Results 31 to 40 of about 2,155 (213)
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
Optimized MSA DPD method for improving 5G multiband optical fronthaul performance
Microwave and Optical Technology Letters, Volume 65, Issue 12, Page 3326-3332, December 2023., 2023 Abstract A modified optimized magnitude‐selective affine (OMSA) model‐based digital predistortion (DPD) is presented that introduces the weighting function into our earlier proposed magnitude‐selective affine (MSA) method with an aim to further reduce the complexity overheads without affecting performance compared to the MSA method. This model utilizes
Muhammad Usman Hadi +2 more
wiley +1 more source
Digital Predistortion in Large-Array Digital Beamforming Transmitters [PDF]
2018 52nd Asilomar Conference on Signals, Systems, and Computers, 2018 8 pages, Accepted for publication in Asilomar Conference on Signals, Systems, and ...
Alberto Brihuega +3 more
openaire +3 more sources
IET Optoelectronics, Volume 17, Issue 4, Page 139-148, August 2023., 2023 The accuracy of the generalised memory polynomial (GMP) for the non‐linear modelling of optical Fast‐OFDM links is studied. The GMP is used for performance investigations of a distortion compensation approach to IM/DD Fast‐OFDM. Excellent BER improvements are achieved using the proposed compensation scheme, for up to 16PAM modulation and 256 Fast‐OFDM ...
Luis Carlos Vieira +3 more
wiley +1 more source
Experimental demonstration of digital predistortion for orthogonal frequency-division multiplexing-radio over fibre links near laser resonance [PDF]
, 2015 Radio over fibre (RoF), an enabling technology for distribution of wireless broadband service signals through analogue optical links, suffers from non-linear distortion. Digital predistortion has been demonstrated as an effective approach to overcome the
Vieira, Luis Carlos, Gomes, Nathan J.
core +1 more source
Wiener predistorter for nonlinear satellite downlinks
International Journal of Satellite Communications and Networking, Volume 41, Issue 4, Page 392-405, July/August 2023., 2023 The nonlinear power amplifier and the analogue output channel filter add distortions to the satellite‐transmitted signal. Wiener predistorter is an effective method to deal with such signal distortions. In this work, we show that fully compensating for the channel filter group‐delay distortion degrades the performance of the Wiener predistortion system.
Azam Mehboob +3 more
wiley +1 more source
Digital Predistortion in High Throughput Satellites: Architectures and Performance
IEEE Access, 2021 The future of satellites lies in the deployment of high throughput satellites (HTS). Moreover, HTS will also play an important role in the up coming 5G mobile networks where HTS will provide services like disaster relief, remote automation, maritime ...
Ovais Bin Usman, Andreas Knopp
doaj +1 more source
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
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
Doherty power amplifier with simplified out‐of‐phase power splitter for 5G applications
Electronics Letters, Volume 59, Issue 13, July 2023., 2023 Abstract This letter presents the architecture and characterization of a Doherty power amplifier (DPA) with a simplified out‐of‐phase power splitter (SOPPS) for fifth‐generation (5G) small‐cell applications. The proposed SOPPS consists of two passive components, which is conducive to chip miniaturization.
Jianqiang Chen +5 more
wiley +1 more source