Results 1 to 10 of about 222,243 (118)

On the Effect of Imperfect Reference Signal Phase Recovery on Performance of PSK System Influenced by TWDP Fading

open access: yesEntropy, 2023
We examine the effects of imperfect phase estimation of a reference signal on the bit error rate and mutual information over a communication channel influenced by fading and thermal noise.
Goran T. Djordjevic   +4 more
doaj   +3 more sources

Security bound of continuous-variable measurement-device-independent quantum key distribution with imperfect phase reference calibration [PDF]

open access: yesPhysical Review A, 2019
Phase reference calibration is a necessary procedure in practical continuous-variable measurement-device-independent quantum key distribution (CV-MDI-QKD) for the need of Bell-State Measurement (BSM). However, the phase reference calibration may become imperfect in practical applications.
Hong-Xin Ma   +6 more
openaire   +4 more sources

Effects of Imperfect Reference Signal Recovery on Performance of SC and SSC Receivers over Generalized Fading Channels [PDF]

open access: yesRadioengineering, 2011
This paper presents the study of the effects of imperfect reference signal recovery on the bit error rate (BER) performance of dual-branch switch-and-stay combining (SSC) and multibranch selection combining (SC) receivers in a generalized - fading ...
N. D. Milosevic   +2 more
doaj   +2 more sources

Performance of qpsk system in the presence of pulse interference and noisy carrier reference signal [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2003
The aim of this paper is the determining the system performance in detecting the QPSK signal. The error probability is determined when the signal, Gaussian noise, pulse interference and imperfect carrier phase recovery are taken into consideration. Phase
Stefanović Mihajlo   +2 more
doaj   +1 more source

Machine Learning-Assisted Measurement Device-Independent Quantum Key Distribution on Reference Frame Calibration

open access: yesEntropy, 2021
In most of the realistic measurement device-independent quantum key distribution (MDI-QKD) systems, efficient, real-time feedback controls are required to maintain system stability when facing disturbance from either external environment or imperfect ...
Sihao Zhang   +5 more
doaj   +1 more source

Compensation for In-Phase/Quadrature Phase Mismatch in Coherent Free-Space Optical QPSK Communication Systems

open access: yesApplied Sciences, 2021
The Gram–Schmidt orthogonalization procedure (GSOP) and Löwdin symmetric orthogonalization procedure (SYOP) are the two mainstream algorithms for the compensation of phase mismatch in an imperfect optical 90° hybrid.
Xueliang Li   +4 more
doaj   +1 more source

A Straightness Error Compensation System for Topography Measurement Based on Thin Film Interferometry

open access: yesPhotonics, 2021
Straightness error compensation is a critical process for high-accuracy topography measurement. In this paper, a straightness measurement system was presented based on the principle of fringe interferometry. This system consisted of a moving optical flat
Hang Su   +4 more
doaj   +1 more source

Error-bound formulation for multichannel reception of M-DPSK and pilot-aided M-PSK over Rayleigh-fading channels with postdetection combining [PDF]

open access: yes, 2004
Upper bounds for symbol-error probability are developed for multichannel reception of M-ary phase-shift keying (M-PSK) over frequency-flat Rayleigh-fading channels.
Chow, YC, McGeehan, JP
core   +2 more sources

Grid integrated solar energy transfer system with a two‐layer complex coefficient filter‐based control

open access: yesIET Power Electronics, 2022
In this paper, a novel control strategy for grid‐integrated solar energy transfer system (SETS) is proposed which enhances the grid power quality along with active power injection.
Renuka Varma P C   +3 more
doaj   +1 more source

Performance of a two-link CPSK system incorporating direct phase regenerator with imperfect phase references

open access: yesElectronics Letters, 1984
The letter analyses the performance of a two-link binary coherent phase-shift-keying (CPSK) communication system incorporating a direct phase regenerator (DPR) with imperfect carrier reference signals in the regenerator and the receiver. These references are extracted from the received signals by means of squaring loops.
S. Salameh, A.G. Chapman
openaire   +1 more source

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