192,085 research outputs found
Exponential wealth distribution: a new approach from functional iteration theory
Exponential distribution is ubiquitous in the framework of multi-agent
systems. Usually, it appears as an equilibrium state in the asymptotic time
evolution of statistical systems. It has been explained from very different
perspectives. In statistical physics, it is obtained from the principle of
maximum entropy. In the same context, it can also be derived without any
consideration about information theory, only from geometrical arguments under
the hypothesis of equiprobability in phase space. Also, several multi-agent
economic models based on mappings, with random, deterministic or chaotic
interactions, can give rise to the asymptotic appearance of the exponential
wealth distribution. An alternative approach to this problem in the framework
of iterations in the space of distributions has been recently presented.
Concretely, the new iteration given by . It is found that the
exponential distribution is a stable fixed point of the former functional
iteration equation. From this point of view, it is easily understood why the
exponential wealth distribution (or by extension, other kind of distributions)
is asymptotically obtained in different multi-agent economic models.Comment: 6 pages, 5 figure
Design and Experimental Validation of a Software-Defined Radio Access Network Testbed with Slicing Support
Network slicing is a fundamental feature of 5G systems to partition a single
network into a number of segregated logical networks, each optimized for a
particular type of service, or dedicated to a particular customer or
application. The realization of network slicing is particularly challenging in
the Radio Access Network (RAN) part, where multiple slices can be multiplexed
over the same radio channel and Radio Resource Management (RRM) functions shall
be used to split the cell radio resources and achieve the expected behaviour
per slice. In this context, this paper describes the key design and
implementation aspects of a Software-Defined RAN (SD-RAN) experimental testbed
with slicing support. The testbed has been designed consistently with the
slicing capabilities and related management framework established by 3GPP in
Release 15. The testbed is used to demonstrate the provisioning of RAN slices
(e.g. preparation, commissioning and activation phases) and the operation of
the implemented RRM functionality for slice-aware admission control and
scheduling
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