中国空间科学技术2012，Vol.32Issue(6)：75-80,6.DOI:10.3780/j.issn.1000-758X.2012.06.011
一种新的卫星通信系统中的载波频率同步技术
A Carrier Frequency Synchronization Method in Satellite Communications System
吕强 1齐维孔 1薛永1
作者信息
- 1. 中国空间技术研究院通信卫星事业部,北京100094
- 折叠
摘要
Abstract
Aiming at the low precision of the traditional carrier frequency synchronization method, a new frequency estimation method was proposed, using the traditional method to get primary frequency estimation before demodulation and using the decoding information to estimate and compensate the rudimental frequency. Simulation results show the proposed method can effectively control the fluctuation of the rudimental frequency which was brought by the traditional method, decrease the influence on system performance, get better decoding performance, reduce the demodulation threshold and lead to more efficient use of system power while not occupy more frequency band.关键词
频率同步/频偏估计/译码信息/卫星通信Key words
Frequency synchronism/Frequency estimation/Decoding information/Satellite communication引用本文复制引用
吕强,齐维孔,薛永..一种新的卫星通信系统中的载波频率同步技术[J].中国空间科学技术,2012,32(6):75-80,6.
