Results 41 to 50 of about 854,677 (295)

Virtual Large-Scale Array Beamforming Analysis Using Measured Subarray Antenna Patterns

IEEE Access, 2017
An accurate and reliable massive MIMO channel model is crucial for supporting design and performance evaluation of such systems in the future. However, massive MIMO channel sounding systems are cost prohibitive and complicated, where a large number of ...
Fengchun Zhang, Wei Fan, Jianhua Zhang, Gert Frolund Pedersen   +3 more
doaj   +1 more source

Fine description method of the underwater distributary channel in a braided river delta front: A case study of the first Member of the Dongying Formation in the M Oilfield, Nanpu Depression

地质科技通报, 2023
The division accuracy of a single-genesis sand body in a river channel determines the evaluation resolution of residual oil content and limits the efficiency of oil production.
Lili Qu, Jian Duan, Chenglin Yu, Weiqiang Lin, Yuwei Qiu   +4 more
doaj   +1 more source

Necessary Conditions for K/2 Degrees of Freedom

, 2018
Stotz et al., 2016, reported a sufficient (injectivity) condition for each user in a K-user single-antenna constant interference channel to achieve 1/2 degree of freedom.
Bölcskei, Helmut, Gül, Recep, Shamai, Shlomo   +2 more
core   +1 more source

Characterizing the 80 GHz Channel in Static Scenarios: Diffuse Reflection, Scattering, and Transmission Through Trees Under Varying Weather Conditions

IEEE Access
The deployment of wireless systems in millimeter wave relies on a thorough understanding of electromagnetic wave propagation under various weather conditions and scenarios.
Radek Zavorka, Tomas Mikulasek, Josef Vychodil, Jiri Blumenstein, Aniruddha Chandra, Hussein Hammoud, Jan M. Kelner, Cezary Ziolkowski, Thomas Zemen, Christoph Mecklenbrauker, Ales Prokes   +10 more
doaj   +1 more source

Assessment of Blood Vessel Effect on Fat-Intrabody Communication Using Numerical and Ex-Vivo Models at 2.45 GHz

IEEE Access, 2019
The potential offered by the intra-body communication (IBC) over the past few years has resulted in a spike of interest for the topic, specifically for medical applications.
Noor Badariah Asan, Emadeldeen Hassan, Mauricio David Perez, Syaiful Redzwan Mohd Shah, Jacob Velander, Taco J. Blokhuis, Thiemo Voigt, Robin Augustine   +7 more
doaj   +1 more source

Design and Realization of a Multiple Access Wireless Power Transfer System for Optimal Power Line Communication Data Transfer

Energies, 2019
In this contribution, the authors evaluate the possibility of using separated access points for power and data transfer in a coupled Wireless Power Transfer-Powerline Communication system.
Sami Barmada, Mauro Tucci, Nunzia Fontana, Wael Dghais, Marco Raugi   +4 more
doaj   +1 more source

A power efficient neural spike recording channel with data bandwidth reduction [PDF]

, 2011
This paper presents a mixed-signal neural spike recording channel which features, as an added value, a simple and low-power data compression mechanism.
Delgado Restituto, Manuel, Rodríguez Pérez, Alberto, Rodríguez Rodríguez, José Antonio, Rodríguez Vázquez, Ángel Benito, Ruiz Amaya, Jesús   +4 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Quantum process tomography of a high-dimensional quantum communication channel [PDF]

Quantum, 2019
The characterization of quantum processes, e.g. communication channels, is an essential ingredient for establishing quantum information systems. For quantum key distribution protocols, the amount of overall noise in the channel determines the rate at ...
Frédéric Bouchard, Felix Hufnagel, Dominik Koutný, Aazad Abbas, Alicia Sit, Khabat Heshami, Robert Fickler, Ebrahim Karimi   +7 more
doaj   +1 more source

LTE RSRP, RSRQ, RSSNR and local topography profile data for RF propagation planning and network optimization in an urban propagation environment [PDF]

, 2018
In the design of 5G cellular communication to guarantee quality signal reception at every point within a coverage area, fundamental knowledge of the channel propagation characteristics is vital.
Hamid, Oliveri, Popoola, Prather
core   +2 more sources