Efficient multi-hop scheduling algorithms for packet transmissions in WDM optical star networks

This paper proposes multi-hop scheduling algorithms for the All-to-All Broadcast (AAB) problem in Wavelength Division Multiplexed (WDM) optical star networks. The multi-hop AAB problem can be split into two subproblems: Logical Topologies Construction (LTC) problem, and Transmission Scheduling (TS) problem. For improving the efficiency of multi-hop scheduling, we focus on a new multi-hop transmission model and transfer the LTC problem to a special case of the Round Robin Tournament (RRT) problem. In the proposed logical topologies, our multi-hop scheduling algorithms can easily overlap the tuning latency and reduce the number of tuning operations on each node. We compare our results with previous research in terms of schedule length. Overall results indicate that our multi-hop scheduling algorithms have better performance than previous algorithms.     

高清电视转播系统构建与方案设计

通过对10＋1讯道高清电视转播车车体布局与功能介绍,全面阐述了移动高清电视转播系统的设计原则、系统构建、功能设置及在方案设计中的关键技术问题。     

播出系统中KII与PVS两代硬盘服务器的混合使用

目前Profile硬盘服务器的用户存在的现实问题是,在对系统进行升级改造时,在PDF和PVS系列硬盘服务器已经停产情况下,如何使KII系列与PDF或PVS系列安全高效地混合使用,温州市广播电视总台在这方面成功地解决了这个问题,通过近一年的使用,达到了预期的效果。简述KII与PVS在播出系统中的混用,希望能给Profile用户提供一些有益经验。     

在广电工程中实施项目管理系统

项目管理是一套行之有效的工程管理方法。针对传统广电工程管理的不足,利用JAVA＋MYSQL技术,开发一套适合广电工程的项目管理系统,结合原有办公管理系统,有效利用互联网,实现管理系统的网络化,从而实现对工程的实时监控和有效管理。     

广播电视同步支撑网系统的研究

同步支撑网伴随着现代电信和广播电视网的快速发展而诞生,在网络中发挥越来越重要的作用,专为广播电视数字化而开发的同步支撑网将时钟同步和节目同步紧密集成,大大提高了该系统的可靠性和可管理性。     

县级全台网系统平台的建设

介绍铜山电视台全台网管理系统平台的设计、建设、运行情况,对已经建成的新闻文稿系统、非编制作系统、硬盘播出系统、媒资管理系统和收录系统从结构设计到硬件配置等进行阐述。     

PUF‐based solutions for secure communications in Advanced Metering Infrastructure (AMI)

Advanced metering infrastructure (AMI) provides 2‐way communications between the utility and the smart meters. Developing authenticated key exchange (AKE) and broadcast authentication (BA) protocols is essential to provide secure communications in AMI. The security of all existing cryptographic protocols is based on the assumption that secret information is stored in the nonvolatile memories. In the AMI, the attackers can obtain some or all of the stored secret information from memories by a great variety of inexpensive and fast side‐channel attacks. Thus, all existing AKE and BA protocols are no longer secure. In this paper, we investigate how to develop secure AKE and BA protocols in the presence of memory attacks. As a solution, we propose to embed a physical unclonable function (PUF) in each party, which generates the secret values as required without the need to store them. By combining PUFs and 2 well‐known and secure protocols, we propose PUF‐based AKE and BA protocols. We show that our proposed protocols are memory leakage resilient. In addition, we prove their security in the standard model. Performance analysis of both protocols shows their efficiency for AMI applications. The proposed protocols can be easily implemented.     

基于SDH网络的电视新闻回传系统建设

介绍目前杭州区县新闻回传的传输机制。对采用编解码技术、FTP技术、IP技术、远程传输技术构建基于SDH传输网络的区县电视新闻回传系统的技术方案进行比较,希望探索出新闻回传系统的最佳传输方案,以适应电视台高效快捷地制作区县新闻和区县节目现场直播的需要。     

基于DC-net的会议室电子选举方案

提出了一种新的适用于小规模选举活动的电子选举方案,其最大特点是能够提供无条件的完美选票秘密性保障。方案具有自计票功能,能够实现公平性和可验证性。敌手对选举结果的破坏等同于解离散对数问题。该方案建立在DC-net匿名广播协议基础之上,其安全性不依赖于任何信任中心,但需假定任意投票者之间存在秘密信道。     

基于并行处理的一种新型有效的网络架构 BSN-MOT

摘 要：结合BSN及MOT架构的双重优势,提出一种新型的双层架构体系BSN-MOT(mesh of tree),并研究了其上的拓扑性质及在并行处理中应用的基本的通信操作算法。算法包括行、列树广播、单向广播、数据求和、矩阵乘积、最短路径路由及多项式求根。最后,本文通过与其他2种有效的树形双层网络架构Multi-Mesh of trees(MMT)及OMULT比较说明,基于BSN-MOT架构的通信算法要比其他2种网络有着更小些的时间复杂度,且BSN-MOT是一种更具有竞争力的体系结构形式。