NOMA inspired cooperative relaying system using an AF relay
IEEE Wireless Communications Letters, cilt.8, sa.1, ss.261-264, 2019 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 8 Sayı: 1
- Basım Tarihi: 2019
- Doi Numarası: 10.1109/lwc.2018.2869592
- Dergi Adı: IEEE Wireless Communications Letters
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.261-264
- Anahtar Kelimeler: Cooperative relaying, NOMA, amplify and forward, diversity order, outage probability, ergodic sum rate
- Atatürk Üniversitesi Adresli: Hayır
Özet
In this letter, we propose a cooperative relaying system (CRS) based on non-orthogonal multiple access (NOMA) which uses an amplify-and-forward relay. This letter proposes a novel detection scheme in which the received signals of two consecutive time slots at destination is applied. We calculate asymptotic outage probability and derive diversity order of two for each symbol. Simulations show that our system has much better outage performance than NOMA-based CRS with decode-and-forward (DF) relay. Also, asymptotic ergodic sum rate increases log-linearly with transmit SNR and outperforms NOMA-based CRS with DF relay and conventional CRS. Finally, we verify analytical results by Monte-Carlo simulations.