Results 11 to 20 of about 1,202 (266)
Tutorial on dynamic analysis of the Costas loop [PDF]
Annual Reviews in Control, 2016 Abstract Costas loop is a classical phase-locked loop (PLL) based circuit for carrier recovery and signal demodulation. The PLL is an automatic control system that adjusts the phase of a local signal to match the phase of the input reference signal. This tutorial is devoted to the dynamic analysis of the Costas loop.
N V Kuznetsov +2 more
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Research on Improved Costas Loop for High-order QAM [PDF]
Jisuanji gongcheng, 2017 In order to improve convergence speed and tracking stability for high-order Quadrature Amplitude Modulation(QAM) demodulation carrier recovery,a new kind of Costas loop is designed based on software radio thought and the basic principle of traditional ...
ZHOU Shengyuan,PAN Huilan
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A State-Space Framework for Parallelizing Digital Signal Processing in Coherent Optical Receivers [PDF]
SensorsUltra-high sampling rates in coherent optical front-ends increasingly exceed the processing capabilities of real-time baseband processors, creating a bottleneck in coherent free-space optical communication systems.
Jinyang Wang, Zhugang Wang, Di Liu
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Fast carrier recovery in FHSS systems with DDS based Costas loop [PDF]
Electronics, 2015 Owing to fast change of carrier frequency, the usage of coherent demodulation methods in Frequency-Hopping Spread Spectrum (FHSS) communication systems is limited by the coherent state acquisition performed by the local oscillator.
Slavko Šajić
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Modified Costas Loop for Carrier Phase Tracking in GPS Receivers [PDF]
RadioengineeringThe carrier phase received at the receivers of the Global Positioning System (GPS) links is used to detect navigation data and to precisely determine the position, speed and time corresponding to the user's equipment.
A. M. Pereira de Lucena +1 more
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IEEE Photonics Journal, 2015 The Costas loop is the key technique of synchronous demodulation in the next generation of satellite optical communication systems. To better understand the Costas loop, the relationship between phase deviation of the Costas loop and bit error rate (BER)
Mi Li +5 more
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Effective Lock Detectors Based on Costas Loop Output for SBPSK Mobile Communications
IEEE AccessIn this study, we address the problem of lock detection at the output of a Costas loop when robust modulations for bandwidth-constrained military communications are used.
D. Ferramola +4 more
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Lock-in range of BPSK Costas loop
IFAC-PapersOnLine, 2018 Abstract This work is devoted to nonlinear analysis of BPSK Costas loops and estimation of its key characteristics – the lock-in range. It is shown that obtained estimations refine some previously known engineering results.
Elena V Kudryashova +2 more
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Simulation of Analog Costas Loop Circuits [PDF]
International Journal of Automation and Computing, 2014 The analysis of stability and numerical simulation of Costas loop circuits for the high-frequency signals is a challenging task. The problem lies in the fact that it is necessary to observe very fast time scale of input signals and slow time scale of signal's phases simultaneously.
Roland E. Best +4 more
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Доклады Белорусского государственного университета информатики и радиоэлектроники, 2022 The goal of the work is to find a solution, realization, and modelling of the algorithm for the compensation of a start random phase error of a quadrature signal, which began at the input of the receiver’s digital part.
A. L. Matiouchkov, I. N. Zhuk
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