On Spectral Efficiency for Multiuser MISO Systems under Imperfect Channel Information
We consider downlink transmission whereby a multiantenna base station simultaneously transmits data to multiple single-antenna users. We focus on slow flat fading […]
Digital Predistortion of Phased-Array Transmitter With Shared Feedback and Far-Field Calibration
Digital predistortion (DPD) of a phased array requires that multiple transmit paths must be measured by a feedback (FB) receiver (Rx). In […]
An Overview of Key Technologies in Physical Layer Security
The open nature of radio propagation enables ubiquitous wireless communication. This allows for seamless data transmission. However, unauthorized users may pose a […]
Digital predistortion of millimeter-wave phased array transmitter with over-the-air calibrated simplified conductive feedback architecture
Digital predistortion (DPD) of a phased array requires that multiple transmit paths must be measured by a feedback (FB) receiver (Rx), This […]
Learning-based trajectory optimization for 5G mmWave uplink UAVs
A Connectivity-constrained based path planning for unmanned aerial vehicles (UAVs) is proposed within the coverage area of a 5G NR Base Station […]
Positioning of Multiple Unmanned Aerial Vehicle Base Stations in Future Wireless Network
Unmanned aerial vehicle (UAV) base stations (BSs) are reliable and efficient alternative to full fill the coverage and capacity requirements when the […]
Direct Beamformer Estimation for Hybrid Architecture in mmWave Dynamic TDD System
The problem of weighted sum-rate maximization for hybrid architecture in millimeter wave communications with dynamic time division duplexing is considered. We propose […]
Adaptive Antenna Array with weight and antenna space control
A typical adaptive antenna array based on weight control (AAA-W) with M antennas can suppress M-1 interference signals. In this paper, we […]
Measurement Method for Characterizing Nonlinearity Under Near-Field and Far-Field Interferers in 5G mmW Phased Arrays
A single antenna output of a phased array receiver has only the directivity of the single element. The array gain is achieved […]
A Wideband IF Receiver Module for Flexibly Scalable mmWave Beamforming Combining and Interference Cancellation
Large-scale phased arrays need to combine weighted signals from multiple sub-arrays either in analog or in digital domain. Sub-arrays are preferably implemented […]