Scholarlink

<p>This paper surveys recent advances in software-defined radio (SDR) technologies and free-space optical (FSO) inter-satellite links (ISLs) for next-generation satellite networks. We review SDR architectures for space applications and optical link technologies, highlighting that both RF and optical ISLs increasingly require flexible, reconfigurable control planes for adaptive modulation/coding, routing, and pointing. Rather than claiming SDRs uniquely enable optical links, we examine how modern space-rated SDR platforms—proven for RF waveforms—could consolidate both RF and optical link management within a single reprogrammable processor to reduce system complexity and enable deeper cross-layer optimization. Key design considerations, modulation and coding choices, pointing, acquisition and tracking (PAT) mechanisms, network implications, and concrete system integration patterns are presented. Where possible we cite openly available preprints and project reports to ensure references are accessible to all readers (Kaushal and Kaddoum in IEEE Commun Surv Tutor 19(1):57–96, 2017; Chaudhry and Yanikomeroglu in IEEE Trans Commun 69(12):8397–8409, 2021; Liang et al. in IEEE Commun Mag 60(7):56–62, 2022; Vieira et al. in IEEE J Lightwave Technol 41(2):544–556, 2023). Finally, we identify research gaps and propose technical directions to advance reconfigurable, integrated optical-RF satellite networks.</p>

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Survey of software-defined radio and optical communication techniques for inter-satellite links

  • 期刊论文

  • 发表日期：

    2026年2月3日

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  • Debjit Naskar,
  • Ritabhasa Chowdhury

摘要

This paper surveys recent advances in software-defined radio (SDR) technologies and free-space optical (FSO) inter-satellite links (ISLs) for next-generation satellite networks. We review SDR architectures for space applications and optical link technologies, highlighting that both RF and optical ISLs increasingly require flexible, reconfigurable control planes for adaptive modulation/coding, routing, and pointing. Rather than claiming SDRs uniquely enable optical links, we examine how modern space-rated SDR platforms—proven for RF waveforms—could consolidate both RF and optical link management within a single reprogrammable processor to reduce system complexity and enable deeper cross-layer optimization. Key design considerations, modulation and coding choices, pointing, acquisition and tracking (PAT) mechanisms, network implications, and concrete system integration patterns are presented. Where possible we cite openly available preprints and project reports to ensure references are accessible to all readers (Kaushal and Kaddoum in IEEE Commun Surv Tutor 19(1):57–96, 2017; Chaudhry and Yanikomeroglu in IEEE Trans Commun 69(12):8397–8409, 2021; Liang et al. in IEEE Commun Mag 60(7):56–62, 2022; Vieira et al. in IEEE J Lightwave Technol 41(2):544–556, 2023). Finally, we identify research gaps and propose technical directions to advance reconfigurable, integrated optical-RF satellite networks.