Cooperation in Space: HAPS-Aided Optical Inter-Satellite Connectivity With Opportunistic Scheduling

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ERDOĞAN E., Altunbaş İ., Kurt G. K., Yanikomeroglu H.

IEEE COMMUNICATIONS LETTERS, cilt.26, sa.4, ss.882-886, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 26 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1109/lcomm.2022.3140247
  • Dergi Adı: IEEE COMMUNICATIONS LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.882-886
  • Anahtar Kelimeler: Satellites, Attenuation, Low earth orbit satellites, Laser modes, Lasers, Signal to noise ratio, Indexes, Inter-satellite communications, HAPS-aided transmission, laser satellite communication, PERFORMANCE, SYSTEMS
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Issues with tracking, precision pointing, and Doppler shift are the major sources of performance loss in laser inter-satellite communication that can severely decrease the coverage and overall performance of satellite constellations. As a solution to these problems, we propose a cooperation strategy in which a high altitude platform station (HAPS) staying at a quasi-stationary position contributes to the inter-satellite connectivity. In this setup, the HAPS node uses two different scheduling approaches: one that relies on the zenith angle; the other on instantaneous signal-to-noise ratio. To quantify the performance of the proposed scheme, overall outage probabilities for the two scheduling methods are obtained. In addition, guidelines for the design of practical inter-satellite networks are provided.