Results 51 to 60 of about 164 (124)

Digital Predistortion for MIMO Transmitters Using Multi-Channel Error Feedback Adaptation

IEEE Access, 2020
Digital predistortion (DPD) is known as an efficient solution to suppress nonlinear distortion of power amplifiers (PAs) in wireless transmitters to achieve both high linearity and power efficiency.
Ying Liu, Libin Zhang, Xiangjie Xia, Xin Quan, Shihai Shao, Youxi Tang   +5 more
doaj   +1 more source

Heuristic Model Structure Optimization for Digital Predistortion

IEEE Access, 2021
Power amplifiers (PAs) are widely used in RF broadcasting applications. However, they exhibit nonlinear behavior and deteriorate the quality of transmitted signals.
Wen Qiao, Hongmin Li, Chengye Jiang, Guichen Yang, Lei Su, Falin Liu   +5 more
doaj   +1 more source

TCN-DPD: Parameter-Efficient Temporal Convolutional Networks for Wideband Digital Predistortion

2025 IEEE/MTT-S International Microwave Symposium - IMS 2025
Digital predistortion (DPD) is essential for mitigating nonlinearity in RF power amplifiers, particularly for wideband applications. This paper presents TCN-DPD, a parameter-efficient architecture based on temporal convolutional networks, integrating noncausal dilated convolutions with optimized activation functions.
Duan, Huanqiang, Versluis, Manno, Chen, Qinyu, de Vreede, Leo C. N., Gao, Chang   +4 more
openaire   +2 more sources

Coordinate transformation based coefficients estimation algorithm for digital predistortion of RF power amplifiers

Tongxin xuebao, 2015
Based on the low-IF digital predistortion (DPD) architecture,a coordinate transformation based low-complex coefficients estimation algorithm is proposed to reduce the hardware implementation cost and numerical calculation complexity significantly.The ...
GHao HUAN, Hua QIAN, Sai-jie YAO, Xiu-mei YANG   +3 more
doaj   +2 more sources

Broadband GaN Doherty Power Amplifier With Integrated Unequal Wilkinson and λ/4 Phase Network for Midband 5G

International Journal of RF and Microwave Computer-Aided Engineering, Volume 2026, Issue 1, 2026.
This paper presents the design and implementation of a high‐efficiency two‐way Doherty power amplifier (DPA) for sub‐6 GHz 5G New Radio (NR) applications, specifically targeting the n78 band (3.3–3.8 GHz). The proposed gallium nitride (GaN)‐based DPA delivers a peak output power of 42.5 dBm, a gain of 13.3 dB, and a maximum power‐added efficiency (PAE)
Tugba Haykir Ergin, Ismail Sisman, Palandoken Merih   +2 more
wiley   +1 more source

Digital Predistorter Implementation for Wideband Power Amplifiers in New Generation Wireless Systems Based on a Low‐Complexity Volterra Series Model

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields, Volume 38, Issue 5, September/October 2025.
ABSTRACT In this article, we provide a novel, expanded, and adapted pruning approach for the Simplified Volterra Series (SVS) model that makes it applicable to a wider range of Power Amplifiers (PAs). The proposed Modified SVS (MSVS) model is then applied in a Digital Predistortion (DPD) architecture to linearize a 25 W Gallium Nitride (GaN) RF PA.
Haithem Rezgui, Ghalid Abib, Fatma Rouissi, Adel Ghazel   +3 more
wiley   +1 more source

A System Approach for Efficiency Enhancement and Linearization Technique of Dual-Input Doherty Power Amplifier

IEEE Journal of Microwaves, 2023
In this paper, we propose an efficient system approach to improve the power efficiency of dual-input Doherty power amplifier (DIDPA) with maintaining its linearity level. An auto-tuning process based on a hybrid heuristic search control (HHSC) is applied
Chouaib Kantana, Mouchacine Benosman, Rui Ma, Yuji Komatsuzaki   +3 more
doaj   +1 more source

Performance Analysis of MIMO Links With Non‐Isolated Active Antenna Arrays

Microwave and Optical Technology Letters, Volume 67, Issue 8, August 2025.
ABSTRACT In this paper, we analyze the performance of non‐isolated active arrays in a multiple‐input multiple‐output (MIMO) system. When ferromagnetic‐type isolators are removed in the transmitter (Tx) chains, the antenna mutual coupling will dynamically change the load impedance seen by the power amplifiers (PAs) at their outputs, which subsequently ...
Jiayu Hou, Haijun Fan, Yuan Ding, George Goussetis   +3 more
wiley   +1 more source

Binary Search‐Based Division (BSBD): A Technique for Efficient Division in Hardware

Journal of Electrical and Computer Engineering, Volume 2025, Issue 1, 2025.
The division techniques play a key role in several computer‐implemented algorithms and applications; regrettably, they impose significant implementation constraints that hinder parallelization. The proposed binary search‐based division (BSBD) technique is inherited from the variable latency dividers, which have the potential to adjust the quotient bit ...
Mustafa Muhammed Hendawi, Nahla Elazab Elashker, Mervat Mohamed Adel Mahmoud, Shaimaa ElSayed Ibrahim, Eman Mohamed Mahmoud, Arpan Hazra   +5 more
wiley   +1 more source

Green HSR Reliable Communication With LTE-R Using MIMO-DPD

IEEE Access, 2021
Reliable and efficient High-speed Railways (HSR) is the key component to the concept of Green Smart Cities to combat the prevailing traffic congestion on roads and increasing greenhouse gases in the atmosphere.
Anurag Vijay Agrawal, Meenakshi Rawat
doaj   +1 more source