94 citations · 148 across the 14 of their papers we have counts for
5 papers · 1 filter
On Broad-Beam Reflection for Dual-Polarized RIS-Assisted MIMO Systems
Parisa Ramezani, Maksym A. Girnyk, Emil Björnson
The use of a reconfigurable intelligent surface (RIS) for aiding user-specific transmission has been widely explored. However, little attention has been devoted to utilizing RIS fo…
Broad Beam Reflection for RIS-Assisted MIMO Systems with Planar Arrays
Parisa Ramezani, Maksym A. Girnyk, Emil Björnson
While reconfigurable intelligent surface (RIS)-aided user-specific beamforming has been vastly investigated, the aspect of utilizing RISs for assisting cell-specific transmission h…
Dual-Polarized Reconfigurable Intelligent Surface Assisted Broad Beamforming
Parisa Ramezani, Maksym A. Girnyk, Emil Björnson
A reconfigurable intelligent surface (RIS) consists of a large number of low-cost elements that can control the propagation environment seen from a transmitter by intelligently app…
Efficient Cell-Specific Beamforming for Large Antenna Arrays
Maksym A. Girnyk, Sven O. Petersson
We propose an efficient method for designing broad beams with spatially flat array factor and efficient power utilization for cell-specific coverage in communication systems equipp…
Energy-Efficient Design of Broad Beams for Massive MIMO Systems
Sven O. Petersson, Maksym A. Girnyk
Massive MIMO is a promising air interface technique for 5G wireless communications. Such antennas offers capabilities to utilize channel correlations to create beams suitable for u…