Results 41 to 50 of about 2,155 (213)
Digital Predistortion Utilizing Over-the-Air Feedback for Phased Arrays
IEEE Access, 2021 In this paper, an efficient digital predistortion (DPD) architecture utilizing over-the-air (OTA) feedback is presented to linearize phased array transmitters.
Ying Liu +5 more
doaj +1 more source
IET Circuits, Devices &Systems, Volume 2023, Issue 1, 2023., 2023 A power amplifier design operating at 28 GHz for communication applications is presented in this paper. Analog predistorted technique is used to improve the linearity using a cold mode MOSFET linearizer. The paper reports +19.8 dBm of peak power at the output and power‐added efficiency (PAE) of 17% is attained by the designed circuit.
N. A. Quadir +5 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
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
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
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
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
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
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
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