Results 241 to 250 of about 129,952 (301)

The involvement of attentional biases in endogenous pain inhibition and autonomic reactivity. [PDF]

PLoS One
Gozansky E, Weissman-Fogel I, Okon-Singer H.   +2 more
europepmc   +1 more source

Hierarchical Reconfigurable Metasurface Based on Scenario-Guided Functional Modules and Programmable Core. [PDF]

Adv Sci (Weinh)
Zhu L, Han J, Zheng Z, Feng Q, Xia D, Ma X, Mu Y, Luo G, Li R, Liu H, Xue H, Li L.   +11 more
europepmc   +1 more source

Mechanical control: parallel pathways for modulating movement. [PDF]

J Exp Biol
Reynaga CM, Azizi E.
europepmc   +1 more source

Heart rate and left ventricular remodeling after repaired coarctation of the aorta: a cross-sectional study.

Clin Hypertens
Vaccari M, Maldonado LE, Moros CG, Sardella A, Romo M, Romero CA, ARECO Study Group.   +6 more
europepmc   +1 more source

Random phase modulation in load modulated arrays

2017 IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2017
Load modulated arrays (LMAs) are gaining research attention as an attractive transmitter architecture for multiple-input multiple-output (MIMO) systems. A key advantage of LMAs is that they eliminate the need for RF chains at the transmitter (consisting of DACs, mixers, filters) and use only one central power amplifier for any number of antenna ...
Sandeep Bhat, A. Chockalingam
openaire   +2 more sources

Load Modulated Arrays Using Channel Modulation with RF Mirrors

2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring), 2019
Multiantenna transmission using load modulated arrays (LMAs) is gaining recent research interest. LMAs use a single central power amplifier and tune the antenna loads according to the information signal. In this paper, we propose a novel multiantenna transmitter architecture that can enable high-rate transmissions using LMAs.
Sandeep Bhat, A. Chockalingam
openaire   +2 more sources

LSE Precoder for Load Modulated Arrays With Channel Modulation

IEEE Wireless Communications Letters, 2020
In this letter, we consider novel multiuser precoding techniques suited for load modulated arrays (LMAs) on the downlink, wherein a base station employs an LMA to transmit data to multiple users. For implementation simplicity, it is desired that the antenna load impedance values in the LMA are drawn from a discrete set.
Sandeep Bhat, A. Chockalingam
openaire   +2 more sources

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Load modulated massive MIMO

2014 IEEE Global Conference on Signal and Information Processing (GlobalSIP), 2014
We propose a new hardware architecture for cost-and size-effective implementation of massive MIMO transmitters based on load modulation that is fully compatible with standard receiver architectures. With load modulation, a massive MIMO transmitter can be driven by a single power amplifier operating at constant envelope.
Ralf R. Müller, Mohammad Ali Sedaghat, Georg Fischer 0001   +2 more
openaire   +1 more source

Experimental investigation of bias current and load modulation effects in phase distortion of GaN HEMTs

Electronics Letters, 2014
The relationships between phase distortion, bias point and load modulation in power amplifiers are experimentally evaluated for two different GaN HEMT technologies.
Roberto Quaglia, Vittorio Camarchia, R Giofrè   +2 more
exaly   +2 more sources