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cs.IT2023
Heterogeneous Rank Beamforming for Industrial Communications
Andrea Bedin, Akshay Jain, Andrea Zanella +1
This paper proposes a novel hardware beamforming architecture, which is capable of utilizing a different number of Radio Frequency (RF) chains in different parts of the bandwidth.…
cs.IT2019
On the Spectral Efficiency for Massive MIMO Systems With Imperfect Spacial Covariance Information
A. K. Kocharlakota, K. Upadhya, S. A. Vorobyov
This paper studies the impact of imperfect channel covariance information on the uplink (UL) and downlink (DL) spectral efficiencies (SEs) of a time-division duplexed (TDD) massive…
cs.IT2018
Covariance Matrix Estimation for Massive MIMO
Karthik Upadhya, Sergiy A. Vorobyov
We propose a novel pilot structure for covariance matrix estimation in massive multiple-input multiple-output (MIMO) systems in which each user transmits two pilot sequences, with…