Linearization Technologies for Broadband Radio-Over-Fiber Transmission Systems
Photonics, 2014 Linearization technologies that can be used for linearizing RoF transmission are reviewed. Three main linearization methods, i.e. electrical analog linearization, optical linearization, and electrical digital linearization are presented and compared ...
Xiupu Zhang +3 more
doaj +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 +4 more sources
Fiber link design considerations for cloud-Radio Access Networks [PDF]
, 2014 Analog radio over fiber (RoF) links may offer advantages for cloud-Radio Access Networks in terms of component cost, but the behavior of the distortion with large numbers of subcarriers needs to be understood. In this paper, this is presented in terms of
Luis C. Vieira +7 more
core +1 more source
Sparse Flexible Reduced-Volterra Model for Power Amplifier Digital Pre-Distortion
IEEE Access, 2022 The Volterra framework plays an important role in digital pre-distortion (DPD) for power amplifier (PA) linearization. In practice, the full-Volterra (FV) model is avoided due to the so-called curse of dimensionality, which has motivated several Volterra
Cyro S. Hemsi, Cristiano M. Panazio
doaj +1 more source
On-board signal predistortion for digital transparent satellites [PDF]
2015 IEEE 16th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), 2015 On-board processing (OBP), a paradigm that allows for manipulation of the signal at the satellite transponder, is being embraced by a large section of the satellite community. Exploiting OBP can lead to efficient implementation, bandwidth saving, lower redundancy, and better performance.
Nicolò Mazzali +2 more
openaire +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
Advanced digital predistortion of power amplifiers for mobile and wireless communications [PDF]
, 2009 This research work focuses on improving the performances of digital predistorters while maintaining low computational complexity for mobile and wireless communication systems.
Bondar, D.
core +1 more source
Hybrid Digital/Analog Predistorter Architecture With Enhanced Robustness to Hardware Impairments
IEEE AccessIn this paper, a hybrid predistortion architecture that allies the benefits of digital and analog predistortion techniques is investigated. This Hybrid Digital/Analog Predistorter (H-DAPD) uses a low order memory polynomial as a baseband digital ...
Majid Ahmed, Oualid Hammi
doaj +1 more source
Distortion correction of LDMOS power amplifiers using hybrid RF second harmonic injection/digital predistortion linearization [PDF]
, 2006 An LDMOS RF power amplifier for RF multichannel wireless systems with improved IMD performance characteristics is presented. The application of two combined linearization methods is being tested with the help of circuit simulation software ADS.
Budimir, D., Koulouzis, H.
core +1 more source
Research of compressed sensing for predistortion with relatively low sampling frequency
Tongxin xuebao, 2016 In order to improve the TWTA digital predistortion linearizer with relatively low sampling frequency, the LUT and indirect learning architecture were used, which was cumbersome.
Xin HU +6 more
doaj +2 more sources