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6 papers · 2 filters
Intelligent Reflecting Surface-Assisted Cognitive Radio System
Jie Yuan, Ying-Chang Liang, Jingon Joung +2
Cognitive radio (CR) is an effective solution to improve the spectral efficiency (SE) of wireless communications by allowing the secondary users (SUs) to share spectrum with primar…
Isolation and Localization of Unknown Faults Using Neural Network-Based Residuals
Daniel Jung
Localization of unknown faults in industrial systems is a difficult task for data-driven diagnosis methods. The classification performance of many machine learning methods relies o…
Optimal Least-Squares Estimator and Precoder for Energy Beamforming over IQ-Impaired Channels
Deepak Mishra, Håkan Johansson
Usage of low-cost hardware in large antenna arrays and low-power wireless devices in Internet-of-Things (IoT) has led to the degradation of practical beamforming gains due to the u…
Weighted Sum-Rate Optimization for Intelligent Reflecting Surface Enhanced Wireless Networks
Huayan Guo, Ying-Chang Liang, Jie Chen +1
Intelligent reflecting surface (IRS) is a promising solution to build a programmable wireless environment for future communication systems. In practice, an IRS consists of massive…
Zero-Velocity Detection - A Bayesian Approach to Adaptive Thresholding
Johan Wahlström, Isaac Skog, Fredrik Gustafsson +2
A Bayesian zero-velocity detector for foot-mounted inertial navigation systems is presented. The detector extends existing zero-velocity detectors based on the likelihood-ratio tes…
Massive MIMO is a Reality -- What is Next? Five Promising Research Directions for Antenna Arrays
Emil Björnson, Luca Sanguinetti, Henk Wymeersch +2
Massive MIMO (multiple-input multiple-output) is no longer a "wild" or "promising" concept for future cellular networks - in 2018 it became a reality. Base stations (BSs) with 64 f…