超宽带脉冲无线传输

超宽带无线技术包括基带脉冲传输方式和带通载波调制传输方式两大类。脉冲传输是把信息调制在离散脉冲信号上发射,带通载波调制传输是把信息调制在正弦载波上发射。超宽带无线系统主要采用基带脉冲传输技术,具有高空间频谱效率、高测距精度、低功耗、低成本、小体积等诸多优点和潜力。     

PC与单片机之间串行通讯的可视化编程的实现

文中主要介绍Visual Basic在实现PC与单片机89C51之间串行通讯中的应用。     

用Java实现流式Socket通信

基于Java的多线程机制和流式Socket的网络编程是设计并行网络通信程序的一种有效方法,文中介绍了Socket的通信机制,详细分析了Java语言中的Socket编程的步骤和方法,最后用Java实现了流式Socket通信.     

丰田汽车多路传输通讯系统的检修方法--与传统汽车电路检修方法的比较

介绍多路传输通讯系统基本原理及功能,通过丰田汽车故障实例,将多路传输通讯系统检修方法与传统汽车电路检修方法进行了比较。     

电动汽车无线充电技术的研究与应用

为了有效地减少能源的消耗,从而缓解环境的污染问题。目前各大汽车企业都加大了对电动汽车的投入以及研究力度,整个电动汽车的市场发展日益繁荣,在电动汽车发展的过程中,无线充电技术的应用可以让电动汽车在操作的时候更加便捷,并且安全隐患也较少。本文对电动汽车无线充电技术进行了简单的研究,并且探讨了无线充电技术在电动汽车上的应用以及未来的发展趋势。     

铁路货车车地信息传输技术研究

阐述无线通讯在轨旁数据传输的几种实现方式以及技术特点.针对铁路货车主要设备车载无线无源传感与监测组件、轨旁数据基站和地面监测与诊断主机的组成方式,对采用UWB信息传输方式开展研究铁路货车车地信息传输技术.以DWM1000集成芯片为核心设计的轨旁数据基站的UWB发射模块和UWB基站模块,其采用LEACH协议算法,并具有的...     

单片机在发动机转速测量中的应用

利用单片机测量发动机转速,给出了其测量方案及原理,并设计了其硬件电路部分;给出了单片机的汇编语言源程序和PC机的Visual Basic语言源程序。本设计方案在发动机转速测量中获得了较好的应用,有一定的实用推广价值。     

基于LabVIEW的汽车CAN接口信号采集系统

CAN接口信号采集系统的设计,是为了获得具有CAN接口的汽车部件的动态信息。该系统采用TI公司TMS320LF2407A型DSP作为CAN接收的核心处理器件,通过RS232串行通信把数据发送给PC机,通过LabVIEW实现数据的解包、显示和存储。试验证明该系统可靠性好,达到设计的要求。     

Influence of Error-prone Channel on the Performance of IEEE 802.11 WLAN Utilizing RTS/CTS Handshaking

A comprehensive study was presented for WLAN 802.11b using error-prone channel. It was theoretically and numerically evaluated the performance of three different network sizes with the bit rates that available in 802.11b protocol. Results show that throughput does not change with the size of the network for wide range of bit error rates (BERs) and the channel bit rates play a significant role in the main characteristics of the network. A comprehensive explanation has given for the phenomenon of the packet delay suppression at relatively high level of BERs in view of the size of the networks and the BERs. The effect length of the transmitting packets is also investigated.     

Overlay Share Mesh for Interactive Group Communication with High Dynamic

An overlay share mesh infrastructure is presented for high dynamic group communication systems, such as distributed interactive simulation (DIS) and distributed virtual environments (DVE). Overlay share mesh infrastructure can own better adapting ability for high dynamic group than tradition multi-tree multicast infrastructure by sharing links among different groups. The mechanism of overlay share mesh based on area of interest (AOI) was discussed in detail in this paper. A large number of simulation experiments were done and the performance of mesh infrastructure was studied. Experiments results proved that overlay mesh infrastructure owns better adaptability than traditional multi-tree infrastructure for high dynamic group communication systems.