Yayınlanmış 1 Ocak 2020
| Sürüm v1
Dergi makalesi
Açık
Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems
Oluşturanlar
- 1. Nanjing Univ Posts & Telecommun, Sch Internet Things, Nanjing 210003, Peoples R China
- 2. Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England
- 3. Koc Univ, Dept Elect & Elect Engn, Commun Res & Innovat Lab CoreLab, TR-34450 Sariyer, Turkey
- 4. Mem Univ, Dept Elect & Comp Engn, St John, NF A1C 5S7, Canada
Açıklama
In this letter, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex. To solve this problem, an alternative optimization and successive convex approximation based iterative algorithm is proposed. Numerical results illustrate that: 1) the proposed scheme offers significant sum-rate gains, which confirms the effectiveness of introducing IRS for mmWave-NOMA systems; 2) the proposed algorithm with discrete phase shifts can achieve close performance to that of continuous phase shifts.
Dosyalar
bib-b5130e6c-dcd1-42fc-ac15-304beb633398.txt
Dosyalar
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