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- Title
多波束移动卫星系统的自适应开环预编码方法.
- Authors
安泽亮; 宋高俊; 陈慧慧
- Abstract
The conventional precoding scheme based on perfect channel-state information(CSI) is not suitable for satellite mobile communication system due to the round-trip delay and satellite-land relative motion. For this problem,a precoding scheme based on open-loop channel estimation and derives system transmission rate is proposed,in which the transmitter utilizes open-loop partial CSI to achieve multi-beam joint precoding. In addition,an adaptive precoding scheme is also presented to deal with the performance deterioration in strong interference. According to the open-loop slowly-time-varying user location and channel statistics information,the transmitter adaptively chooses precoding and frequency refuse method to achieve optimal system performance. The theoretical analysis and simulation results validate substantial performance gains compared with traditional interference elimination scheme and demonstrate that the proposed schemes also overcome the limitation of conventional precoding techniques.
- Subjects
MOBILE satellite communication; MOBILE communication systems; TELECOMMUNICATION satellites; RELATIVE motion; CHANNEL estimation; TRANSMITTERS (Communication); MIMO systems
- Publication
Telecommunication Engineering, 2019, Vol 59, Issue 10, p1169
- ISSN
1001-893X
- Publication type
Article
- DOI
10.3969/j.issn.1001-893x.2019.10.010