Results 41 to 50 of about 35,890,141 (157)
OFDM-based beam-oriented digital predistortion for massive MIMO
, 2021 Linearization of massive MIMO arrays is a significant computational challenge that typically scales with the number of antennas. In this work, we introduce a beam-oriented digital predistortion (DPD) scheme for OFDM-based massive MIMO systems that ...
Alexios Balatsoukas-Stimming +8 more
core +1 more source
A Schottky diode and FET‐paralleled analogue predistorter for 5G small‐cell base stations
Electronics Letters, Volume 57, Issue 6, Page 235-237, March 2021., 2021 Abstract This letter presents an analogue predistorter (APD) named Schottky diode (SD) and field effect transistor (FET)‐paralleled APD (SDFP‐APD) for the fifth‐generation (5G) mobile system, which is composed of an FET paralleled with two SDs. The simulation results show that the SDFP‐APD has the best compression compensation for the radio frequency ...
Li Huang +3 more
wiley +1 more source
IEEE Access, 2019 The method of function approximation to improve index accuracy of the lookup table (LUT) of digital predistortion (DPD) is proposed in this paper. The algorithm utilizes Taylor Series method for LUT approximation.
Jijun Ren
doaj +1 more source
Digital predistortion of RF amplifiers using baseband injection for mobile broadband communications [PDF]
, 2014 Radio frequency (RF) power amplifiers (PAs) represent the most challenging design parts of wireless transmitters. In order to be more energy efficient, PAs should operate in nonlinear region where they produce distortion that significantly degrades the ...
Cabarkapa, M.
core +1 more source
Digital Predistortion Utilizing Over-the-Air Feedback for Phased Arrays
IEEE Access, 2021 In this paper, an efficient digital predistortion (DPD) architecture utilizing over-the-air (OTA) feedback is presented to linearize phased array transmitters.
Ying Liu +5 more
doaj +1 more source
Digital predistortion of wideband radar waveforms [PDF]
, 2021 As demands for increased radio frequency system performance have grown over time, sufficiently mitigating the distortion introduced by high power amplifiers has proven to be a major challenge to overcome.
Summers, Randall
core
Applied Sciences, 2021 This paper presents an experimental realization of multiband 5G new radio (NR) optical front haul (OFH) based radio over fiber (RoF) system using digital predistortion (DPD).
Muhammad Usman Hadi +4 more
doaj +1 more source
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 +5 more
doaj +1 more source
Practically Feasible Closed-Loop Digital Predistortion for VCSEL-MMF-Based Radio-over-Fiber Links [PDF]
Radioengineering, 2020 The article demonstrates a novel Digital Predistortion (DPD) architecture for Mobile Front Haul links for the advanced Long-Term Evolution (LTE) and upcoming 5G networks.
M. U. Hadi +5 more
doaj
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 +5 more
doaj +1 more source