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pro vyhledávání: '"Chakrabarty, Indrajit"'
Modeling and analysis of cooperative spectrum sensing is an important aspect in cognitive radio systems. In this paper, the problem of energy detection (ED) of an unknown signal over Nakagami-$m$ fading is revisited. Specifically, an analytical expre
Externí odkaz:
http://arxiv.org/abs/1504.08367
Publikováno v:
Int.J.Mod.Phys.D12:1113-1129,2003
In this paper, we study in detail a perfect fluid cosmological model with time-varying "constants" using dimensional analysis and the symmetry method. We examine the case of variable "constants" in detail without considering the perfect fluid model a
Externí odkaz:
http://arxiv.org/abs/gr-qc/0404046
Publikováno v:
Int.J.Mod.Phys.D12:861-883,2003
We study the evolution of a flat Friedmann-Robertson-Walker Universe, filled with a bulk viscous cosmological fluid, in the presence of time varying ``constants''. The dimensional analysis of the model suggests a proportionality between the bulk visc
Externí odkaz:
http://arxiv.org/abs/gr-qc/0404045
Publikováno v:
Gen. Rel. Grav., Vol. 34, No. 4, 477-490 (April 2002)
We have investigated cosmological models with a self-interacting scalar field and a dissipative matter fluid as the sources of matter. Different variables are expressed in terms of a {\it generating function}. Exact solutions are obtained for one par
Externí odkaz:
http://arxiv.org/abs/gr-qc/0005104
Autor:
Chakrabarty, Indrajit
In this article, I present an elementary introduction to the theory of gravitational waves. This article is meant for students who have had an exposure to general relativity, but, results from general relativity used in the main discussion have been
Externí odkaz:
http://arxiv.org/abs/physics/9908041
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Publikováno v:
Transactions of the Indian Ceramic Society; October 2020, Vol. 79 Issue: 4 p188-195, 8p
Autor:
Chakrabarty, Indrajit
Prepare for Microsoft Exam 70-484—and help demonstrate your real-world mastery of programming Windows Store apps using C#. Designed for experienced software developers ready to advance their status, Exam Ref focuses on the critical-thinking and dec
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Publikováno v:
International Journal of Modern Physics D: Gravitation, Astrophysics & Cosmology; Jul2003, Vol. 12 Issue 6, p1113, 17p