Title :
Research on the propagation delay characteristic of multi-beam GEO satellite communications system
Author :
Luan, Xi ; Wu, Jianjun ; Xu, Xiaoyan ; Ren, Shubo ; Xiang, Haige
Author_Institution :
Satellite & Wireless Commun. Lab., Peking Univ., Beijing, China
Abstract :
The plan of constructing satellite communications system has been implementing in China since the miserable Wenchuan Earthquake in 2008. Several radio transmission technologies of terrestrial cellular systems are investigated to adapt to the satellite communications environment. In order to study the feasibility of TDD or HFDD satellite communications system compatible with TD-SCDMA standard, an analytical expression of the propagation delay within GEO satellite spot beams is derived based on the space geometry model. Meanwhile, the differential propagation delays in several typical beams are calculated, according to a possible multi-beam coverage pattern of China. The results show that satellite communications system compatible with TD-SCDMA is preliminarily feasible even in the worst case.
Keywords :
cellular radio; code division multiple access; satellite communication; subcarrier multiplexing; time division multiple access; China; HFDD satellite communications; TD-SCDMA standard; TDD satellite communications; differential propagation delays; miserable Wenchuan Earthquake; multibeam GEO satellite communications system; multibeam coverage pattern; propagation delay characteristic; radio transmission technologies; terrestrial cellular systems; Analytical models; Propagation delay; Satellite broadcasting; Satellites; Synchronization; Time division synchronous code division multiple access; Multi-beam satellite system; Time Division Duplex; geosynchronous satellite; propagation delay;
Conference_Titel :
Advanced Communication Technology (ICACT), 2011 13th International Conference on
Conference_Location :
Seoul
Print_ISBN :
978-1-4244-8830-8
