Results 41 to 50 of about 1,345 (198)
Hitless Rate Switching for Dynamically Reconfigurable Optical Systems
IEEE Photonics Journal, 2015 We propose a set of techniques to enable hitless rate switching for reconfigurable optical systems and validate, by computer simulations, their applicability to NRZ, RZ, and Nyquist pulse shapes. The polarization-multiplexed quadrature phase-shift keying
Valery N. Rozental, Darli A. A. Mello
doaj +1 more source
Variable‐length balanced codes for quadrature phase shift keyed systems
The Journal of Engineering, 2015 The authors outline an approach to construct capacity‐approaching balanced quadrature phase shift keyed (QPSK) codes. These codes ensure an equal number of different symbol values and many symbol transitions in the encoded sequence in order to assist practical demodulators to accurately recover symbol values.
Xin Tu, Ivan J. Fair
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Current‐Limiting Control Strategies in Variable Capacitance Electrostatic Energy Harvesters
Advanced Intelligent Systems, EarlyView.This work introduces control strategies for electrostatic energy harvesters that balance energy yield with current limitations. Two approaches are explored: traditional peak‐triggered controls, and newly developed quadrature controls, which use smooth voltage profiles.
Alireza Jalaliankhakshour +4 more
wiley +1 more source
Известия высших учебных заведений России: Радиоэлектроника, 2015 Receiving of the broadband phase modulated signal with quadrature phase-shift keying in case of multiple access in-terference and internal Gaussian noise has been considered.
G. S. Nakhmanson, S. V. Kozlov
doaj
Direct quadrature phase shift keying modulator using six-port technology
Electronics Letters, 2005 A direct quadrature phase shift keying modulator based on six-port technology is presented. The modulator comprises a six-port circuit, a switch matrix and open and short terminations. Using this modulator, direct phase shift keying modulation was achieved.
Y. Zhao +4 more
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Energy Technology, EarlyView.Advanced virtual impedance control integrating multiple second‐order generalized integrator (SOGI) variants—SOGI, ESOGI, MSOGI, and DSOGI—enhances power and harmonic sharing accuracy in islanded microgrids. The comparative study quantifies performance–complexity trade‐offs, demonstrating up to 65% total harmonic distortion (THD) reduction and improved ...
Camelia Ait Hammouda +3 more
wiley +1 more source
Digital Rights Activism in Multilevel Governance
European Policy Analysis, EarlyView.ABSTRACT Multilevel governance (MLG) without a clear hierarchical structure can create power imbalances among various actors, particularly in settings with overlapping jurisdictions and policy areas. This dynamic is especially pronounced in Internet governance, which faces a complex interplay of domestic laws, state interdependence, and heightened ...
Alison Harcourt
wiley +1 more source
Analysis of a Novel Brushless Doubly Fed Reluctance Generator Based Wind Energy Conversion System
Energy Science &Engineering, EarlyView.BDFRG based grid connected wind energy conversion system. ABSTRACT This paper presents a grid connected Brushless Doubly‐Fed Reluctance Generator (BDFRG) based wind energy conversion system. It offers a reliable and cost‐effective solution since its brushless and cage‐less rotor structure eliminates the need for slip rings, reducing maintenance costs ...
Subir Datta +6 more
wiley +1 more source
Quadrature phase shift keying coherent state discrimination via a hybrid receiver
New Journal of Physics, 2012 We propose and experimentally demonstrate a near-optimal discrimination scheme for the quadrature phase shift keying (QPSK) protocol. We show in theory that the performance of our hybrid scheme is superior to the standard scheme—heterodyne detection—for ...
C R Müller +6 more
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Sensors, 2020 The spacecraft tracking telemetering and command (TT&C) system plays an essential role in celestial and terrestrial networks, requiring relative ranging and communication, particularly in satellite formation flying networks and distributed spacecraft ...
Na Zhao +3 more
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