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A low-noise amplifier is the first active stage of a CMOS RF receiver. The inductively degenerated common-source LNA (CS-LNA) topology is currently popular because it achieves high gain, low noise figure, etc. The amplifier's performance is reviewed and the optimum Q value that gives the minimum noise figure is derived. It is then compared to the(More)
The resource efficiency and dependability of a trust system are the most fundamental requirements for any wireless sensor network (WSN). However, existing trust systems developed for WSNs are incapable of satisfying these requirements because of their high overhead and low dependability. In this work, we proposed a lightweight and dependable trust system(More)
A fully-integrated common-gate UWB LNA employs a stagger-compensated series peaking technique to extend bandwidth, and a capacitor cross-coupled g<sub>m</sub>-boosting technique to reduce NF and power. A simple input matching scheme obviates the use of multiple inductors and complex filters. For two versions in 0.18 mum CMOS, BW extension factors are(More)
Keywords: Large-scale P2P computing Trust model Trust factor WMA–OWA combination algorithms a b s t r a c t In large-scale peer-to-peer (P2P) computing, trust management technology has become a key requirement for network security. However, trust is one of the most complex concepts in network communities.worthiness has multi-dimensional properties. In this(More)
In Peer-to-Peer (P2P) trust management, feedback provides an efficient and effective way to build a reputation-based trust relationship among peers. There is no doubt that the scalability of a feedback aggregating overlay is the most fundamental requirement for large-scale P2P computing. However, most previous works either paid little attention to the(More)
The key to the success of a P2P reputation system is the feedbacks aggre-gating mechanism. Based on human cognitive psychology, Tree-Trust, a novel reputation model is introduced, in which the concept of direct trust tree (DTT) is presented innovatively. The main contributions include: (1) in Tree-Trust, feedbacks are searched by using DTT instead of in(More)
This paper proposes a service operator-aware trust scheme (SOTS) for resource matchmaking across multiple clouds. Through analyzing the built-in relationship between the users, the broker, and the service resources, this paper proposes a middleware framework of trust management that can effectively reduces user burden and improve system dependability. Based(More)