Connectivity Based k-Hop Clustering in Wireless Networks

In this paper we describe several new clustering algorithms for nodes in a mobile ad hoc network. The main contribution is to generalize the cluster definition and formation algorithm so that a cluster contains all nodes that are at distance at most k hops from the clusterhead. We also describe algorithms for modifying cluster structure in the presence of topological changes. We also proposed an unified framework for most existing and new clustering algorithm where a properly defined weight at each node is the only difference in otherwise the same algorithm. This paper studied node connectivity and node ID as two particular weights, for k=1 and k=2. Finally, we propose a framework for generating random unit graphs with obstacles.     

自制电脑型电视播音提词器

详细介绍利用淘汰电脑和中文阅读软件ReadBook制作一台电脑型电视播音提词器 ,花钱不多但很实用     

用于数字音频广播接收机的全码率维特比译码集成电路

卷积编码维特比译码集成电路是数字音频广播接收机信道译码的关键部件．本文介绍了一种维特比译码集成电路的设计，该电路符合欧洲数字音频广播信道译码的标准要求，可对数字声音卷积编码的全部码率（8／9，…，1／2，…，1／3，…，1／4）进行译码，最高译码输出码率大于2048kbps，集成电路采用瑞典爱立信公司的P540．6μmCMOS工艺设计和制造，核心面积为10mm2，芯片总面积为25mm2，等效逻辑门数为27，000门测试结果表明芯片满足所有设计要求．目前已用于我们开发的数字音频广播接收机中．     

乌鲁木齐有线电视网络综合业务管理平台

主要阐述了乌鲁木齐广电网络公司建立广电综合业务平台的一些经验以及系统功能，从多个角度解释了广电综合业务管理平台的组成，以及各个组成部分之间的业务集成、流程关系、系统特色。该系统主要侧重于广电网络系统平台，以平台为基础，可以构建非常强大的业务应用流程，比如办公自动化、数据收费等，该系统可作为广电同行建立类似系统时的参考。     

ZBP: A Zone-Based Broadcasting Protocol for Wireless Sensor Networks

Wireless Sensor Networks (WSNs) have been widely used in motoring and collecting interests of environment information. Packet flooding or broadcasting is an essential function for establishing a communication path from sink node to a region of sensor nodes. However, flooding operation consumes power and bandwidth resources and raises the packet collision and contention problems, which reduce the success rate of packet transmissions and consume energy. This article proposes an efficient broadcasting protocol to reduce the number of sensor nodes that forward the query request, hence improves the packet delivery rate and saves bandwidth and power consumptions. Sensor node that received the query request will dynamically transfers the coordinate system according to the zone-ID of source node and determines whether it would forward the request or not in a distributed manner. Compared with the CBM and traditional flooding operation, experimental results show that the proposed zone-based broadcasting protocol decreases the bandwidth and power consumptions, reduces the packet collisions, and achieves high success rate of packet broadcasting.Chih-Yung Chang received the Ph.D. degree in Computer Science and Information Engineering from National Central University, Taiwan, in 1995. He joined the faculty of the Department of Computer and Information Science at Aletheia University, Taiwan, as an Assistant Professor in 1997. He was the Chair of the Department of Computer and Information Science, Aletheia University, from August 2000 to July 2002. He is currently an Associate Professor of Department of Computer Science and Information Engineering at Tamkang University, Taiwan. Dr. Chang served as an Associate Guest Editor of Journal of Internet Technology (JIT), Special Issue on “Wireless Ad Hoc and Sensor Networks” (2004) and a member of Editorial Board of Tamsui Oxford Journal of Mathematical Sciences (2001–2005). He was an Area Chair of IEEE AINA′2005, Vice Chair of IEEE WisCom2005, Track Chair (Learning Technology in Education Track) of IEEE ITRE′2005, Program Co-Chair of MNSA′2005, Workshop Co-Chair of INA′2005, MSEAT′2003, MSEAT′2004, Publication Chair of MSEAT′2005, and the Program Committee Member of ICPP′2004, USW′2005, WASN′2005, and the 11th Mobile Computing Workshop. Dr. Chang is a member of the IEEE Computer Society and IEICE society. His current research interests include wireless sensor networks, mobile learning, Bluetooth radio systems, Ad Hoc wireless networks, and mobile computing.Kuei-Ping Shih received the B.S. degree in Mathematics from Fu-Jen Catholic University, Taiwan, Republic of China, in June 1991 and the Ph.D. degree in Computer Science and Information Engineering from National Central University, Taiwan, Republic of China, in June 1998. After two years of military obligation, he joined the faculty of the Department of Computer Science and Information Engineering, Tamkang University, Taiwan, Republic of China, as an assistant professor in 2000. Dr. Shih served as a Program Area Chair in the IEEE International Conference on Advanced Information Networking and Applications (AINA), 2005, and as a Technical Track Chair in the IEEE International Conference on Information Technology: Research and Education (ITRE), 2005. Dr. Shih’s current research interests include wireless networks, sensor networks, mobile computing, and network protocols design.Dr. Shih is a member of the IEEE Computer and Communication Societies and Phi Tau Phi Scholastic Honor Society.Shih-Chieh Lee received the B.S. degree in Computer Science and Information Engineering from Tamkang University, Taiwan, in 1997. Since 2003 he has been a Ph.D. Students in Department of Computer Science and Information Engineering, Tamkang University. His research interests are wireless sensor networks, Ad Hoc wireless networks, and mobile/wireless computing.     

USB广播播放控制系统设计

USB广播播放控制系统采用“一线通”设计方案,整个外部设备与主控计算机只有一根USB线相联,简化了结构,提高了可靠性。详细介绍了系统的硬件电路的设计和软件模块的编程,包括接口与主控电路、数模模数转换电路、调频电路的设计以及USB固件程序、USB驱动程序、播放控制窗口程序的编制。该系统功能强大,性价比较高,在各类学校及企事业单位等小型广播站具有广阔的市场前景。     

便携式语音环境参数测试仪设计

利用16位凌阳语音单片机、R450热电阻、HS1101湿度传感器、光敏电阻和TGS2610气体传感器等设计一款便携式环境参数测试仪,可实时测量温度、湿度、光强、有害气体浓度（包括煤气、香烟、酒精）等环境参数,具有红外遥控、液晶显示、语音播报及实时提醒等功能。     

信息通信网络解聚融合与下一代有线广播网

支撑有线电视网络向多业务发展的下一代广播网（NGB）是目前研究的重点,其中承载网络IP化、综合业务平台、端到端网络构架以及综合运营支撑系统等是目前研究的重点课题。从信息通信网络解聚融合的发展历程分析入手,给出了一种有线NGB体系参考模型,该模型通过去耦合组成多业务系统的各种网络资源和IT资源,实现资源重用和系统的可扩展性,除了网络功能组件以外,该模型同样适用于基于地面广播和卫星的NGB系统。     

Longstaff利率下巨灾债券定价的一种FFT方法——基于广东省1989~2015台风数据的实证分析

传统的保险市场难以满足日益频发的巨灾风险分散需求,巨灾债券作为一种非传统金融创新工具提供了一种新的分散机制,而精准定价则对巨灾债券的成功发行与交易起着关键作用。本文基于风险中性测度技术,在Longstaff随机利率且巨灾风险累积损失服从复合泊松损失条件下,得到了零息票巨灾债券价格公式;进一步结合广东省1989~2015年台风风暴潮灾害损失数据进行实证分析;最后,针对定价公式复杂性,本文利用快速傅里叶变换方法进行数值求解,结果验证了本文所构模型的可行性。本文的研究是希望能为我国发行巨灾债券与风险测度提供一定的理论基础与技术支持。     

多工调频广播的探讨及其发射系统的数字化实现方案

多工调频广播在保持原调频广播射频带宽不变的情况下,插入多种业务信息,具有投入小、见效快的特点,近年来在无线数据传输等领域应用广泛。在介绍多工调频广播的基本原理、基带频谱结构和各种技术指标的基础上,提出了一个基于DDS和DSP技术实现其发射系统的全数字化方案。