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For a grid-connected Voltage-Source Converter (VSC), dynamics of the grid synchronization plays an important role in affecting the converter performances and stability. Due to its significance, this paper gives a comparative analysis about some basic grid synchronization schemes, through viewpoint of dynamic performances, which appeared as the impacts of voltage perturbation on the estimated angle...
The emergence of synchronization in a network of coupled oscillators is a pervasive topic in various scientific disciplines ranging from biology, physics, and chemistry to social networks and engineering applications. A coupled oscillator network is characterized by a population of heterogeneous oscillators and a graph describing the interaction among the oscillators. These two ingredients give rise...
This paper focuses on the problem of global synchronization for impulsive coupled dynamical networks via pinning control. Controlling impulsive synchronization of the network by changing the differences between some chosen nodes and the reference signal step by step is the main idea discussed in this paper, regardless of whether there is a synchronized or desynchronized impulses for the dynamical...
This paper aims at the present difficulties to regulate the frequency difference and voltage difference automatically when doing power grid parallel operation in substation, and applies the back-to-back voltage source converter to the power grid synchronization parallel based on the theory of active power frequency and reactive power voltage in power system. The core of the power grid synchronization...
In this paper we consider an SC-FDE (Single Carrier Frequency-Domain Equalization) block transmission with residual frequency errors. We employ frequency-domain iterative DFE (Decision Feedback Equalization) receivers denoted by Iterative Block-Decision Frequency Equalization (IB-DFE), which are combined with a Decision-directed (DD) Carrier Frequency Offset (CFO) estimator. This estimator produces...
Collaborative communication produces high power gain and significantly reduction in bit error rate (BER) if both frequency and phase synchronization are achieved. In this paper a novel collaborative communication system with imperfect phase and frequency synchronization that includes the influence of noise is proposed, modeled, simulated and analyzed. Mathematical expressions are derived for the received...
In this paper, we propose a robust STBC transmission scheme to combat the timing synchronization errors over frequency-selective multiple-access channels. First, the equivalent channel model in the presence of timing synchronization errors is derived and we find that the synchronization errors result in an equivalent channel model with larger number of correlated channel taps. Based on this correlated...
We propose a more accurate method to analyze multilevel frequency-shift-keying frequency-hopping code-division multiple-access (MFSK/FH-CDMA) wireless communication systems using ldquoone-hitrdquo FH patterns, instead of random FH patterns. By also removing the over-optimistic symbol-synchronous assumption, the new method provides a more realistic performance analysis as the MFSK modulation may result...
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