Secrecy sum rate maximization for a MIMO-NOMA uplink transmission in 6G networks


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Dursun Y., Wang K., Ding Z.

Physical Communication, cilt.53, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 53
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1016/j.phycom.2022.101675
  • Dergi Adı: Physical Communication
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC
  • Anahtar Kelimeler: Multiple input multiple output (MIMO), Non-orthogonal multiple access (NOMA), Physical layer security (PLS), Sixth generation radio access networks (6G-RAN)
  • Marmara Üniversitesi Adresli: Hayır

Özet

Non-orthogonal multiple access (NOMA), as a well-qualified candidate for sixth-generation (6G) mobile networks, has been attracting remarkable research interests due to high spectral efficiency and massive connectivity. The aim of this study is to maximize the secrecy sum rate (SSR) for a multiple-input multiple-output (MIMO)-NOMA uplink network under the maximum total transmit power and quality of service (QoS) constraints. Thanks to the generalized singular value decomposition method, the SSR of NOMA is compared with conventional orthogonal multiple access and other baseline algorithms in different MIMO scenarios. Due to the subtractive and non-convex nature of the SSR problem, the first-order Taylor approximation is exploited to transform the original problem into a suboptimal concave problem. Simulation results are provided and compared with some other benchmarks to evaluate the efficacy of the proposed method.