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The internet of things (IoT) has a variety of application domains, including smart homes. This paper analyzes distinct IoT security and privacy features, including security requirements, threat models, and attacks from the smart home perspective. Further, this paper proposes an intelligent collaborative security management model to minimize security risk. The security challenges of the IoT for a smart...
In the large-scale Wireless Metropolitan Area Network (WMAN) consisting of many wireless Access Points (APs),choosing the appropriate position to place cloudlet is very important for reducing the user's access delay. For service provider, it isalways very costly to deployment cloudlets. How many cloudletsshould be placed in a WMAN and how much resource eachcloudlet should have is very important for...
Cyber-attackers are threatening the security of the Internet of Things (IoT) since the day it was born. This requires an integrated security management system (SMS) to protect the IoT. The security challenges of the IoT are investigated, and a comprehensive IoT SMS has been proposed.
In this paper, we proposed a multi-hop distributed energy-efficient clustering with sub-clustering (MHDEEC-SC) architecture. Our architecture selects a fitter node served as cluster head, and uses the concept of sub-clustering that chooses a node in remote areas with higher energy to serve as sub-cluster head. Besides, our architecture can balance the energy consumption between nodes and improves...
This paper presents a low-power and small-area VCO-based closed-loop ΔΣ ADC with two highlights. First, the ADC has a distributed modular architecture. It consists of repetitive slices, which simplifies both schematic and layout design. It allows the ADC to be easily reconfigured for other resolution specifications. Second, a novel digital DAC mismatch calibration technique is proposed. It has low...
This paper presents a low TX noise transmitter with digital modulated power amplifier (DPA) for UHF RFID reader System-on-Chip. With I/Q digital signals directly modulated on DPA, the transmitter eliminates the pulse shaping filter, up-conversion mixer and power amplifier driver, which are dominant noise contributors in a conventional RFID transmitter. A switch-mode power amplifier cell is adopted...
In this paper, we propose a novel algorithm which combines fuzzy logical control (FLC) and Taguchi method to select the optimal cluster heads from a wireless sensor network (WSN). In a WSN, FLC algorithm is used to select cluster head and to reach the energy consumption balance among all nodes, which can in turn decrease the probability of the early death of the nodes. In addition, the equation of...
The rapid revolution in microprocessor chip architecture due to multicore technology is presenting unprecedented challenges to the application developers as well as system software designers: how to best exploit the parallelism potential due to such multi-core architectures? In this paper, we report an in-depth study on such challenges based on our experience of optimizing the fast Fourier transform...
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