Results 21 to 30 of about 35,253,731 (205)
Attention mechanism based bidirectional LSTM model for broadband power amplifier linearization
Electronics Letters, Volume 59, Issue 14, July 2023., 2023 In this letter, a novel model for broadband power amplifier (PA) linearization is proposed, namely Attention Mechanism based Bidirectional Long Short‐term Memory network (AM‐BiLSTM). In order to verify the linearization performance of the AM‐BiLSTM model, a 100 MHz bandwidth 5G new radio (5G NR) signal is employed to test the sub‐6G PA operating at 2.6‐
Rina Su +3 more
wiley +1 more source
Efficient Digital Predistortion Using Sparse Neural Network
IEEE Access, 2020 This paper proposes an efficient neural-network-based digital predistortion (DPD), named as envelope time-delay neural network (ETDNN) DPD. The method complies with the physical characteristics of radio-frequency (RF) power amplifiers (PAs) and uses a ...
Masaaki Tanio +2 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
Digital Predistortion for Multiuser Hybrid MIMO at mmWaves [PDF]
IEEE Transactions on Signal Processing, 2020 final version of the article; accepted for publication in IEEE Transactions on Signal ...
Alberto Brihuega +5 more
openaire +5 more sources
Digitally Assisted Harmonic Cancellation for Multi-Octave Filter-Less Transmitter
IEEE Access, 2020 This paper presents and demonstrates the design of a filter-less transmitter architecture with digitally assisted harmonic cancellation. A neural network is used to model the harmonics as well as IMD for digital predistortion applications.
Hemant Kumar Singhal, Karun Rawat
doaj +1 more source
Performance of digital predistorter in system with analogue to digital converter
IET Communications, 2022 Abstract The baseband digital pre‐distortion (DPD) signal processing technique is the most cost‐effective linearisation method among other techniques to address the nonlinearity effect of the power amplifier. For communication systems containing DPD and power amplifier, it is difficult to acquire performance metrics closed‐forms for ...
Ramez Moh. Elaskary +3 more
openaire +2 more sources
IEEE Access, 2020 For higher data throughput, the Massive Multi-input Multi-output (MIMO) system has been widely used in modern communication systems. Due to the circuit size and power consumption, it is difficult to integrate one Radio Frequency (RF) chain for each power
Caoyu Li +4 more
doaj +1 more source
IET Science, Measurement & Technology, 2021 The noise is an inherent part of a transceiver system, which becomes more severe on low‐cost systems. The power amplifier (PA) further enhances this noise and the signal to be propagated to the receiver. The conventional approach of digital predistortion
Girish Chandra Tripathi, Meenakshi Rawat
doaj +1 more source
Digital Predistortion for Hybrid MIMO Transmitters [PDF]
IEEE Journal of Selected Topics in Signal Processing, 2018 Accepted for publication in IEEE Journal of Selected Topics in Signal ...
Mahmoud Abdelaziz +4 more
openaire +4 more sources
Time-Domain Predistortion Method Based on Raised Cosine Signaling in Real Transmission Channels
Active and Passive Electronic Components, 2012 The concept of time-domain predistortion method based on raised cosine signaling is applied in real transmission channels. The proposed PWM-RC method uses raised-cosine pulse shaping instead of conventional rectangular digital signals and pulse-width ...
Bretislav Sevcik
doaj +1 more source