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As distinct SG applications have different communication requirements in terms of reliability, latency, bandwidth, and so on, it is obviously infeasible to rely on a single communication technology for SG communications. Therefore, a hybrid communication architecture integrating both low latency fiber optic and flexible wireless technologies should be a promising candidate, which gives rise to the...
A low cost push-pull converter based bi-directional inductive power transfer (BD-IPT) system suitable for wireless integration of electric vehicles (EVs) with the utility grid is presented. The proposed system has a number of advantages over traditional BD-IPT systems, due mainly to its inherent ability to maintain zero voltage switching (ZVS) operation over a wide range of operating conditions. The...
Effects of ground plane on the Specific absorption rate (SAR) in SAM head model exposed PIFA antenna is investigated in this paper. The dual-band PIFA working at 900M and 1800M is designed to operate with a ground plane, and the ground plane is an integral part of the antenna assembly. To investigate systematic biases on SAR in SAM head model resulting from shape effect of the ground, both the average...
This paper is based on wireless sensor network security evaluation model. First, start from the analysis of the current assessment model, then in the analysis of the structure wireless sensor networks, proposed the structure for the safety assessment. Then improve the lack of the AHP, and make the result as a preliminary calculation, constructing the fuzzy neural network model for safety assessment.
Wireless network access from moving vehicles can be challenged by many factors such as connection opportunities, mobility, handshake phase, and data sizes, etc. The handshake time and transmission rate can be influenced differently in vehicle-to-roadside networks than a static wireless LAN access. The radio signal strength changes and Doppler shift occur when the vehicle is moving. Switching among...
Different from the traditional wireless networks, in wireless sensor networks(WSNs), power consumption is a critical aspect, because current nodes are always supported by constrainedenergy battery. A particular challenge in maintaining extended battery lifetime lies in achieving communications with low power. For better understanding of the design trade offs of WSNs, a more accurate power consumption...
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