Results 21 to 30 of about 1,263,266 (290)
Journal of Marine Science and Engineering, 2021 For a long time, the development of maritime communication has been restricted by the low data rate, high-latency and high cost of the current communication systems.
Changzhen Li +5 more
doaj +1 more source
‘Codes are not enough…’: a report of ongoing research [PDF]
, 2008 We consider the problem of rate allocation in a fading Gaussian multiple-access channel (MAC) with fixed transmission powers. Our goal is to maximize a general concave utility function of transmission rates over the throughput capacity region.
Eryilmaz, Atilla +3 more
core +4 more sources
Channels, measurements, and postselection in quantum thermodynamics [PDF]
Physical Review E, 2021 We analyse the benefit, in terms of extracting work, of having a single use of a quantum channel or measurement in quantum thermodynamics. This highlights a connection between unital and catalytic channels, and some subtleties concerning the conditional work cost of implementing a measurement given that a certain result was obtained.
Purves, Tom, Short, Anthony J
openaire +5 more sources
Experimental measurement-device-independent quantum digital signatures over a metropolitan network [PDF]
, 2017 Quantum digital signatures (QDS) provide a means for signing electronic communications with informationtheoretic security. However, all previous demonstrations of quantum digital signatures assume trusted measurement devices. This renders them vulnerable
Andersson, Erika +18 more
core +2 more sources
Dynamic measurements for funny channels [PDF]
Proceedings of the National Academy of Sciences, 2014 Proteins possess the uncanny ability to telegraph signals over long distances. The presence of a ligand, snugly bound to a site on one end of a molecule, can be “felt” by an effector domain several nanometers away. Determining precisely how this task is accomplished is a major challenge for structural biologists.
openaire +2 more sources
Shear Flows of Rapidly Flowing Granular Materials [PDF]
, 1987 Shear flows of granular materials are studied in an open channel. The wall shear is calculated from an open channel momentum equation which includes the density variations in the flow.
Brennen, C. E. +2 more
core +1 more source
Vehicle-to-Vehicle Propagation Channel Performance for Overtaking Cases Based on Measurements
IEEE Access, 2019 Overtaking case is a common traffic situation, but it is likely to pose a threat to traffic safety. To ensure reliable communication, it is necessary to study the characteristics of wireless channel under overtaking cases.
Fuxing Chang +5 more
doaj +1 more source
Sequential Projective Measurements for Channel Decoding
Physical Review Letters, 2011 We study the transmission of classical information in quantum channels. We present a decoding procedure that is very simple but still achieves the channel capacity. It is used to give an alternative straightforward proof that the classical capacity is given by the regularized Holevo bound.
LLOYD S +2 more
openaire +7 more sources
Non-Directional Property of Human–Body Communication Channel for Implantable Device Application
Sensors, 2023 In this paper, we present the properties of a communication channel used for implantable devices. The human–body communication (HBC) channel was proposed for data communication in implantable devices.
Jaehyo Jung +3 more
doaj +1 more source
On wireless channel modelling : extraction of channel from channel measurements [PDF]
2007 International Symposium on Communications and Information Technologies, 2007 Next generation systems are using directional antennas for indoor high data rate devices. This arises a need for measurement and modelling of directional channels. Indoor environments also introduce extreme multipath behaviour into the directional channel.
Aastha Gupta +2 more
openaire +1 more source