45 citations · 63 across the 4 of their papers we have counts for
7 papers · 1 filter
NOMA-based Improper Signaling for MIMO STAR-RIS-assisted Broadcast Channels with Hardware Impairments
Mohammad Soleymani, Ignacio Santamaria, Eduard Jorswieck
This paper proposes schemes to improve the spectral efficiency of a multiple-input multiple-output (MIMO) broadcast channel (BC) with I/Q imbalance (IQI) at transceivers by employi…
SNR Maximization in Beyond Diagonal RIS-assisted Single and Multiple Antenna Links
Ignacio Santamaria, Mohammad Soleymani, Eduard Jorswieck +1
Reconfigurable intelligent surface (RIS) architectures not limited to diagonal phase shift matrices have recently been considered to increase their flexibility in shaping the wirel…
Optimization of Rate-Splitting Multiple Access in Beyond Diagonal RIS-assisted URLLC Systems
Mohammad Soleymani, Ignacio Santamaria, Eduard Jorswieck +1
This paper proposes a general optimization framework for rate splitting multiple access (RSMA) in beyond diagonal (BD) reconfigurable intelligent surface (RIS) assisted ultra-relia…
Energy-efficient Rate Splitting for MIMO STAR-RIS-assisted Broadcast Channels with I/Q Imbalance
Mohammad Soleymani, Ignacio Santamaria, Eduard Jorswieck
This paper proposes an energy-efficient scheme for multicell multiple-input, multiple-output (MIMO) simultaneous transmit and reflect (STAR) reconfigurable intelligent surfaces (RI…
Interference Leakage Minimization in RIS-assisted MIMO Interference Channels
Ignacio Santamaria, Mohammad Soleymani, Eduard Jorswieck +1
We address the problem of interference leakage (IL) minimization in the -user multiple-input multiple-output (MIMO) interference channel (IC) assisted by a reconfigurable intell…
Constellations on the Sphere with Efficient Encoding-Decoding for Noncoherent Communications
Javier Álvarez-Vizoso, Carlos Beltrán, Ignacio Santamaria +2
In this paper, we propose a new structured Grassmannian constellation for noncoherent communications over single-input multiple-output (SIMO) Rayleigh block-fading channels. The co…