| 摘要: |
| 介绍了手持数字视频广播(DVB-H)的系统结构、网络构架和发展现状,详细讨论了DVB-H系统中的时间分片、多协议封装前向纠错、深度符号交织和无缝业务切换机制等关键技术,从系统参数、建网成本及商用进程等多个角度对DVB-H、地面数字多媒体广播(T-DMB)和MediaFLO三大手机电视地面传输制式进行了分析比较,最后以数字电视广播结合移动通信网络的交互式业务应用为例阐述了未来技术的发展方向。 |
| 关键词: 手持数字视频广播,时间分片,多协议封装,前向纠错,无缝业务切换,发展趋势 |
| DOI：10.3969/j.issn.1001-893X. |
|
| 基金项目: |
|
| Key Techniques and Prospects of DVB-H System |
|
| () |
| Abstract: |
| The system structure,network architecture and current development state of DVB-H are described. Then, the key techniques such as time slicing, Multi-protocol Encapsulation Forward Error Correction (MPE FEC), in-depth interleaving and seamless handover are discussed in detail. The technical comparison among DVB-H, T-DMB and MediaFLO in system parameter,network cost and business process is also given. Finally,some interactive services through the combination of digital television broadcasting network and mobile communications network are presented and the future development is also presented. |
| Key words: DVB-H,time-slicing,MPE,FEC,seamless handover,development trend |
《电讯技术》编辑部 