Joint Digital Analogue DVB-S2(X) Link Optimization in Non-linear Channel

Mengwei Sun, George Goussetis, Kai Xu, Yuan Ding, Stephen McLaughlin, Andrea Segneri, Maria Canavate Sanchez

Research output: Contribution to journalArticlepeer-review

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Abstract

Future broadband satellite communication (SatCom) systems require a high throughput of data transmission, which calls for operation at higher frequency bands. Adaptive coding and modulation (ACM) technology has been considered as a means to obtain improved performance further at these frequencies. However, the ACM protocols in current DVB-S2 and DVB-S2(X) standards do not take the effects that arise from the non-linear link with memory into account, which is generated by the cascade of a high-power amplifier (HPA) and digital root raised cosine (RRC) filters. This paper first reveals the non-linear characteristics of the SatCom link, and transfers this into an equivalent full-linear link with an additive noise source thanks to the pre-distortion algorithm. Using this equivalent modeling, an approach of selecting/adapting the optimum coding, modulation scheme and associated system configurations for a given channel fading level is proposed. Both simulations and experimental test-bed performance are presented to validate the proposed method.
Original languageEnglish
Pages (from-to)40794-40805
Number of pages12
JournalIEEE Access
Volume10
DOIs
Publication statusPublished - 13 Apr 2022

Keywords

  • DVB-S2/DVB-S2(X)
  • Digital video broadcasting
  • Finite impulse response filters
  • Forward error correction
  • Modulation
  • Nonlinear distortion
  • Parity check codes
  • Standards
  • equivalent full-linear link
  • non-linear system
  • optimum configurations

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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