Results 21 to 30 of about 36,126 (160)

Multimode coordinated multipoint transmission with nonideal timing synchronization

open access: yesTongxin xuebao, 2016
Against the negative impact of non-ideal timing synchronization on the coordinated multipoint (CoMP) trans-mission, a multimode algorithm was proposed.
qi GUZhe, pei ZHANGZhong
doaj   +2 more sources

Two-time synchronism and induced synchronization

open access: yes, 2002
A pair (A,B) of interacting oscillators treated as a master system sending signals to its slave copy (a,b) through two communication channels A-->a and B-->b is considered. The effect of non-simultaneous (two-time) synchronization of the pairs (a,A) and (b,B) is demonstrated with the help of coupled Kerr oscillators producing hyperchaos.
Szlachetka, P., Grygiel, K., Misiak, M.
openaire   +2 more sources

A timing estimation algorithm for dPMR receiver based on FPGA and its implementation

open access: yesDianzi Jishu Yingyong, 2019
The accuracy of symbol timing synchronization has a great impact on the demodulation performance of digital communication systems. The dPMR communication system requires the symbol synchronization of the receiver to have fast acquisition and good ...
Zhu Ziwen, Zhang Tao, Guan Hanxing
doaj   +1 more source

A Time-Robust Digital Self-Interference Cancellation in Full-Duplex Radios: Receiver Design and Performance Analysis

open access: yesIEEE Access, 2020
In full-duplex radios, precise time synchronization between the received and reconstructed self-interference (SI) is the basis of the effective SI cancellation (SIC).
Yimin He   +4 more
doaj   +1 more source

Synchronization: Stability and duration time [PDF]

open access: yesPhysical Review E, 2002
We consider the problem of stability and duration of the synchronization process between self-excited oscillators, both in their regular and chaotic states. Making use of the properties of Hill equation describing the deviation between the slave and the master, we derive the stability conditions and expressions of the synchronization time.
Woafo, Paul, Kraenkel, Roberto A.
openaire   +3 more sources

Research of Timing Synchronization of Mine Through-the-Earth Communication System

open access: yesGong-kuang zidonghua, 2012
The paper researched timing synchronization of mine through-the-earth communication system. It built a simple elastic wave medium model of earth channel firstly and obtained multi-path delay of the model is 20 ms through calculation.
GUO Yin-jing, LI Chun-qiu, FANG Lu-tao
doaj  

Optical–Optical Synchronization Between Two Independent Femtosecond Yb-Fiber Lasers With 10 –20 Instability in 105 s

open access: yesIEEE Photonics Journal, 2017
Optical–optical synchronization between independent mode-locked lasers with attosecond timing precision is essential for arbitrary electric-field waveform generation, subcycle optical pulse synthesis, optical frequency transfer as well as next ...
Haochen Tian   +4 more
doaj   +1 more source

Synchronizing Time Distribution

open access: yesJournal of Al-Qadisiyah for Computer Science and Mathematics, 2023
With the wide span of internet brought great progress in different parts of human life, a digital documents have been employed as a media in exchange information between internet parties like text, audio, pictures and videos that leads to the issue of how to certify the document when created or modified in order to use it as secure digital media for ...
openaire   +1 more source

A high‐precision timing and frequency synchronization algorithm for multi‐h CPM signals

open access: yesIET Communications
In the context of certain specific digital communication systems, where there are limitations such as spectral resources and energy availability, continuous phase modulation (CPM) emerges as an appealing choice among various modulation methods. Among CPM
Yukai Liu   +3 more
doaj   +1 more source

Large-scale timing synchronization based on linear-optics timing detectors

open access: yesHigh Power Laser Science and Engineering
We presented an attosecond-precision timing detector based on linear optics. The minimum measurement floor is 1×10–10 fs2/Hz with only 1 mW input optical power.
Tong Wang   +9 more
doaj   +1 more source

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