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In wireless sensor networks (WSNs), sensor nodes are usually powered by batteries of limited capacity, which results in dynamic changes of available paths for data aggregation due to node failures caused by energy depletion. For transmitting certain amount of data generated by source node, the overall transmission cost is affected by two major factors, using sequence of available paths and amount...
In wireless sensor networks (WSNs), the nodes are usually powered by batteries with limited capacities, which has become one of the main challenges to the wide deployment of WSN-based applications. The overall network lifetime, which is usually determined by the node with the shortest lifetime because of the unbalanced energy consumption, becomes a major issue. Aiming at this, we consider the optimization...
This paper deals with the design and implementation of an 8-bit, 1-Gsample/s folding-interpolating analog-to-digital converter using a conventional 0.5µm self-aligned, double polysilicon bipolar process with maximum unity gain cutoff frequency fTof 25GHz. The high-speed and high-resolution A/D converter has applications in direct IF sampling receivers for wideband communications systems. The converter...
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