目录 抗衰落技术....................................................................................................................................... 2 一、概述 ................................................................................................................................... 2 1 )引起衰落的原因 ......................................................................................................... 2 2 )抗衰落技术的种类 ..................................................................................................... 2 二、分集接收技术 ................................................................................................................... 2 1 )基本思想 ..................................................................................................................... 3 2 )适用范围 ..................................................................................................................... 3 3 )如何实现自身的功能 ................................................................................................. 3 (1)时间分集 ......................................................................................................... 3 (2)空间分集 ......................................................................................................... 4 (3)频率分集 ......................................................................................................... 5 4 )各分集技术之间的优缺点 ......................................................................................... 5 三、合并技术 ........................................................................................................................... 5 1 )基本思想: ................................................................................................................. 5 2 )适用范围: ...........................................................................................................