نتایج جستجو برای: polar modulation

تعداد نتایج: 194640  

Journal: :IEICE Transactions on Communications 2023

In recent years, physical layer security (PLS), which utilizes the inherent randomness of wireless signals to perform encryption at layer, has attracted attention. We propose chaos modulation as a PLS technique. addition, method for using special encoder polar codes been proposed (PLS-polar), in can be easily achieved by encrypting frozen bits code. Previously, we chaos-modulated code transmiss...

Journal: :Annales Geophysicae 2023

Abstract. Polar mesospheric summer echo (PMSE) formation is linked to charged dust/ice particles in the mesosphere. We investigate modulation of PMSEs with radio waves based on measurements EISCAT VHF radar and heating facility during low solar illumination. The were made August 2018 2020 around 20:02 UT. Heating was operated cycles intervals 48 s 168 off. More than half observed show a PMSE de...

Journal: :Chaos Solitons & Fractals 2023

To study controlled evolution of non-autonomous matter-wave solitons in spinor Bose-Einstein condensates with spatiotemporal modulation, we focus on a system three coupled Gross-Pitaevskii (GP) equations space-time-dependent external potentials and temporally modulated gain/loss distributions. An integrability condition non-isospectral Lax pair for the GP are obtained. Using it, derive an infin...

Journal: :Optical and Quantum Electronics 2021

We studied the optical signature of bipolaron and its effects on bandgap modulation in single-layer Transition Metal Dichalcogenides (TMDs) under magnetic field. Using Huybrecht method, we derived ground state energies modified zero Landau levels for all Fröhlich coupling constants. take into account both intrinsic longitudinal phonon modes surface induced by polar substrate. observed that high...

Journal: :IEEE Photonics Technology Letters 2021

We experimentally demonstrate a rate-adaptive concatenated forward error correction (FEC) scheme to minimize the information rate loss due varying channel conditions. The coding is based on inner soft-decision polar code and outer hard-decision staircase code. An experiment in wavelength-division multiplexed (WDM) system with different SNR per WDM performed by employing codes various coded modu...

Darbandi M Eskandari S Heidarkhani S Panahi KH Soleimani Rad H Soleimani Rad J, Torabi Oskoei G

Background: Morphology and presence of Polar body in the oocyte are denoting oocyte quality and is used as a criterion for prognosis of embryo quality. However, little is known about ICSI result of oocytes with two polar bodies. The present study reports the result of ICSI in a case having several oocytes with two polar bodies. Materials and Methods: A 34 years old patient (K.H.) with history o...

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