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This paper proposes a novel 150-GHz single-pole-double-throw (SPDT) switch based on a rat-race coupler topology. It is designed with a 0.13-μm SiGe BiCMOS and occupies a chip area of 507 μm×542 μm. The switch achieves insertion loss of 4.0 dB/3.3 dB, isolation of 36.3 dB/35.9 dB, input return loss of 18.7 dB/12.3 dB, output return loss of 21.7 dB/26.1 dB and power-handling capabilities of 22.2 dBm/15...
Big-Data applications need to shuffle their data over a network in a very large amount. The ability to efficiently allocate network resources to quickly finish the shuffle greatly affects the overall processing speed of Big-Data applications. The recent emergence of software-defined networking (SDN) technology makes it easier for the network to integrate with a Big-Data application. The network can...
Time-critical Location Based Service (LBS) applications in mobile ad hoc networks require fast localization. The conventional localization techniques are, unfortunately, unsuitable for such applications, for they neglect the time needed for localization. As a result, time-critical information may become obsolete, and the mobile users such as vehicles may have moved to new locations before the localization...
In this paper we present S-Net, a coordination language based on dataflow principles, intended for design of concurrent software. The language is introduced and then used for programming a concurrent solver for a combinatorial optimisation problem. We present the analysis and tracing facilities of our S-Netruntime system and show how these aid programmers in optimising the performance of their applications.
The decentralized distributed system characteristics of ad hoc networks bring up some security problems. To ensure the safe, efficient and flexible data transmission in ad hoc networks, this paper presents a trust routing framework based on topology control theory. This framework establishes a trust topology layer independent of routing layer, and the routing procedure executes over the trust topology...
In this paper, we present a dynamic navigation algorithm (DNA) that can be combined with GPS receivers, digital maps, and wireless technologies such as DSRC, 802.11p, and WiMAX. By calculating the score, a weighted sum of average vehicle speed, average inter-vehicle distance, road type, and road gain, for each candidate road, the DNA can generate a road score table and choose the road with the highest...
The routing protocol of structured peer-to-peer overlay networks influences the p2p network performances in route table maintenance, routing hops, and network churning. Current protocols we used usually maintain a O(logN) route table and O(logN) routing hops. To get better routing speed with less scale routing table, using O(1) node finger to get O(N) route path, a new protocol named CSSP was presented...
This paper presents a general weak nonlinearity model that can be used to model, analyze and describe the distortion behavior of various low noise amplifier topologies in both narrowband and wideband applications. Represented by compact closed-form expressions our model can be easily utilized by both circuit designers and LNA design automation algorithms. Simulations for three LNA topologies at different...
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