Results 1 to 10 of about 1,859,997 (304)
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
doaj +2 more sources
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
doaj +3 more sources
Perancangan dan Realisasi Perangkat Keras Demodulator BPSK dengan Costas Loop
Techne, 2015 Pada tulisan ini akan dirancang dan direalisasikan suatu perangkat demodulator data berbasis BPSK (Binary Phase Shift Keying) menggunakan metode Costas Loop.
Budihardja Murtianta +2 more
doaj +4 more sources
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
exaly +2 more sources
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
openaire +3 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
Design and Simulation of Digital PLL Synchronizer for BPSK and QPSK Based on Software Defined Radio [PDF]
Engineering and Technology Journal, 2009 This paper presents a design and simulation of digital PLL synchronizer, usingCostas loop based on SDR for high frequency communication systems. Designparameters are selected for each unit of the proposed systems in order toaccommodate SDR requirements ...
H. T. Ziboon, A. A. Thabit
doaj +1 more source
IET Optoelectronics, 2023 The technical feasibility of developing an Internet of Things multi‐user communication system is evaluated based on a central digital multiband carrierless amplitude and phase transmitter, which broadcasts data on multiple channels for a number of low ...
Luís Rodrigues +3 more
doaj +1 more source