RCC Seminar Series

The IEEE Radio Communications Committee launches a series of online seminars from July 2021, which will give great opportunities to learn the recent outcomes on trending topics from outstanding researchers. The duration of each seminar is 35-40 minutes plus Q&A.

The IEEE RCC Special Interest Group on Terahertz Communications (RCC-SIG THz) also launched a series of online seminars focused on Terahertz Communications. For more information please visit the RCC-SIG THz website.

IEEE ComSoc RCC Seminar 1

Speaker: Prof. Mark F. Flanagan (University College Dublin)
Title: Optimization of the Achievable Rate for MIMO Systems Assisted by Reconfigurable Intelligent Surfaces
Abstract: Reconfigurable intelligent surfaces (RISs) represent a new technology that can shape the radio wave propagation in wireless networks and offers a variety of potential performance and implementation gains. In this talk, we will present some recent results on the optimization of the achievable rate for MIMO systems assisted by RISs. We will show that in this setting, optimization via the projected gradient method (PGM) can achieve the same achievable rate as alternating optimization (AO), but with a significantly lower computational complexity. We introduce a new metric which can serve as a first-order measure of the applicability of an RIS in a MIMO communication scenario. In addition, we demonstrate that the deployment of an RIS is particularly suitable to increase the achievable rate in indoor environments, as even a relatively small number of RIS elements can provide a substantial achievable rate gain. The talk will also cover the optimization of the achievable sum-rate for RIS-assisted multiuser MIMO communications, as well as rate optimization for the case of discrete signaling (finite-sized constellation) at the transmitter.
When: July 8, 2021, at 11am Eastern Time (4pm London time and 11pm CST)

Slides are available at this link.