摘要
发射分集技术是移动通信中的一项关键技术,在第三代移动通信中已经开始普遍使用。讨论发射分集技术在数字电视地面广播中的应用背景与研究意义,介绍几种发射分集技术,分析各自的优缺点。特别针对空时编码进行详细讨论,最后对发射分集技术的应用前景进行阐述。
Transmit diversity （TD） scheme is an important technique in wireless communication, it has been widely adopted in the third generation wireless communication systems. The background and importance of transmit diversity in digital television terrestrial broadcasting system are introduced , then Various TD schemes are introduced in this paper, including their features and also especial attention on space time codes. Finally, the prospects of transmit diversity technology are described.
出处
《铁道通信信号》
2008年第9期43-45,共3页
Railway Signalling & Communication
关键词
发射分集
空时分组编码
数字电视地面广播
Transmit diversity, Space time block codes, Digital television terrestrial broadcasting
