611 citations · 1.6k across the 35 of their papers we have counts for
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Optimal Multiuser Transmit Beamforming: A Difficult Problem with a Simple Solution Structure
Emil Björnson, Mats Bengtsson, Björn Ottersten
Transmit beamforming is a versatile technique for signal transmission from an array of antennas to one or multiple users [1]. In wireless communications, the goal is to increas…
Estimation for the Linear Model with Uncertain Covariance Matrices
Dave Zachariah, Nafiseh Shariati, Mats Bengtsson +2
We derive a maximum a posteriori estimator for the linear observation model, where the signal and noise covariance matrices are both uncertain. The uncertainties are treated probab…
Low-Complexity Polynomial Channel Estimation in Large-Scale MIMO with Arbitrary Statistics
Nafiseh Shariati, Emil Björnson, Mats Bengtsson +1
This paper considers pilot-based channel estimation in large-scale multiple-input multiple-output (MIMO) communication systems, also known as massive MIMO, where there are hundreds…