摘要
卫星通信相关的费用包括固定投资和运行费用,从卫星通信经济学的角度出发,优化卫星通信可以节省成本。首先介绍了VSAT卫星通信网的网络拓扑及组网方式;其次从卫星通信的调制及编码技术两个方面分别对卫星通信进行优化,重点对格状编码调制、LDPC码、Turbo码与级联码编码技术、载波迭加技术进行了研究,并分别指出了各自的优点;最后对优化卫星通信技术的应用前景进行讨论。
The costs of satellite communications include fixed investments and operation costs.Starting from satellite communication economics,the optimization of satellite communications could save the costs.This paper first gives the network topology and networking mode of VAST.Then,from modulation and coding technology,it treats of the optimization of satellite communications,with focus on TCM modulation,LDCP coding technology,Turbo and concatenated codes,and the technology of DoubleTalk Carrier-in-Carrier,and points out respectively their merits.Finally,it discusses the application prospects of the optimized satellite communications technology.
出处
《通信技术》
2010年第6期51-53,共3页
Communications Technology
关键词
卫星通信经济学
优化卫星通信
编码调制
satellite communication economics
optimized satellite communications
coded modulation
