Capacity analysis of the secondary users in spectrum sharing model over Nakagami- m and log-normal fading channels

Basgumus A., Ardic M. S., Namdar M.

JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY, cilt.38, sa.4, ss.2205-2212, 2023 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 38 Sayı: 4
  • Basım Tarihi: 2023
  • Doi Numarası: 10.17341/gazimmfd.1111493
  • Dergi Adı: JOURNAL OF THE FACULTY OF ENGINEERING AND ARCHITECTURE OF GAZI UNIVERSITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Art Source, Compendex, TR DİZİN (ULAKBİM)
  • Sayfa Sayıları: ss.2205-2212
  • Anahtar Kelimeler: Cognitive radio, ergodic capacity, Nakagami-m and log-normal, fading channels, spectrum sharing, COGNITIVE RADIO NETWORKS, POWER ALLOCATION, 5G
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

In this study, ergodic capacity performance for the secondary user is analyzed under the average received power constraint taking into account the effect of interference from the primary user in the spectrum sharing model for the cognitive radio network. With the capacity-maximizing water-filling solution and power allocation approach, the theoretical derivations for ergodic capacity are provided on Nakagami-m and log -normally distributed fading channels. The numerical results show that interference channels originating from the primary network have a significant impact on the capacity of the secondary user. Ergodic capacity performance for the secondary user is verified by Monte Carlo simulations, taking into account the fading parameter of the Nakagami distribution, the standard deviation of the log-normal distribution, and the Lagrange multiplier parameters that determine the optimum power of the secondary user.