Name
Title | ||
|---|---|---|
Spectral-Efficiency Optimization For Noma-Based Amplify-And-Forward Cooperative Relaying Systems With Beamforming And Power Allocation |
Abstract | ||
|---|---|---|
In this paper, we propose a novel spectrum-efficiency (SE) optimization scheme for amplify-and-forward (AF) cooperative relaying systems based on non-orthogonal multiple-access (NOMA). In this network, a weighted-sum-minimum mean-squared-error (WSMMSE) method is utilized to transform the original non-convex optimization problem into a tractable optimization problem. Then, the relay beamforming-matrix (BM) and the power-allocation (PA) coefficients are alternately optimized by use of the iterative beamforming method and the Lagrange-multiplier (LM) method subject to the quality-of-service requirements. Monte Carlo simulation results verify that our proposed new scheme can attain better performance than the optimal PA-NOMA technique and the conventional orthogonal multiple-access (OMA) technique. |
Year | DOI | Venue |
|---|---|---|
2021 | 10.1007/s11276-021-02733-9 | WIRELESS NETWORKS |
Keywords | DocType | Volume |
Non-orthogonal multiple-access (NOMA), Power allocation (PA), Relay beamforming-matrix (BM), Weighted-sum-minimum mean-squared-error (WSMMSE), Spectrum-efficiency (SE) | Journal | 27 |
Issue | ISSN | Citations |
6 | 1022-0038 | 0 |
PageRank | References | Authors |
0.34 | 0 | 5 |