Results 21 to 30 of about 522,559 (296)
Gap Junction Channels and Cardiac Impulse Propagation [PDF]
Journal of Membrane Biology, 2007 The role of gap junction channels on cardiac impulse propagation is complex. This review focuses on the differential expression of connexins in the heart and the biophysical properties of gap junction channels under normal and disease conditions. Structural determinants of impulse propagation have been gained from biochemical and immunocytochemical ...
Desplantez, T +3 more
openaire +5 more sources
Optical Materials: X, 2019 Channel waveguides were directly written in Er: TeO2W2O3 glass using 11 MeV C4+ ion microbeam with fluences in the range of 1·1014–5·1016 ion/cm2. The channel waveguides supported a single guided mode at λ = 1540 nm.
István Bányász +12 more
doaj +1 more source
IEEE Access, 2022 The Internet of Things (IoT) has rapidly expanded for a wide range of applications towards a smart future world by connecting everything. As a result, new challenges emerge in meeting the requirements of IoT applications while retaining optimal ...
Haider A. H. Alobaidy +4 more
doaj +1 more source
A Software-Defined Channel Sounder for Industrial Environments with Fast Time Variance [PDF]
, 2018 Novel industrial wireless applications require wideband, real-time channel characterization due to complex multipath propagation. Rapid machine motion leads to fast time variance of the channel's reflective behavior, which must be captured for radio ...
Block, Dimitri +2 more
core +3 more sources
Advances in Mathematical Physics, 2022 City image reflects a city’s comprehensive competitiveness and is also an important indicator of a city’s spiritual civilization and urbanization process. A good city image is an intangible asset of a city, which can contribute to the political, economic,
Qi Sun
doaj +1 more source
Aspects of Favorable Propagation in Massive MIMO
, 2014 Favorable propagation, defined as mutual orthogonality among the vector-valued channels to the terminals, is one of the key properties of the radio channel that is exploited in Massive MIMO.
Larsson, Erik G. +2 more
core +1 more source
Terahertz wave propagation and channel characterization
Tongxin xuebao, 2022 Firstly, the different characteristics of terahertz waves compared to lower frequency bands were summarized, including the influence of meteorological factors and rough surfaces of materials on THz waves.Next, it was proposed to use ray-tracing (RT ...
Haofan YI +5 more
doaj +2 more sources
IEEE Access, 2021 This paper investigates the wideband channel characteristics obtained in a classroom and a hall indoor scenarios at 2-4, 9-11 and 27-29GHz. A virtual uniform circular array (UCA) based channel sounding system was utilized to capture wideband spatial ...
Guojin Zhang +7 more
doaj +1 more source
On the Spectral Efficiency for Distributed Massive MIMO Systems
Applied Sciences, 2021 Distributed MIMO (D-MIMO) systems are expected to play a key role in deployments for future mobile communications. Together with massive MIMO technology, D-MIMO aims to maximize the spectral efficiency and data rate in mobile networks.
Alejandro Ramírez-Arroyo +4 more
doaj +1 more source
Investigation of Wireless Channel Asymmetry in Indoor Environments
, 2017 Asymmetry is unquestionably an important characteristic of the wireless propagation channel, which needs to be accurately modeled for wireless and mobile communications, 5G networks, and associated applications such as indoor/outdoor localization.
Ali, Nazar +3 more
core +1 more source