摘要
首先简要介绍了卫星通信中扩频系统的基本模型和表达式,给出了系统在失真信道中进行计算机仿真的基本模型。然后,利用通信系统仿真软件包ACOLADE,建立了扩频系统在群时延失真信道中的仿真模型,建立了群时延失真信道模型,进行了QPSK、QPSK+DS、QPSK+FH等体制在群时延失真信道的特性仿真分析,最后得出了一些有一定参考价值的分析结果。
The basic concept and expressions for a spread spectrum satellite communication system are introduced, and its diagrams for simulation in distortion channel are given, some models for simulation in ACOLADE software are established, including group delay channel and spread spectrum satellite communication system, etc. Some systems, such as QPSK, QPSK ＋ DS, QPSK ＋ FH, are simulated in group delay channel. Finally, Some useful results are achieved.
出处
《电讯技术》
2006年第2期111-113,共3页
Telecommunication Engineering
关键词
卫星通信
扩频
群时延失真
仿真
satellite communication
spread spectrum
group delay distortion
simulation
