摘要
针对卫星通信系统应用中可能遇到的扩容问题进行了研究,提出了通过采用偏移载波的组合调制信号体制设计以提高卫星通信系统入站服务能力的基本思路和设想。基于新的设计方法,在保持已有系统和链路资源不变的情况下,可以实现系统入站服务能力的大幅度提高,仿真实验结果表明采用Alt BOC与BPSK调制的组合方式可使入站能力提高100%,而采用BOC与BPSK调制的组合方式可以使入站服务能力提高66.35%。这种组合调制方式对未来卫星通信系统的设计与改进提供了新的途径和参考。
Focused on the service capability expansion problem in satellite communication systems, a combined signal design method of binary offset carrier modulation is proposed. Compared with the common signal design, the inbound capability of satellite communication system can be improved with the new method without more wireless resource usage. The inbound capability can be improved by 100% by the combination of AltBOC and BPSK,and 66.35% by the combination of BOC and BPSK.The method provides a new approach and reference for the design and improvement of future satellite communication systems.
作者
魏海涛
鲍亚川
蔚保国
WEI Hai-tao BAO Ya-chuan YU Bao-guo(The 54 th Research Institute of CETC, Shijiazhuang Hebei 050081, China State Key Laboratory of Satellite Navigation System and Equipment Technology Shijiazhuang Hebei 050081,China)
出处
《无线电通信技术》
2017年第1期11-14,共4页
Radio Communications Technology
基金
中国电科航天信息应用技术重点实验室基金课题(EX156290055)
卫星导航系统与装备技术国家重点实验室专项课题
关键词
偏移载波调制
谱分离系数
等效载噪比
入站容量
binary offset carrier modulation
spectrum separation coefficient
equivalent carrier noise rate
inbound capacity
