摘要
针对时变多径短波信道提出一种基于差分检测Turbo乘积编码正交频分复用的宽带短波调制解调器的设计方法,并且研究了短波信道带内残存干扰对调制解调器性能的影响。结果表明,用于调制解调器设计的频率等增益分集对带内残存干扰具有白化作用,白化后的带内残存干扰对调制解调器性能的影响和加性高斯噪声类似,系统设计中可将带内残存干扰和高斯噪声等同对待,简化宽带短波系统的设计。
A design of wideband HF modem based on differential detection of turbo product coding orthogonal frequency division multiplexing (TPC-OFDM) is presented. The impact of in-band residual interference on the performance of wideband modem is also considered. The results show that in-band residual interference can be whittened by frequency equal yain diversity in th modom. The impact of the whitened in-band interference on the modem is similar that of the additive Gaussian noise, so the design of the HF wideband modem system is simplified.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2004年第11期1555-1557,共3页
Systems Engineering and Electronics
基金
国家自然科学基金(90104019)
教育部博士点基金(K4010145)资助课题
关键词
短波通信
调制解调器
性能
带内残存干扰
HF communications
modem
performance
in-band residual interference
