Results 71 to 80 of about 1,347 (153)
High efficiency power amplifiers for modern mobile communications: The load-modulation approach [PDF]
, 2017 Modern mobile communication signals require power amplifiers able to maintain very high efficiency in a wide range of output power levels, which is a major issue for classical power amplifier architectures.
Camarchia, Vittorio +4 more
core +4 more sources
IEEE AccessWe present an X-band transceiver with memory polynomial digital predistortion (MP-DPD) and neural network digital predistortion (NN-DPD) for a dual-function radar and communication (DFRC) system targeting 6G FR3 in $0.25\mu $ m GaN High Electron ...
Tae-Hoon Kim +4 more
doaj +1 more source
Carrier Aggregated Radio-Over-Fiber Downlink for Achieving 2Gbps for 5G Applications
IEEE Access, 2019 We demonstrate experimentally, for the first time, a distributed digital predistortion model for radio-over-fiber (RoF) downlink suitable for broadband 5G signals.
Mahmood Noweir +3 more
doaj +1 more source
Model-Order Reduction of Multistage Cascaded Models for Digital Predistortion
IEEE Journal of MicrowavesThis paper explores the benefits of utilizing multistage cascaded (CC) behavioral models for digital predistortion (DPD) linearization of wideband high-efficiency power amplifiers (PAs).
Raul Criado +5 more
doaj +1 more source
A design strategy for AM/PM compensation in GaN Doherty power amplifiers [PDF]
, 2017 This paper presents the theoretical analysis of phase distortion (AM/PM) mechanisms in Gallium Nitride (GaN) Doherty power amplifiers (DPAs) and a novel approach to optimize the tradeoff between linearity and efficiency. In particular, it is demonstrated
Camarchia, Vittorio +7 more
core +3 more sources
A 5 th-order analog predistorter for NADC system [PDF]
, 2010 This paper presents the design of a 5th-order analog predistorter using the inband intermodulation (IM) signals for predistortion of base-station high power amplifiers (HPAs) for the North American Digital Cellular (NADC) system. The predistorter employs
Cheung, SW, Sun, XL, Yuk, TI
core +1 more source
IEEE AccessWith the cutting-edge 5G/6G signals and corresponding demands of the multi-band and ultra-wideband transmitters, numerous digital predistortion (DPD) models have been proposed for the removal of Power Amplifier’s (PA) distortions in concurrent ...
Praveen Jaraut +4 more
doaj +1 more source
An RF predistorter for base station HPAs of NADC system [PDF]
, 2009 This paper presents the design of an effective and low cost RF predistorter for use in the base-station high power amplifiers (HPAs) of the North American Digital Cellular (NADC) system. A complex polynomial is used to model the characteristic of the HPA
Cheung, SW, Xiao, MX, Yuk, TI
core +1 more source
ワイヤレス通信のための先進的な信号処理技術を用いた非線形補償法の研究 [PDF]
, 2016 The inherit nonlinearity in analogue front-ends of transmitters and receivers have had primary impact on the overall performance of the wireless communication systems, as it gives arise of substantial distortion when transmitting and processing signals ...
Yuelin Ma, 馬 岳林
core +2 more sources
Kalman filtering algorithm for on-line memory polynomial predistortion
, 2008 International ...
Bachir, Smail +2 more
core +1 more source