Of Fuzzy Sets

The article consideres the problems of determining the need to modernize the base stations of the cellular network based on the mathematical apparatus of the theory of fuzzy sets. To improve the quality of telecommunications services the operators should send significant funding for upgrading the equipment of base stations. Modernization can improve and extend the functions of base stations to provide cellular communication, increase the reliability of the base station in operation and the functionality of its individual elements, and reduce the cost of maintenance and repair when working on a cellular network. The complexity in collecting information about the equipment condition is determined by a large number of factors that affect its operation, as well as the imperfection of obtaining and processing the information received. For a comprehensive assessment of the need for modernization, it is necessary to take into account a number of indicators. In the structure of indicators of the need for modernization, there were introduced the parameters reflecting both the degree of aging and obsolescence(the technical gap and the backlog in connection with the emergence of new technologies and standards). In the process of a problem solving, the basic stages of decision-making on modernization have been allocated. Decision-making on the need for modernization is based not only on measuring information that takes into account the decision-makers, but also on linguistic and verbal information. Therefore, to determine the need for upgrading the base stations, the theory of fuzzy sets is used, with the help of which experts can be attracted to this issue. They will be able to formulate additional fuzzy judgments that help to take into account not only measuring characteristics, but also poorly formalized fuzzy information. To do this, the main indicators of the modernization need have been defined, and fuzzy estimates of the need for modernization for all indicators and a set of indicators reflecting the need for upgrading the base stations have been formulated.

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