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A study of frequency utilization efficiency of OFDMA adaptive coding and modulation on Ka-band satellite communications system

A study of frequency utilization efficiency of OFDMA adaptive coding and modulation on Ka-band satellite communications system

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We investigate adaptive coding and modulation (ACM) with orthogonal frequency-division multiple access (OFDMA) relative to maintaining highfrequency utilization efficiency according to the change of power and frequency bandwidth limited channels on Ka-band high-throughput satellite (HTS) systems. Using the DVB-S2X modulation scheme for OFDMA, implementation of ACM results in improved frequency utilization efficiency.

Chapter Contents:

  • 25.1 Introduction
  • 25.2 Satellite link model
  • 25.3 OFDMA
  • 25.3.1 Outline of OFDMA
  • 25.3.2 Application to ACM
  • 25.4 DVB-S2X
  • 25.4.1 Outline of DVB-S2(S2X)
  • 25.4.2 Modulation and coding for DVB-S2(S2X) standards
  • 25.5 Improvement of frequency utilization efficiency by ACM
  • 25.5.1 Adaptive algorithm
  • 25.5.2 Improvement of frequency utilization efficiency
  • 25.6 Conclusion
  • Acknowledgments
  • References

Inspec keywords: satellite communication; OFDM modulation; digital video broadcasting; adaptive codes; frequency division multiple access

Other keywords: highfrequency utilization efficiency; frequency bandwidth limited channels; OFDMA; ACM results; adaptive coding; DVB-S2X modulation scheme; orthogonal frequency-division multiple access; Ka-band satellite communications system; Ka-band high-throughput satellite; improved frequency utilization efficiency

Subjects: Satellite communication systems; Other topics in statistics; Radio and television broadcasting; Multiple access communication; Modulation and coding methods

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