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A high-performance current-mode, multi-input winner-take-all maximum circuit is introduced. Owing to low-impedance low-capacitance input nodes involved, the speed of the new circuit is higher than major counterparts. Simulation results show that the new circuit exhibits superior performance compared with well-known rival counterparts in terms of speed, area, dynamic range and power dissipation.
In this paper, we investigate applications of access control to Wireless Sensor Networks (WSNs). Although access control was well established for traditional computer systems, it has not been studied thoroughly in WSN environments. We briefly provide the WSN specifications and then stress the constraints of the WSNs that would affect the access control implementation. We also provide a literature...
In this paper, we propose a novel User Authentication (UA) scheme for heterogeneous Wireless Sensor Networks (WSNs), which employs both Public Key Cryptography (PKC) and Symmetric Key Cryptography (SKC) approaches, such that it takes advantage of both schemes. Our analysis results have shown that, our scheme is not only more secure and scalable than existing SKC based schemes, but also requires lesser...
Wireless technology has enabled the development of increasingly diverse applications and devices resulting in an exponential growth in usage and services. These advancements made the radio frequency spectrum a scarce resource, and consequently, its efficient use is of the ultimate importance. To cope with the growing demand, network design focused on increasing the spectral efficiency by making use...
The quick-start mechanism has been presented as a way for transport control protocols to efficiently use available bandwidth in under-utilized networks. Although studies of performance of quick-start have been carried out, its performance in low latency networks has not been well investigated. In this paper, we show that the benefits of quick-start in low latency networks are minimal. We also show...
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