A 39-GHz CMOS bidirectional Doherty phased-array beamformer using shared-LUT DPD with inter-element mismatch compensation technique for 5G base station

Z Li, J Pang, Y Zhang, Y Yamazaki… - IEEE Journal of Solid …, 2023 - ieeexplore.ieee.org
This article demonstrates a 39-GHz CMOS phased-array beamformer aiming for power-
efficient and area-efficient fifth-generation (5G) dual-polarized multiple-in–multiple-out (DP …

Efficient neural network DPD architecture for hybrid beamforming mMIMO

T Muškatirović-Zekić, N Nešković, D Budimir - Electronics, 2023 - mdpi.com
This paper presents several different Neural Network based DPD architectures for hybrid
beamforming (HBF) mMIMO applications. They are formulated, tested and compared based …

Novel algorithm to synthesize the tapering profile for enhanced linearization of RF beamforming arrays over a wide steering range

AB Ayed, P Mitran, S Boumaiza - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
This article proposes an algorithm to synthesize a tapering profile that reduces the extent of
the variation of the active reflection coefficients seen by the power amplifiers (PAs) in a radio …

Offline and Time-variant EVD-based Closed-loop Digital Predistortion Design for Sub-THz Power Amplifier Array in Basedband Transmitter

CL Tu, CM Chang, SJ Jou - 2023 IEEE International …, 2023 - ieeexplore.ieee.org
In this paper, we propose an eigenvalue decomposition (EVD) based digital predistortion
(DPD) design for nonlinear memory PAs in active antenna array structure with offline and …

Multibeam Digital Predistorter with Intercarrier Interference Suppression for Millimeter-Wave Array Antenna Transmitters

T Ota, AN Lozhkin, K Tamanoi, H Ishikawa… - IEICE Transactions …, 2023 - search.ieice.org
This paper proposes a multibeam digital predistorter (DPD) that suppresses intercarrier
interference caused by nonlinear distortions of power amplifiers (PAs) while reducing the …

A Computationally Efficient Predistortion and Segment Thresholding for Distributed PA Arrays

R Mushini, J Dooley - 2023 21st IEEE Interregional NEWCAS …, 2023 - ieeexplore.ieee.org
Multipath MIMO systems have emerged, providing faster and more reliable wireless
communications. These systems require distributed arrays of nonlinear power amplifiers …

On the Viability of Using a Subset of Transmitter-Observation Receivers for Training a Common DPD in Fully Digital MIMO Transmitters

JG Lim, H Barkhordar-Pour, AB Ayed… - IEEE Microwave and …, 2023 - ieeexplore.ieee.org
This letter lays the foundation for reducing the required number of transmitter-observation
receivers (TORs) for training digital predistortion (DPD) in fully digital massive multiple-input …

Modeli digitalne predistorzije za hibridne masivne višeantenske predajnike sa formiranjem snopa primenom neuralnih mreža

T Muškatirović-Zekić - Универзитет у Београду, 2023 - nardus.mpn.gov.rs
Intenzivan i brz razvoj bežičnih sistema nove generacije usko je povezan sa razvojem i
primenom Multiple-Input Multiple-Output (MIMO) tehnika koje omogućavaju povećanje …

System and method for adaptive filtering

H Gao, H Cao, S Liu - US Patent 11,817,921, 2023 - Google Patents
A method in an adaptive filter system is provided. The method comprises obtaining
parameters for a plurality of branches of the adaptive filter system. The method further …