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In this paper, we firstly introduce the random geometric graph (RGG) as the model of wireless sensor networks (WSNs), and point out that the convergence rate of distributed synchronization algorithm in WSNs is depended on the second largest eigenvalue of the update matrix based on the network topology. Then we take three network structure entropies, which are degree distribution entropy, Wu entropy...
The study of the synchronization problems in wireless sensor networks (WSNs) is increasingly significant, researchers found that the topology of the network has an important impact on the convergence performance of the synchronization in WSNs. In this paper, we find that the WSNs can be described by RGGs, and the convergence rate of distributed synchronization algorithm depends on the second largest...
In this paper, a novel high-capacity grid-connected photovoltaic (PV) system based on Boost converter + dual-level four-leg inverter is proposed, which can perform both grid-connected system and active power filter (APF). Comparing with single-stage three-phase three-wire PV system, the proposed system not only allows a wide range of input voltage, but also can compensate unbalance loads current....
Comparing single-stage grid-connected photovoltaic (PV) system with power quality improvement, in this paper, a high-capacity three-phase four-wire grid-connected PV system based on Boost converter + dual-level four-leg inverter is proposed, which not only allows a wide range of input voltage, but also compensates unbalance current of the local load comparing three-phase three-wire PV system. This...
In this paper we investigate the achievable capacity of a UTRA-like Time Division Duplex (TDD) Code Division Multiple Access (CDMA) system employing Loosely Synchronized (LS) spreading codes. The family of operational CDMA systems is interference limited, suffering from Inter-Symbol-Interference (ISI), since the orthogonality of the spreading sequences is destroyed by the frequency selective channel...
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