摘要
介绍一种可较好地解决多径衰落所引起的信道选择性衰落 ,又可克服信道的瑞利衰落、性能优良的正交频分复用数字调制技术。它是通过多载波的并行传输方式将 N个单元码同时传输 ,来取代通常的串行码序列传送 ,使每个单元码所占的频带小于Δf 。
The paper introduces a kind of orthonormal frequrncy division multiplexing(FDM) digital modulation technique with a good performance which can solve,in some way,the fading problem of both the channel selective one resulted from multi\|path fading and Rayleigh fading.Instead of serial transmission of symbols,multiple carriers(N carriers)are used so that N parallel symbols are transported simultaneously,which results in frequency band occupied per symbol less than of and prevents symbols interference.
出处
《现代电力》
2000年第4期19-23,共5页
Modern Electric Power
关键词
数字调制
正交频分复用
通信
码间干扰
channel
digital modulation
orthonormal
frequency division multiplexin`
