Results 51 to 60 of about 4,686 (214)
Spurious-Free Dynamic Range Augmentation for Digital-to-Analog Converters using PSO-PID Adaptive Algorithms [PDF]
Journal of Electromagnetic Engineering and ScienceIn this paper, we propose a new method for enhancing the spurious-free dynamic range (SFDR) of digital-to-analog converters (DACs) by implementing a digital predistorter to suppress harmonic distortion.
Junshi Lv +4 more
doaj +1 more source
Equalization of Third-Order Intermodulation Products in Wideband Direct Conversion Receivers [PDF]
, 2008 This paper reports a SAW-less direct-conversion receiver which utilizes a mixed-signal feedforward path to regenerate and adaptively cancel IM3 products, thus accomplishing system-level linearization.
Hajimiri, Ali, Keehr, Edward A.
core +1 more source
Advanced Photonics Research, Volume 7, Issue 3, March 2026.This article proposes a deep learning (DL) approach for modeling and optimizing frequency‐doubled radio‐over‐fiber links. By collectively replacing traditional components with DL model, accurate system evaluation is achieved. Moreover, through an end‐to‐end architecture, performance optimization is accomplished.
Difei Shi +3 more
wiley +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 73-88, January/February 2026.The potential gains of NOMA were evaluated in a satellite system with heterogeneous receivers, after considering the use of specific DVB‐S2X MODCODs, along with the impact of non‐linearities. It was concluded that a judicious power allocation in NOMA, jointly optimized with the IBO of the PAs, can yield significant sum‐rate gains.
Tomás Ramírez, Carlos Mosquera
wiley +1 more source
, 2016 Noncontiguous transmission schemes combined with high power-efficiency requirements pose big challenges for radio transmitter and power amplifier (PA) design and implementation.
Abdelaziz, Mahmoud +5 more
core +1 more source
Low Complexity Partial Transmit Sequence with Complex Gain Memory Predistortion in OFDM Systems. [PDF]
, 2012 In this paper the peak to average power ratio (PAPR) reduction and digital predistortion effects in orthogonal frequency division multiplexing (OFDM) systems are investigated. By applying a predistortion technique called complex gain memory predistortion
Mohd Ali, Borhanuddin, Varahram, Pooria
core +1 more source
Digital Predistortion with ROVA
2025 105th ARFTG Microwave Measurement Conference (ARFTG)To improve the linearity and efficiency of power amplifiers (PAs), it is nowadays paramount to predistort them using digital predistortion (DPD). An accurate model is needed for the predistorter, and this paper proposes and shows that the frequency-domain ROVA (seRies expansiOn of the Volterra Approach) model fits perfectly here.
Varano, Amedeo +5 more
openaire +2 more sources
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 47-59, January/February 2026.The performance limitation in multiple‐input multiple‐output (MIMO) feeder links due to time and phase misalignment of the ground stations is investigated. Time and phase distribution over optical fiber is considered as an approach to achieve the synchronization requirements.
Eriserdi Mollaymeri +2 more
wiley +1 more source
, 2013 The concept of space mapping is applied, for the first time, to the design of microwave dispersive delay structures (DDSs). DDSs are components providing specified group delay versus frequency responses for real-time radio systems. The DDSs considered in
Bandler, John W. +2 more
core +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
Assimakopoulos, Philippos +3 more
core +1 more source