AHighly efficient DAMA algorithm for making maximum use of both satellite transponder bandwidth and transmission power

Katsuya Nakahira, Takatoshi Sugiyama, Hiroki Nishiyama, Nei Kato

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes a novel satellite channel allocation algorithm for a demand assigned multiple access (DAMA) controller. In satellite communication systems, the channels' total bandwidth and total power are limited by the satellite's transponder bandwidth and transmission power (satellite resources). Our algorithm is based on multi-carrier transmission and adaptive modulation methods. It optimizes channel elements such as the number of sub-carriers, modulation level, and forward error correction (FEC) coding rate. As a result, the satellite's transponder bandwidth and transmission power can be simultaneously used to the maximum and the overall system capacity, i.e., total transmission bit rate, will increase. Simulation results show that our algorithm increases the overall system capacity by 1.3 times compared with the conventional fixed modulation algorithm.

Original languageEnglish
Pages (from-to)2619-2630
Number of pages12
JournalIEICE Transactions on Communications
VolumeE95-B
Issue number8
DOIs
Publication statusPublished - 2012 Aug

Keywords

  • Adaptive modulation and coding
  • Channel allocation
  • DAMA
  • Multi-carrier transmission
  • Satellite communication

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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