基于恒幅多频载波调制的频率分集

详细信息

Frequency Diversity Based on Constant Amplitude Multi-Carrier Modulation

1.
School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
2.
CETC 54, Shijiazhuang 050081, China

摘要: 针对信号在无线时变信道传输时出现频率选择性衰落这种特性，频率分集是克服衰落的有效途径．目前常用的时频相调制方式造成信号频谱展宽，为此本文提出了几种利用恒幅多频载波实现频率分集的方法，使得调制后的分集信号具有恒幅特性和较高的频谱利用率，适用于多重频率分集的通信系统．
- 恒幅多频载波 /
- 多重频率分集 /
- 时频相调制 /
- 线性调频
Abstract: For the frequency selective fading characteristics of signals transmitted on a time-varying radio channel,the frequency diversity is an effective approach to controlling fading.Nowadays,the commonly used time-frequency-phase modulation causes the signals spectrum spread.Several methods of the frequency diversity which use constant amplitude multi-carrier are proposed,and they make the frequency diversity signals modulated to be of constant amplitude and higher spectrum efficiency.The methods can be applied to the communication system of multi-order frequency diversities.
- constant amplitude multi-carrier /
- multi-order frequency diversity /
- time-frequency-phase modulation /
- chirp

[1]	Assimi A N,Poulliat C,Fijalkow I.On cyclic frequency diversity for single-carrier packet retransmissions[C]//1EEE International Symposium on Information Theory.Piscataway,NJ,USA:IEEE,2009:1378-1382.
[2]	凌献忠.一种用于OFDM系统的频率分集ARQ方案[J].信息技术,2009(1):47-49.Ling X Z.Frequency diversity ARQ scheme for OFDM systems[J].Information Technology,2009(1):47-49.
[3]	Rliera-Palou F,Fremenias G.OFDM with adaptive frequency diversity[J].IEEE Signal Processing Letters,2009,16(10):837-840.
[4]	刘圣民,熊兆飞.对流层散射通信技术[M].北京:国防工业出版社,1982.Liu S M,Xiong Z F.Technology of the troposphere scattering communication[M].Beijing:National Defense Industrial Press,1982.
[5]	林茂庸,柯有安.雷达信号理论[M].北京:国防工业出版社,1984.Lin M Y,Ke Y A.Radar signal theory[M].Beijing:National Defense Industrial Press,1984.