Robust beamformer design in active RIS-assisted multiuser MIMO cognitive radio networks

R Allu, O Taghizadeh, SK Singh… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
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 …

Robust beamforming design for intelligent reflecting surface aided cognitive radio systems with imperfect cascaded CSI

L Zhang, C Pan, Y Wang, H Ren… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, intelligent reflecting surface (IRS) is introduced to enhance the network
performance of cognitive radio (CR) systems. Specifically, we investigate robust …

Robust downlink beamforming in multiuser MISO cognitive radio networks with imperfect channel-state information

EA Gharavol, YC Liang… - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
This paper studies the problem of robust downlink beamforming design in a multiuser
multiple-input-single-output (MISO) cognitive radio network (CR-Net) in which multiple …

Robust cognitive beamforming with bounded channel uncertainties

G Zheng, KK Wong, B Ottersten - IEEE Transactions on Signal …, 2009 - ieeexplore.ieee.org
This paper studies the robust beamforming design for a multi-antenna cognitive radio (CR)
network, which transmits to multiple secondary users (SUs) and coexists with a primary …

Joint beamforming, power, and channel allocation in multiuser and multichannel underlay MISO cognitive radio networks

S Dadallage, C Yi, J Cai - IEEE Transactions on Vehicular …, 2015 - ieeexplore.ieee.org
In this paper, we consider joint beamforming, power, and channel allocation in a multiuser
and multichannel underlay multiple-input-single-output (MISO) cognitive radio network …

Robust energy-efficient MIMO transmission for cognitive vehicular networks

D Tian, J Zhou, Z Sheng… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
This work investigates a robust energy-efficient solution for multiple-input–multiple-output
(MIMO) transmissions in cognitive vehicular networks. Our goal is to design an optimal …

Distributed optimal beamformers for cognitive radios robust to channel uncertainties

Y Zhang, E DallAnese… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
Through spatial multiplexing and diversity, multi-input multi-output (MIMO) cognitive radio
(CR) networks can markedly increase transmission rates and reliability, while controlling the …

Joint transmit precoding and reflect beamforming design for IRS-assisted MIMO cognitive radio systems

W Jiang, Y Zhang, J Zhao, Z Xiong… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
In this paper, we consider an intelligent reflecting surface (IRS)-assisted downlink cognitive
radio (CR) system, in which a secondary access point (SAP) communicates with multiple …

Rate maximization and beamforming design for relay-aided multiuser cognitive networks

T Luan, F Gao, XD Zhang, JCF Li… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
This paper studies the rate maximization problem and designs the beamforming strategy for
relay-aided multiuser multiantenna cognitive radio (CR) network that coexists with a primary …

Robust beamforming in cognitive radio

G Zheng, S Ma, KK Wong, TS Ng - IEEE Transactions on …, 2010 - ieeexplore.ieee.org
This letter considers the multi-antenna cognitive radio (CR) network, which has a single
secondary user (SU) and coexists with a primary network of multiple users. Our objective is …