基于嵌入式LINUX的CDMA1X无线视频监控系统的设计和实现
摘要
随着移动通信技术的迅速发展，移动多媒体通信在监控领域已成为热点。本文的主要内容是关于嵌入式Linux系统和CDMA1X无线数据传输技术在视频监控系统中的应用。通过对嵌入式系统软硬件技术的研究，深入掌握嵌入式Linux操作系统的原理，裁剪构造一个满足应用需求的嵌入式Linux内核；研究CDMA1X技术在嵌入式Linux操作系统中的应用。在此基础之上，提出了一种基于嵌入式Linux和CDMA1X的无线图像采集与传输的通用模型。如何实现CDMA1X无线信道上视频流端对端的可靠实时传输，是本论文的主要研究内容。本文提出了一种基于分组丢失率的双信道轮转调度策略，通过调度架构在网络层上的两个无线信道来提高传输的质量与可靠性。实验证明该传输控制和调整策略用于双信道CDMA1X无线图像实时传输时，能够线性提高视频流的传输速率，具有稳定可靠、实时性强等优点，较好地实现了预定的目标要求。
With the rapid development of mobile communication technology, mobilemultimedia communication has turned into a hotspot in the field of monitoring. Thisthesis has mainly researched one application combining the Embedded LinuxOperation System (ELOS) and CDMA1X technology to realize wireless videomonitoring system.
By researching the software technology and hardware technology in embededsystem, going deep into master the principle of ELOS, building embeded Linuxkernel to satisfy application, studing the CDMA1X technology in the application inthe ELOS, a kind of general model of collecting and transmitting video by wirelesswhich based on embedded Linux and CDMA1X. was put forward in this thesis.
The main study in this thesis is to realize reliable and real-time videotransmission from end to end. A double-channel selected mechanism based on packetloss rate was proposed. It can improve transmission quality and reliability by ascheduling algorithm of wireless double-channel on network layer.
As the simulation experiments have shown, this mechanism applied todouble-channel can increase linearly transmission rate of video stream, and enhancesits stability. It also has several advantage such as credibility, cheap, real-time andhigh transmit rate and easy to carry out reserved target.
With the rapid development of mobile communication technology, mobilemultimedia communication has turned into a hotspot in the field of monitoring. Thisthesis has mainly researched one application combining the Embedded LinuxOperation System (ELOS) and CDMA1X technology to realize wireless videomonitoring system.
By researching the software technology and hardware technology in embededsystem, going deep into master the principle of ELOS, building embeded Linuxkernel to satisfy application, studing the CDMA1X technology in the application inthe ELOS, a kind of general model of collecting and transmitting video by wirelesswhich based on embedded Linux and CDMA1X. was put forward in this thesis.
The main study in this thesis is to realize reliable and real-time videotransmission from end to end. A double-channel selected mechanism based on packetloss rate was proposed. It can improve transmission quality and reliability by ascheduling algorithm of wireless double-channel on network layer.
As the simulation experiments have shown, this mechanism applied todouble-channel can increase linearly transmission rate of video stream, and enhancesits stability. It also has several advantage such as credibility, cheap, real-time andhigh transmit rate and easy to carry out reserved target.
引文
[1] Ortiz S. Jr. Embedded OSs Gain the Inside Track. Computer, 2001, 34(11):14-16
[2] Merlo E., Dagenais M., Bachand P. Investigating Large Software System Evolution: the Linux Kernel. Computer Software and Applications Conference, 2002. COMPSAC 2002. Proceedings. 26th Annual Internatinal, 2002. p421-42
[3] Tan TK., Raghunathan A., Jha N. K. Software Architecttural Transformations:a New Approch to Low Energy Embedded Software. Design, Automation and Test in Europe Conference and Exhibition, 2003,2003,p1046-1051
[4] "H.264/MPEG-4 Part 10 White Paper-Variable-Length Coding", www.vcodex.com
[5] Iain E. G. Richardson. H.264 and MPEG-4 Video Compression. 2003, John Wiley&Sons.Ltd ISBN:0-470-84837-5
[6] MSDN.http://msdn.microsoft.com/library/default.asp
[7] 许海燕，付炎．嵌入式系统技术与应用．北京：机械工业出版社，2002
[8] 李善平，刘文峰等．Linux与嵌入式系统．北京：清华大学出版社，2003
[9] 郭玉东．Linux操作系统结构分析．西安：西安电子科技大学出版社，2002
[10] 王学龙．嵌入式Linux系统设计与应用．北京：清华大学出版社，2002
[11] 陈莉君．深入分析Linux内核源代码．北京：人民邮电出版社，2002
[12] (美)Bruce Molay．Unix／linux编程实践教程．北京：清华大学出版社，2004
[13] (美)W．Richard Stevens．UNIX环境高级编程．北京：机械工业出版社，2002
[14] 张威．Linux网络编程教程．北京：希望电子出版社，2002
[15] 黄超．Windows网络编程．北京：人民邮电出版社，2003
[16] 王险峰，刘宝宏．Windows环境下的多线程编程原理与应用．清华大学出版社，2002
[17] 戴梅萼等．高保真实时准动态图像采集压缩和远程传输平台的研究与实现．北京：电子技术应用．2004(3)
[18] 余兆明，李晓飞，陈来春．MPEG标准及其应用．北京邮电大学出版社，2002
[19] 张冰涛．CDMA2000 1X IP协议栈结构和功能部析．移动通信．5／2003
[20] 李艺霞．在CDMA网络进行图像传输的分析．无线通信技术，2004(13)24-25
[21] 张继东．CDMA信道上一种实时图像传输方案．电视技术，2002(10)
[22] CDMA2000-1X系统．http://www.mc21st.com/techfield/systech/cdma2000-1X/main.htm
[23] 毕厚杰．新一代视频压缩编码标准——H.264/AVC．人民邮电出版社，2005
[24] 施博学．基于RTP协议的视频传输与网络阻塞控制研究．北京科技大学硕士学位论文，2005
[2] Merlo E., Dagenais M., Bachand P. Investigating Large Software System Evolution: the Linux Kernel. Computer Software and Applications Conference, 2002. COMPSAC 2002. Proceedings. 26th Annual Internatinal, 2002. p421-42
[3] Tan TK., Raghunathan A., Jha N. K. Software Architecttural Transformations:a New Approch to Low Energy Embedded Software. Design, Automation and Test in Europe Conference and Exhibition, 2003,2003,p1046-1051
[4] "H.264/MPEG-4 Part 10 White Paper-Variable-Length Coding", www.vcodex.com
[5] Iain E. G. Richardson. H.264 and MPEG-4 Video Compression. 2003, John Wiley&Sons.Ltd ISBN:0-470-84837-5
[6] MSDN.http://msdn.microsoft.com/library/default.asp
[7] 许海燕，付炎．嵌入式系统技术与应用．北京：机械工业出版社，2002
[8] 李善平，刘文峰等．Linux与嵌入式系统．北京：清华大学出版社，2003
[9] 郭玉东．Linux操作系统结构分析．西安：西安电子科技大学出版社，2002
[10] 王学龙．嵌入式Linux系统设计与应用．北京：清华大学出版社，2002
[11] 陈莉君．深入分析Linux内核源代码．北京：人民邮电出版社，2002
[12] (美)Bruce Molay．Unix／linux编程实践教程．北京：清华大学出版社，2004
[13] (美)W．Richard Stevens．UNIX环境高级编程．北京：机械工业出版社，2002
[14] 张威．Linux网络编程教程．北京：希望电子出版社，2002
[15] 黄超．Windows网络编程．北京：人民邮电出版社，2003
[16] 王险峰，刘宝宏．Windows环境下的多线程编程原理与应用．清华大学出版社，2002
[17] 戴梅萼等．高保真实时准动态图像采集压缩和远程传输平台的研究与实现．北京：电子技术应用．2004(3)
[18] 余兆明，李晓飞，陈来春．MPEG标准及其应用．北京邮电大学出版社，2002
[19] 张冰涛．CDMA2000 1X IP协议栈结构和功能部析．移动通信．5／2003
[20] 李艺霞．在CDMA网络进行图像传输的分析．无线通信技术，2004(13)24-25
[21] 张继东．CDMA信道上一种实时图像传输方案．电视技术，2002(10)
[22] CDMA2000-1X系统．http://www.mc21st.com/techfield/systech/cdma2000-1X/main.htm
[23] 毕厚杰．新一代视频压缩编码标准——H.264/AVC．人民邮电出版社，2005
[24] 施博学．基于RTP协议的视频传输与网络阻塞控制研究．北京科技大学硕士学位论文，2005
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |