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For ubiquitous wireless sensor networks, there are three main requirements. The devices must be extremely small, consume very little operating power, and capable of distributed signal processing to enable in situ processing of sensed data at leaf nodes of the network. This paper presents the design of an Asynchronous Digital Signal Processor (ASPEN) to realize these goals. Using Quasi-delay insensitive...
Extending the wireless sensor network's lifetime has been the aim of several research efforts. Distributed in-network processing arises as a viable solution to extend the network's lifetime. It avoids assigning heavy computations to a single node which might otherwise lead to its significant energy depletion. Task scheduling and allocation play a major role in the efficiency of the distribution. This...
In this work we are proposing a light-weight energy-aware distributed LU decomposition on energy-constrained wireless sensor networks (WSN). This work builds a complete scheme for the distribution; it involves an efficient block-based distribution of the LU decomposition, a simple energy-aware task mapping, a light-weight TDMA transmission schedule where each node can infer its transmission time slot...
Wireless sensor networks (WSNs) aim to fulfill the need for reliable and fault-tolerant sensing services. This has made wireless sensor networks a very active research area. SMAC is an energy efficient sensor MAC protocol. An S-MAC problem is that border nodes have to adopt multiple sleeping schedules, which speed up the energy depletion of border nodes. In this paper, S-MACL is proposed to overcome...
In the nano-scaled technologies, increasing sub-threshold leakage, dynamic power and degrading SNM pose major hurdle for future generation circuits, especially in SRAM arrays. In this paper, a novel high write speed, low power, read-SNM-free 6T SRAM cell is presented. Simulation using 128 times 16 SRAM array in 90 nm CMOS technology shows that the cell can achieve 64% faster write operation than the...
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