Novel Transceiver Design in Wideband Massive MIMO for Beam Squint Minimization

no code implementations • 11 Jul 2022 • Liza Afeef, Abuu B. Kihero, Hüseyin Arslan

When using ultra-wideband (UWB) signaling on massive multiple-input multiple-output (mMIMO) systems, the electromagnetic wave at each array element incurs an extra propagation delay comparable to (or larger than) the symbol duration, producing a shift in beam direction known as beam squint.

Joint Tracking of Multiple Beams in Beamspace MIMO Systems

no code implementations • 1 Nov 2020 • Liza Afeef, Murat Karabacak, Hüseyin Arslan

In millimeter-wave (mmWave) systems, beamforming is needed to overcome harsh channel environments.

Reconfigurable intelligent surface (RIS): Eigenvalue Decomposition-Based Separate Channel Estimation

no code implementations • 12 Oct 2020 • Salah Eddine Zegrar, Liza Afeef, Huseyin Arslan

Reconfigurable intelligent surface (RIS) has recently drawn significant attention in wireless communication technologies.

A General Framework for RIS-Aided mmWave Communication Networks: Channel Estimation and Mobile User Tracking

no code implementations • 2 Sep 2020 • Salah Eddine Zegrar, Liza Afeef, Huseyin Arslan

However, channel estimation in RIS-aided communication is still a major concern due to the passive nature of RIS elements, and estimation overhead that arises with multiple-input multiple-output (MIMO) system.