Results 41 to 50 of about 1,347 (153)
Tongxin xuebao, 2015 Based on the low-IF digital predistortion (DPD) architecture,a coordinate transformation based low-complex coefficients estimation algorithm is proposed to reduce the hardware implementation cost and numerical calculation complexity significantly.The ...
GHao HUAN +3 more
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, 2015 A non-parametric technique for modeling the behavior of power amplifiers is presented. The proposed technique relies on the principles of density estimation using the kernel method and is suited for use in power amplifier modeling.
Handel, Peter +3 more
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Evaluating GaN Doherty architectures for 4G Picocells, WiMax and microwave backhaul links [PDF]
, 2014 This paper evaluates the Doherty power amplifier architecture in terms of linearity, efficiency and design solutions. As case study four different prototypes are presented, one for 4G Picocells at 2.1 GHz, one for WiMax applications at 3.5 GHz and two ...
Camarchia, Vittorio +7 more
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Optimal Beamforming for Hybrid Satellite Terrestrial Networks with Nonlinear PA and Imperfect CSIT [PDF]
, 2020 In hybrid satellite-terrestrial networks (HSTNs), spectrum sharing is crucial to alleviate the "spectrum scarcity" problem. Therein, the transmit beams should be carefully designed to mitigate the inter-satellite-terrestrial interference.
Chen, Yunfei +4 more
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Multi-dimensional LUT-based digital predistorter for concurrent dual-band envelope tracking power amplifier linearization [PDF]
, 2018 ©2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Gilabert Pinal, Pere Lluís +4 more
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On Out-of-Band Emissions of Quantized Precoding in Massive MU-MIMO-OFDM
, 2017 We analyze out-of-band (OOB) emissions in the massive multi-user (MU) multiple-input multiple-output (MIMO) downlink. We focus on systems in which the base station (BS) is equipped with low-resolution digital-to-analog converters (DACs) and orthogonal ...
Coldrey, Mikael +3 more
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Digital Predistortion for High Efficiency Power Amplifier Architectures Using a Dual-input Modeling Approach [PDF]
, 2012 In this paper, a novel model is proposed for dual-input high efficiency power amplifier (PA) architectures, such as envelope tracking (ET) and varactor-based dynamic load modulation (DLM).
Cao, Haiying +4 more
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Partial least squares identification of multi look-up table digital predistorters for concurrent dual-band envelope tracking power amplifiers [PDF]
, 2018 ©208 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new ...
Gilabert Pinal, Pere Lluís +4 more
core +2 more sources
IEEE Journal of Microwaves, 2023 In this paper, we propose an efficient system approach to improve the power efficiency of dual-input Doherty power amplifier (DIDPA) with maintaining its linearity level. An auto-tuning process based on a hybrid heuristic search control (HHSC) is applied
Chouaib Kantana +3 more
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Green HSR Reliable Communication With LTE-R Using MIMO-DPD
IEEE Access, 2021 Reliable and efficient High-speed Railways (HSR) is the key component to the concept of Green Smart Cities to combat the prevailing traffic congestion on roads and increasing greenhouse gases in the atmosphere.
Anurag Vijay Agrawal, Meenakshi Rawat
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