Creating and sharing knowledge for telecommunications

Iniciação à Eletrónica e Telecomunicações (IET)


on 25-06-2018

... Date: 25-29 June
Location: Instituto de Telecomunicações, DEM, Faculdade de Engenharia, Universidade da Beira Interior

This traineeship aims to adress the basic concepts of electronics and mobile and wireless telecommunications, and corresponds to 25 hours (3 in the morning and 2 in the afternoon).
It will allow trainees to get acquainted with some of the innovative applications of electronics and communication networks, by immersing them in the research and development context of IT and conducting experiments. It will include theoretical sessions, lab work with assembly of electronics kits, basic techniques for producing printed circuit boards, experimental realization of received power measurements, binary output and other relevant measures in 4G and 5G mobile systems. They will have contact with the assembly of simple point-to-point / pointmultipoint connections and experimental performance verification, as well as with the main research and tech-nological challenges for the development of mobile and wireless communications in the 21st century (
(for example, small terrestrial cells and based on aerial drones, spectrum sharing, spatial processing and MIMO).
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IEEE SEMINAR Cognitive Radio for Wireless Communications: Concepts and Application


on 08-06-2018

... To meet rapidly growing traffic demands and accommodate large number of devices, more radio spectrum is needed for future wireless communications. Considering the scarcity of radio spectrum, it is needed to enhance the utilization of radio spectrum licensed exclusively to specific users. In cognitive radio, an unlicensed user, called a secondary user, is permitted to access the spectrum allocated to a licensed user, called a primary user. When the primary and secondary users transmit their signals simultaneously, interference occurs at both users which degrades their performance. Interference at the primary user can be avoided by spectrum sensing technique which prohibits a secondary user from transmitting its signal when it detects a primary user’s signal. Also, interference level at the primary user can be limited below a certain threshold by spectrum sharing technique in which the secondary user adjusts its transmit power accordingly. Some recent results on cognitive radio are introduced, and its applications and future research subjects are shown.

Date: 8th June at 11:00 am.
Local: Lecture Hall A4, Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Coimbra.
GPS coordinates (Latitude: 40°11'10.38"N, Longitude: 8°24'59.13"W).
Speaker:
Jae Hong Lee
Professor, Department of Electrical and Computer Engineering
Seoul National University
Seoul, Korea
(Distinguished Speaker of the IEEE Vehicular Technology Society)

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