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FPGA Based Wireless multi-node Transceiver and Monitoring System

Journal of Mathematics and System Science 2012年第1期2卷 53-57页

作者： Ozkan Akin ilker Basaran Radosveta Sokullu lrfan Alan Kemal Biiytikkabasakal Electrical ＆ Electronics Engineering Faculty Ege University Izmir 35100 Turkey Electrical ＆ Electronics Engineering Department Engineering Faculty Abdullah Gul University Kayseri 38039 Turkey

In recent years the variety and complexity of Wireless Sensor Network （WSN） applications, the nodes and the functions they are expected to perform have increased immensely. This poses the question of reducing the time from initial design of WSN applications to their implementation as a major research topic. RF communication programs for WSN nodes are generally written on microcontroller units （MCUs） for universal asynchronous receiver/transmitter （UART） data communication, however nowadays radio frequency （RF） designs based on field-programmable gate array （FPGA） have emerged as a very powerful alternative, due to their parallel data processing ability and software reconfigurability. In this paper, the authors present a prototype of a flexible multi-node transceiver and monitoring system. The prototype is designed for time-critical applications and can be also reconfigured for other applications like event tracking. The processing power of FPGA is combined with a simple communication protocol. The system consists of three major parts： wireless nodes, the FPGA and display used for visualization of data processing. The transmission protocol is based on preamble and synchronous data transmission, where the receiver adjusts the receiving baud rate in the range from min. 300 to max. 2400 bps. The most important contribution of this work is using the virtual PicoBlaze Soft-Core Processor for controlling the data transmission through the RF modules. The proposed system has been evaluated based on logic utilization, in terms of the number of slice flip flops, the number of 4 input LUTs （Look-Up Tables） and the number of bonded lOBs （Input Output Blocks）. The results for capacity usage are very promising as compared to other similar research.

关键词： FPGA PicoBlaze RF multi-node wireless transceiver

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A Study of multi-node and Dual-Hop Collaborative Communication Performance Based on Harmonic Mean Method

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Communications and Network 2009年第1期1卷 42-45页

作者： Tingting YANG Shufang ZHANG 不详

Closed form expressions for the PDF and MGF of the harmonic mean of two independent exponential variates are cited and derived, and then applied to study the performance of cellular multi-node and dual-hop cooperative communication systems with non-regenerative relays over flat Rayleigh fading channels. We derive the probability density function (PDF) and asymptotic symbol error rate (SER) expression with MRC scheme. Then we use Matlab to simulate the performance.

关键词： harmonic mean cooperative communication multi-node dual-hop MGF

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Vehicle Management System Based on multi-node RFID Cards

Vehicle Management System Based on Multi-node RFID Cards

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第三十届中国控制会议

作者： CHEN Xue-Mei~1,WEI Zhong-Hua~2 1.School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,P.R.China 2.Traffic Engineering Key Lab of Beijing,Beijing University of Technology,Beijing 100022,P.R.China

The radio frequency identification(RFID) technology is a kind of advanced automatic identification technology,and is more and more widely used in the fields of transportation and *** management system was established,which has Microsoft Visual Basic 6.0 as development platform and SQL Server 2000 database as its background *** functions have been realized in this management system,such as system personnel management,vehicles management,vehicle information management,and freights information registration and *** distribution of system personnel authority and the registration and inquiry of the in-and-out vehicles & cargo information have been achieved in this management system, thereby enhanced the efficiency of the current vehicles and security,and promoted a more effective flow of goods.

关键词： multi-node RFID cards Vehicle management Logistics Database

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Simulation of the Tree Algorthm in ATM Networks

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The Journal of China Universities of Posts and Telecommunications 2002年第1期9卷 24-29页

作者： WANG Lin zhu (Institute of Communication Engineer, Jilin University, Changchun 130012) Institute of Communication Engineer Jilin University Changchun 130012

This paper proposes an algorithm for multicast routing in ATMnetworks. We define the network cost of a routing as the combinationof the cost. If establishing connections, the cost of the overallbandwidth and overall switchings, our routing algorithm works on theoriginal topology of ATM networks with physical switches and physi-cal links, and different switching functionalities of VirtualPath(VP)switches and Virtual Channel(VC)switches in the network. Itgenerates an optimal multicast routing with the minimal overallnetwork cost. Simulations with MATLAB have been made to compare thequality of the routing generated by our algorithm with those of othertwo Major algorithms.

关键词： asynchyouons transfer mode(ATM) router trees(mathematics) multi-node

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