Results 181 to 190 of about 184,691 (254)

Robust Beamformer Design in Active RIS-Assisted Multiuser MIMO Cognitive Radio Networks

IEEE Transactions on Cognitive Communications and Networking, 2023
In this work, we address the problem of a joint robust transmission, reflection and reception strategy design at an active reconfigurable intelligent surface (RIS)-assisted underlay multiple input multiple output (MIMO) cognitive radio networks in which ...
Raviteja Allu   +4 more
semanticscholar   +1 more source

A Fully Packaged 135-GHz Multiuser MIMO Transmitter Array Tile for Wireless Communications

IEEE transactions on microwave theory and techniques, 2022
We report a packaging approach for building mm-wave massive multiple-input–multiple-output (MIMO) transmitter arrays in tiles. A single-channel 135-GHz transmitter, having a 22-nm fully-depleted (FD)-silicon on insulator (SOI) CMOS IC for baseband-RF ...
A. Farid   +3 more
semanticscholar   +1 more source

Joint Beamforming Design for IRS Aided Multiuser MIMO With Imperfect CSI

IEEE Transactions on Vehicular Technology, 2022
This paper investigates the joint beamforming design for the intelligent reflecting surface (IRS) aided multi-antenna multiuser (MU) multiple-input multiple-output (MIMO) downlink transmissions under imperfect channel state information (CSI), where the ...
Piao Zeng   +3 more
semanticscholar   +1 more source

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