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Overhead and underground power line monitoring is an essential infrastructure for advanced operation in the smart grid. Wireless sensor networks are attractive to remote power line monitoring, due to their rare geography restrictions, simple engineering design, and flexible equipment expansion. Considering the ZigBee’s characteristic of low transmission rate, almost commercial sensors adopt the high-speed...
We experimentally compare OFDM and Single-carrier modulation in a large-capacity optical-wireless signal delivery system at W-band. We conclude that OFDM is more suitable in a scenario of relatively short wireless distance and limited receiver bandwidth.
In this paper, we propose a dual-path-based data aggregation scheme (DPBDAS) for grid-based wireless sensor networks (WSNs). We build a grid infrastructure by equally partitioning the whole sensor field into a grid of cells. The sensor nodes are randomly classified as type A and type B. All sensor nodes of type A and type B in the grid are further organized as group A and group B, respectively. Each...
Routing protocols based on gradient and cluster in wireless sensor network is analyzed. A concept of sensor node's potential is proposed. By adopting the technologies of building potential, clustering based on potential, the adjustive power routing of cluster head, a new potential-based routing protocol (PBRP) is designed. Simulation results show that the new routing protocol provides longer lifetime...
In order to reduce energy consumption, we first show ideal energy mathematical model of PEGASIS topology, since the distance between nodes is the same, this energy mathematical model is the longest network lifetime of WSNs. To achieve this objective, we have proposed IntraGrid PEGASIS topology architecture, which is an architecture based on PEGASIS topology; in this architecture, the sensor area is...
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