Georgios Angelopoulos, Angelos Chatzimparmpas, Anestis Dalgkitsis and Georgios Theodoros Kalampokis are the last-course students from the Department of Engineering Informatics and Τelecommunications of the University of Western Macedonia (Greece) who visited the CTTC thanks to the Erasmus+ programme, the EU programme for education, training, youth and sport. During their two months stay (June-July’17) at CTTC [...]

In the context of this PhD thesis defense, Luis Blanco presents his work realized at CTTC. This dissertation deals with different subset selection problems in wireless communications systems. These type of problems have a combinatorial nature, which makes them computationally intractable for medium and large-scale sizes. In particular, two different types of problems are addressed [...]

In the context of this PhD thesis defense, Miguel Calvo-Fullana presents his work realized at CTTC. Long thought to be an unattainable ambition, self-sustainable and green-powered wireless networks are rapidly becoming a reality. This is driven by recent hardware improvements in what is known as Energy Harvesting (EH). This technology makes it possible for devices [...]

Vladimir Trukhaev, a high-school student from the St. Paul’s School (Barcelona), visited CTTC after being awarded a Richi Talent Scholarship. During his one-week stay at CTTC, Vladimir was introduced to the field of machine learning by Javier Matamoros and David Gregoratti, two of our researchers in the Communications Systems Division. The term machine learning comprises [...]

ABSTRACT: The potential of Free/Libre Open Source Software (FLOSS) as a way to increase competitiviness has been emphasized by many studies as well as public policies and funding programs. While many research and innovation projects and organizations adopt FLOSS in order to foster the dissemination of their results, the translation to marketable products and services remains [...]

In the context of this PhD thesis defense, Pol Henarejos presents his work realized at CTTC. Radiocommunication systems have evolved significantly in recent years in order to meet present and future demands. Historically, time, frequency and more recently, spatial dimensions have been used to improve capacity and robustness. Paradoxically, radiocommunications that leverage the polarization dimension [...]

ABSTRACT: A new two-dimensional modulation technique called Orthogonal Time Frequency Space (OTFS) modulation designed in the delay-Doppler domain is introduced as a waveform ideally suited to new 5G use cases. Through this design, which exploits full diversity over time and frequency, OTFS coupled with equalization converts the fading, time-varying wireless channel experienced by modulated signals [...]

The high school students Carles Bosch and Ariel Piqué were awarded a Richi Talent Scholarship to visit the CTTC during summer During this short-term visit, the students received guidance to work on their own research projects in the area Visible Light Communications (VLC). The instruction was provided by Alexis Dowhuszko and Pol Henarejos, two resarchers of the [...]