An introduction to satellite communications will be provided, along with the identification of trends in the area. Additionally, speakers will present their knowledge and experience in developing a satellite downlink transmitter. The system is compatible with the Cubesat standard and was designed to offer high-performance transmission on a C-band channel. In the first part, the system assumptions will be specified. Next, the main components to be placed on a customized PCB will be described. Subsequently, the HDL code development process for the main on-board device (Zynq SoC) will be presented, which is used for digital signal processing and has a moderately sized FPGA section. In this part, timing failures and limitations of fixed-point representation will be presented. The last part of the conference will be dedicated to some theoretical aspects of digital transmission. The fundamentals of bit-coded modulation (BICM), which has become standard in many wireless systems and can be an ambitious solution for satellite communication, will be presented. An iterative decoder and other improvements to BICM will be presented, which can greatly reduce the bit error rate without any increase in signal power.
speakers
speakers
Mario Marques da Silva
University Professor and Director of the Department of Engineering and Computer Science, as well as researcher at the Telecommunications Institute, in Lisbon, Portugal. He completed his degree in 1992 and his Master's and PhD in Electrical and Computer Engineering, respectively in 1999 and 2005, both from the Instituto Superior Técnico of the University of Lisbon.
Maciej Krasicki
Maciej Krasicki received his Ph.D. and other academic degrees in telecommunications from Poznan University of Technology (PUT), Poland, in 2010 and 2015, respectively. He is currently an associate professor at the Institute of Wireless Communications, PUT. His research interests focus on coding and modulation for radio communications. He is also an expert in programming System-on-Chip (SoC) transceivers. In recent years he has been involved in three research projects with the aim of increasing data throughput in wireless local networks and in two R&D projects related to unmanned aerial vehicle communication. He is currently involved in two projects dedicated to communication with nanosatellites.