数字录音机及其新进展

本文分析了现代数字录音机的特点，介绍了各种格式的数字录音机，指出了数字录音机的新进展及发展趋势。     

蜂房式无线数据网及其应用

本文对无线数据网的体系和蜂房式无线数据网络系统的构成作了简要的分析，指出了蜂房式无线数据网络的主要关键性技术、特点及应用领域。     

一种新型的X.25网络—分组无线数据网络

本文介绍了一种新型的Ｘ．２５网络－分组无线数据网，并介绍了其构成方式及应用范围。     

Optimisation of sensing time and transmission time in cognitive radio-based smart grid networks

Cognitive radio (CR)-based smart grid (SG) networks have been widely recognised as emerging communication paradigms in power grids. However, a sufficient spectrum resource and reliability are two major challenges for real-time applications in CR-based SG networks. In this article, we study the traffic data collection problem. Based on the two-stage power pricing model, the power price is associated with the efficient received traffic data in a metre data management system (MDMS). In order to minimise the system power price, a wideband hybrid access strategy is proposed and analysed, to share the spectrum between the SG nodes and CR networks. The sensing time and transmission time are jointly optimised, while both the interference to primary users and the spectrum opportunity loss of secondary users are considered. Two algorithms are proposed to solve the joint optimisation problem. Simulation results show that the proposed joint optimisation algorithms outperform the fixed parameters (sensing time and transmission time) algorithms, and the power cost is reduced efficiently.     

Research of proactive complex event processing method

Based on the preliminary analysis results of the indeterminate event stream that generated by the sensors and control purpose equipment of CPS,the adaptive dynamic Bayesian network and parallel Markov decision process model were used to support the proactive complex event processing.In order to resolve the vast state space issue of Markov decision process for large CPS,states partition and reward decomposition methods were proposed to parallel the decision making process.The experimental result based on the simulation of traffic network shows that proposed method can process event stream effectively and has favorable scalability.     

GSM中的HSCSD技术

介绍了GSMHSCSD技术,及其与GSMphase2数据业务的异同。HSCSD作为从2G系统向3G系统演进的一种过渡方案,能灵活提供高速、多速率数据业务,具有较好的发展前景。     

多传感器数据融合发展评述及展望

结合近年来国内外的研究成果,回顾数据融合研究的发展历程,介绍了多传感器数据融合的概念和模型,探讨了数据融合的多层式体系结构,对数据融合理论的发展和研究现状进行了分析,对未来研究方向进行了展望。     

基于内存映射文件的进程间数据传输

介绍了Windows操作系统的内存管理方式及Windows操作系统中进程间通信的几种方式,论述了内存映射文件的定义,以及使用内存映射文件在进程间共享内存的原理、操作和使用内存映射文件的方法和步骤。根据内存映射文件在进程间共享数据的原理,实现了多进程间数据传输共享的消息队列,并应用于工程实践中,取得了较好的效果。     

面向Torque游戏引擎的网络数据传输优化方法研究

Torque游戏引擎是目前非常流行的跨平台游戏引擎,广泛用于包括智能终端在内的游戏开发。分析了TGE引擎的总体架构,深入剖析了其网络核心模块的设计理念和实现模型,详细讨论了基于TGE引擎的任务下载流程。针对因TGE引擎内部同时维护的客户和服务器端而导致的任务下载流程复杂、游戏资源加载时间长的问题,从下载流程脚本和引擎实现两个角度给出一套完整的任务数据传输优化方案。实验结果表明,该网络数据传输优化方案能够有效地提高TGE引擎的客户端任务场景下载速度。     

在VC下利用Windows API进行异步串口通信软件的开发

串口是常用的计算机与外部串行设备之间的数据传输通道。为了提高串口通信的速度和资源利用率,软件采用Windows API函数并基于多线程技术和异步串口通信的设计理念,实现了温控器与上位机之间的数据交换,并且将采集到的数据保存到Excel中,便于分析和处理。