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In automotive radar applications, multiple radars are used in all vehicles for improving the imaging quality. However this causes radar-to-radar interference from neighbouring vehicles, thus reducing the imaging quality. One metric to…

Information Theory · Computer Science 2020-10-05 Sudharsan Parthasarathy , Rakshith Jagannath

In this paper, we propose the {\alpha}-Lomax distribution as a new compound fading channel model. This new distribution generalizes the recently introduced Lomax fading channel model. It is worth noting that the Lomax distribution is a…

Information Theory · Computer Science 2024-06-07 Osamah S. Badarneh , Daniel Benevides da Costa

We study numerically the thermal conductivity coefficient $\kappa$ as a function of system length $L$ for several different quasi one dimensional models: classical gases of hard spheres with both longitudinal and transverse degrees of…

Statistical Mechanics · Physics 2009-11-10 J. M. Deutsch , Onuttom Narayan

We have experimentally investigated a chaotic reverberation chamber in the regime of strong modal overlap ($1{<}d{<}150$) varying the opening as well as the coupling strength $\kappa$ of the two attached antennas. We find a good agreement…

Disordered Systems and Neural Networks · Physics 2020-10-08 Ulrich Kuhl , Olivier Legrand , Fabrice Mortessagne , Khalid Oubaha , Martin Richter

In this contribution, models of wireless channels are derived from the maximum entropy principle, for several cases where only limited information about the propagation environment is available. First, analytical models are derived for the…

Information Theory · Computer Science 2007-07-13 M. Guillaud , M. Debbah , A. L. Moustakas

Tap-proof long-distance quantum communication requires a deep understanding of the strong losses in transmission channels. Here we provide a rigorous treatment of the effects of beam wandering, one of the leading disturbances in atmospheric…

Quantum Physics · Physics 2012-06-05 D. Yu. Vasylyev , A. A. Semenov , W. Vogel

Using the framework of supersymmetric non-linear $\sigma$-model we develop a general non-perturbative characterisation of universal features of the density $\rho(\Gamma)$ of the imaginary parts (``width'') for $S$-matrix poles…

Disordered Systems and Neural Networks · Physics 2023-06-06 Yan V. Fyodorov , Mikhail A. Skvortsov , Konstantin S. Tikhonov

The free-space transfer of high-fidelity optical signals between remote locations has many applications, including both classical and quantum communication, precision navigation, clock synchronization, etc. The physical processes that…

Quantum Physics · Physics 2017-07-21 D. Vasylyev , A. A. Semenov , W. Vogel

This paper deals with propagation and channel modeling for physically large arrays. The focus lies on acquiring a spatially consistent model, which is essential, especially for positioning and sensing applications. Ultra-wideband, synthetic…

Signal Processing · Electrical Eng. & Systems 2023-05-11 Thomas Wilding , Benjamin J. B. Deutschmann , Christian Nelson , Xuhong Li , Fredrik Tufvesson , Klaus Witrisal

We study the semiclassical propagation of coherent states in $d$ dimensions, which in general involves complex classical dynamics. Several simple approximations are derived that depend only on real classical trajectories, among them the…

Quantum Physics · Physics 2007-12-04 M. Novaes , M. A. M. de Aguiar

Scattering on a resonance state coupled to a complicated background is a typical problem for mesoscopic quantum many-body systems as well as for wave propagation in the presence of a complex environment. On average, such a simple mode…

Mesoscale and Nanoscale Physics · Physics 2020-03-09 Dmitry V. Savin

The dispersion laws of Langmuir and transverse waves are calculated in the relativistic non-magnetized formalism for several isotropic particle distributions: thermal, power-law, relativistic Lorentzian $\kappa,$ and hybrid $\beta$. For…

Plasma Physics · Physics 2009-11-13 Roman V. Shcherbakov

We present a possible extension of the random-matrix theory, which is widely used to describe spectral fluctuations of chaotic systems. By considering the Kaniadakis non-Gaussian statistics, characterized by the index {\kappa}…

Chaotic Dynamics · Physics 2012-04-24 A. Y. Abul-Magd , M. Abdel-Mageed

We consider the diffuse gamma ray data from FERMI first year observations and compare them to the gamma ray fluxes predicted by Dark Matter annihilation or decay (both from prompt emission and from Inverse Compton Scattering), for different…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-13 Marco Cirelli , Paolo Panci , Pasquale D. Serpico

The pseudo-potential method is applied to derive diverse propagating electron hole structures, in a nonthermal or $\kappa$ particle distribution function background. The associated distribution function Ansatz reproduces the Schamel…

Plasma Physics · Physics 2021-08-11 Fernando Haas

Approximate outage probability expressions are derived for systems employing maximum ratio combining, when both the desired signal and the interfering signals are subjected to $\eta-\mu$ fading, with the interferers having unequal power.…

Information Theory · Computer Science 2018-05-22 Muralikrishnan Srinivasan , Sheetal Kalyani

The gamma distribution arises frequently in Bayesian models, but there is not an easy-to-use conjugate prior for the shape parameter of a gamma. This inconvenience is usually dealt with by using either Metropolis-Hastings moves, rejection…

Computation · Statistics 2018-08-01 Jeffrey W. Miller

Over the last two decades, it has been argued that the Lorentz transformation mechanism, which imposes the generalization of Newton's classical mechanics into Einstein's special relativity, implies a generalization, or deformation, of the…

Statistics Theory · Mathematics 2022-03-04 G. Kaniadakis

Using tools from extreme value theory (EVT), it is proved that, when the user signal and the interferer signals undergo independent and non-identically distributed (i.n.i.d.) $\kappa-\mu$ shadowed fading, the limiting distribution of the…

Information Theory · Computer Science 2019-10-29 Athira Subhash , Muralikrishnan Srinivasan , Sheetal Kalyani

Diffuse emission from the Milky Way dominates the gamma-ray sky. About 80% of the high-energy luminosity of the Milky Way comes from processes in the interstellar medium. The Galactic diffuse emission traces interactions of energetic…

Astrophysics · Physics 2009-02-25 T. A. Porter , S. W. Digel , I. A. Grenier , I. V. Moskalenko , A. W. Strong
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