A Novel Multi-Satellite Multi-Beam System with Single Frequency Reuse Applying MIMO

Daisuke GOTO  Fumihiro YAMASHITA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E103-B   No.8   pp.842-851
Publication Date: 2020/08/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.2019EBP3158
Type of Manuscript: PAPER
Category: Antennas and Propagation
Keyword: 
satellite communication,  MIMO,  pre-coding,  equalizer,  

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Summary: 
This paper introduces a new multi-satellite multi-beam system with single frequency reuse; it uses the MIMO (Multi Input Multi Output) technique to improve the frequency efficiency as the satellite communication band is limited. MIMO is the one of the most important approaches to improve the spectral efficiency in support of broadband communications. Since it is difficult to achieve high spectral efficiency by simply combining conventional MIMO satellite techniques, i.e. combining a multi-beam system with single frequency reuse with a multiple satellite system, this paper proposes transmitter pre-coding and receiver equalization techniques to enhance the channel capacity even under time/frequency asynchronous conditions. A channel capacity comparison shows that the proposed system is superior to conventional alternatives.