The effect of stimulus intensity on neural envelope tracking
Sign Up to like & getrecommendations! Published in 2021 at "Hearing Research"
DOI: 10.1016/j.heares.2021.108175
Abstract: Objectives In recent years, there has been significant interest in recovering the temporal envelope of a speech signal from the neural response to investigate neural speech processing. The research focus is now broadening from neural… read more here.
Keywords: neural envelope; speech; envelope; stimulus intensity ... See more keywords
A numerical assessment of an effective envelope-tracking semiconductor optical amplifier design for coherent-optical OFDM transmission
Sign Up to like & getrecommendations! Published in 2020 at "Optics Communications"
DOI: 10.1016/j.optcom.2019.124474
Abstract: Abstract The inherent nonlinear effects associated to Semiconductor Optical Amplifiers (SOAs) may translate into a transmission performance loss for non-constant envelope modulation formats. However, a variety of linearization schemes may be adopted for coping with… read more here.
Keywords: envelope; semiconductor optical; envelope tracking; ofdm ... See more keywords
Delta-band neural envelope tracking predicts speech intelligibility in noise in preschoolers
Sign Up to like & getrecommendations! Published in 2023 at "Hearing Research"
DOI: 10.1101/2023.02.22.529509
Abstract: Behavioral tests are currently the gold standard in measuring speech intelligibility. However, these tests can be difficult to administer in young children due to factors such as motivation, linguistic knowledge and cognitive skills. It has… read more here.
Keywords: envelope tracking; neural envelope; intelligibility; delta band ... See more keywords
An Envelope Tracking Supply Modulator Utilizing a GaN-Based Integrated Four-Phase Switching Converter and Average Power Tracking-Based Switch Sizing With 85.7% Efficiency for 5G NR Power Amplifier
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2021.3079403
Abstract: This article proposes a supply modulator (SM) that uses high switching frequency gallium-nitride (GaN) devices to achieve a four-phase fast step-down converter for the fast-tracking ability of the envelope tracking (ET). The ET signal is… read more here.
Keywords: envelope tracking; four phase; supply; power ... See more keywords
Envelope Tracking Supply Modulator with Trellis-Search-Based Switching and 160-MHz Capability
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2021.3128394
Abstract: The hybrid amplifier that combines a buck converter and a linear amplifier has been widely used as the envelope tracking (ET) supply modulator for ET power amplifier (PA) application. Instead of adding more large off-chip… read more here.
Keywords: tracking supply; envelope tracking; trellis search; 160 mhz ... See more keywords
Analysis of Systematic Losses in Hybrid Envelope Tracking Modulators
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Circuits and Systems I: Regular Papers"
DOI: 10.1109/tcsi.2018.2883531
Abstract: This paper presents a comprehensive analysis of the intrinsic losses in hybrid envelope tracking power supply modulators used in envelope tracking power amplifier systems. The losses are computed entirely symbolically in terms of system parameters… read more here.
Keywords: tracking modulators; envelope tracking; analysis systematic; hybrid envelope ... See more keywords
Design Techniques for High-Efficiency Envelope-Tracking Supply Modulator for 5th Generation Communication
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3165820
Abstract: This brief provides a brief tutorial on designing a high efficiency envelope-tracking supply modulator with recent techniques. Design challenges for 5G communication applications are given. Detailed techniques covering topology derivation, multi-level and fast-speed switching converter… read more here.
Keywords: envelope tracking; high efficiency; efficiency envelope; design ... See more keywords
Nonstationary Signal Denoising Using an Envelope-Tracking Filter
Sign Up to like & getrecommendations! Published in 2018 at "IEEE/ASME Transactions on Mechatronics"
DOI: 10.1109/tmech.2017.2786265
Abstract: Signal denoising is crucial to condition monitoring of mechanical systems as fault characteristics may be hidden by strong noise in some cases. In this paper, we focus on the denoising of nonstationary vibration signals which… read more here.
Keywords: envelope; envelope tracking; filter; tracking filter ... See more keywords
A Uniform Digital Predistorter for Concurrent Multiband Envelope Tracking RF Power Amplifiers With Different Envelopes
Sign Up to like & getrecommendations! Published in 2018 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2018.2857828
Abstract: This paper proposes a uniform digital predistortion technique for concurrent multiband envelope tracking (ET) power amplifiers (PAs) under various supply modulation types, i.e., different envelopes. It is achieved by successfully dissolving the conventional envelope functions… read more here.
Keywords: multiband envelope; envelope; uniform digital; envelope tracking ... See more keywords