Quantum Key Distribution (QKD) or ”quantum cryptography” is a Quantum Mechanics based cryptographic primitive which, in principle, holds the potential of absolutely secure communication that cannot be compromised by any eavesdropping technique. The strength of the QKD primitive is the unconditionally secure simultaneous generation of two identical bit streams at two distinct locations which sub...

In this research, the impact of shoulder width and geometry of gas channel with different structures on proton exchange membrane (PEM) has been investigated using numerical method. 3D, non-isothermal was used with single straight channel geometrywhile maintaining the same boundary conditions and reaction area with addition of humidification for anode and cathode. Our study showed that an ellipt...

We determine analytic expressions for the performance of some low-complexity combined source-channel coding systems. The main tool used is the Hadamard transform. In particular, we obtain formulas for the average distortion of binary lattice vector quantization with affine index assignments, linear block channel coding, and a binary-symmetric channel. The distortion formulas are specialized to ...

The periodic flexural-gravity waves propagating along a frozen channel are investigated. has rectangular cross section. fluid in the is inviscid, incompressible and covered with ice. ice modeled by thin elastic plate whose thickness varies linearly. Two cases have been considered: symmetrically across channel, being smallest at center of largest walls; from value one wall to another wall. 2D pr...

We study an entangled two-mode coherent state within the framework of2×2-dimensional Hilbert space. We investigate the problem of quantum teleportation ofa superposition coherent state via an entangled coherent channel. By three differentmeasures with the titles ``minimum assured fidelity (MASF)”, ``average teleportationfidelity” and ``optimal fidelity (f)” we study the ...

Wolf and Ungerboeck [ 11 considered constructing good trellis codes for transmitting information over a partial response channel where the decoder is matched both to the redundancy of the code and to the intersymbol interference generated by the channel. A method of constructing these trellis codes suggested by Wolf and Ungerboeck was to utilize a binary convolutional code with 2 (I states and ...

This paper presents an experimental research on the distribution of local friction factor, fb, and global friction factor, f, over the cross-section of a channel with V-shaped bottom, which typically occurs in sewers and culverts. Several series of experiments were conducted for measuring velocity and boundary shear stress. It is found that, Darcy-Weisbach, f, is more sensitive than other resis...

Consider a memoryless degraded broadcast channel (DBC) in which the channel output is a singleletter function of the channel input and the channel noise. As examples, for the Gaussian broadcast channel (BC) this single-letter function is regular Euclidian addition and for the binary-symmetric BC this single-letter function is Galois-Field-two addition. This paper identifies several classes of d...