Communication capacity enhancement with adaptive resource assignment for multi-beam mobile satellite communication systems

Yoshinori Nakasuga, Jin Mitsugi, Kohei Ohata, Masazumi Ueba

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Mobile satellite communication systems are attracting much attention as an effective way to provide broadband communications in planes, ships, and long-haul trains in which economical services are not effectively provided by terrestrial systems. Such a system usually requires a wide frequency bandwidth and a satellite with high electrical output power, but these resources are severely restricted. A multi-beam system with frequency reuse is able to spread the usable bandwidth virtually. Applying an adaptive modulation method to the system achieves efficient use of resources. In this system, optimally assigning resources to beams is indispensable in enhancing the system capacity. However, this optimization method becomes complex since it is necessary to consider the influence of inter-beam interference which may depend on the variation in the communication traffic distribution. We propose a new adaptive resource assignment method in order to overcome this complexity and to enhance the system capacity. In the proposed method, a bandwidth vector and an approximate curve of the spectrum efficiency are introduced. Based on case studies assuming 19 beams, we show that the proposed method achieves 4.2 times higher system capacity than that of a system in which resources of each beam are fixed.

本文言語English
ホスト出版物のタイトルA Collection of the 22nd AIAA International Communications Satellite Systems Conference and Exhibit Technical Papers
出版社American Institute of Aeronautics and Astronautics Inc.
ページ336-348
ページ数13
ISBN(印刷版)1563477122, 9781563477126
DOI
出版ステータスPublished - 2004 1 1
イベントA Collection of the 22nd AIAA International Communications Satellite Systems Conference and Exhibit - Monterey, CA, United States
継続期間: 2004 5 92004 5 12

出版物シリーズ

名前A Collection of the 22nd AIAA International Communications Satellite Systems Conference and Exhibit Technical Papers
1

Other

OtherA Collection of the 22nd AIAA International Communications Satellite Systems Conference and Exhibit
CountryUnited States
CityMonterey, CA
Period04/5/904/5/12

ASJC Scopus subject areas

  • Engineering(all)

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