4,358 research outputs found
Context-Awareness Enhances 5G Multi-Access Edge Computing Reliability
The fifth generation (5G) mobile telecommunication network is expected to
support Multi- Access Edge Computing (MEC), which intends to distribute
computation tasks and services from the central cloud to the edge clouds.
Towards ultra-responsive, ultra-reliable and ultra-low-latency MEC services,
the current mobile network security architecture should enable a more
decentralized approach for authentication and authorization processes. This
paper proposes a novel decentralized authentication architecture that supports
flexible and low-cost local authentication with the awareness of context
information of network elements such as user equipment and virtual network
functions. Based on a Markov model for backhaul link quality, as well as a
random walk mobility model with mixed mobility classes and traffic scenarios,
numerical simulations have demonstrated that the proposed approach is able to
achieve a flexible balance between the network operating cost and the MEC
reliability.Comment: Accepted by IEEE Access on Feb. 02, 201
A comparative study of overlap and staggered fermions in the Schwinger model
We investigate the validity of the square rooting procedure of the staggered
determinant in the context of the Schwinger model. We find some evidence that
at fixed physical quark mass the square root of the staggered determinant
becomes proportional to the overlap determinant in the continuum limit. We also
find that at fixed lattice spacing moderate smearing dramatically improves the
chiral behavior of staggered fermions.Comment: Contribution to LATTICE 2004 (Chiral fermions
On the moments of the characteristic polynomial of a Ginibre random matrix
In this article we study the large asymptotics of complex moments of the absolute value of the characteristic polynomial of a complex Ginibre random matrix with the characteristic polynomial evaluated at a point in the unit disk. More precisely, we calculate the large asymptotics of , where is a matrix whose entries are i.i.d and distributed as , being a standard complex Gaussian, , and . This expectation is proportional to the determinant of a complex moment matrix with a symbol which is supported in the whole complex plane and has a Fisher-Hartwig type of singularity: . We study the asymptotics of this determinant using recent results due to Lee and Yang concerning the asymptotics of orthogonal polynomials with respect to the weight along with differential identities familiar from the study of asymptotics of Toeplitz and Hankel determinants with Fisher-Hartwig singularities. To our knowledge, even in the case of one singularity, the asymptotics of the determinant of such a moment matrix whose symbol has support in a two-dimensional set and a Fisher-Hartwig singularity, have been previously unknown.Christian Webb was supported by the Academy of Finland grants 288318 and 308123.
Mo Dick Wong is supported by the Croucher Foundation Scholarship and EPSRC grant EP/L016516/1 for his PhD study at Cambridge Centre for Analysis
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