Joint Scheduling and Power Allocation Using Non-Orthogonal Multiple Access in Multi-Cell Beamforming Networks
Abstract
1. Introduction
2. System Model and Problem Formulation
2.1. System Model
2.2. Problem Formulation
3. Joint Scheduling and Power Allocation with NOMA
3.1. Optimality Conditions and Approximations
3.2. Heuristic Iterative Water-Filling
Algorithm 1 Heuristic iterative water-filling algorithm for multi-cell WLAN |
(1) Initialization |
Initialize where where . |
Repeat |
(2) Beam allocation |
Allocate beam based on initialized according to (10) |
for = to do |
for b = 1 to B do |
Select schedule according to (18) |
Allocate beam b to schedule |
end |
end |
(3) Power allocation |
Allocate beam power p based on allocated |
Find according to (23) by using the bisection method |
for = to do |
for b = 1 to B do |
Compute according to (20) |
end |
end |
Until |
4. Performance Evaluation
4.1. Parameter for System Level Performance Evaluation
4.2. Simulation Results and Discussions
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Parameter | Value |
---|---|
Cell radius | 10 m |
Distance between two cells | 34.6 m/17.3 m |
Maximum number of users in a cell | 30 |
Number of beams in a cell | 3 |
Carrier frequency | 2.4 GHz |
Channel bandwidth | 20 MHz |
Noise spectral density | −174 dBm/Hz |
Scheduling interval | 1 ms |
Throughput averaging interval () | 1024 ms |
Maximum transmittable power of AP () | 20 dBm |
Path-loss (dB) [20] |
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Shin, K.; Jo, O. Joint Scheduling and Power Allocation Using Non-Orthogonal Multiple Access in Multi-Cell Beamforming Networks. Electronics 2020, 9, 896. https://doi.org/10.3390/electronics9060896
Shin K, Jo O. Joint Scheduling and Power Allocation Using Non-Orthogonal Multiple Access in Multi-Cell Beamforming Networks. Electronics. 2020; 9(6):896. https://doi.org/10.3390/electronics9060896
Chicago/Turabian StyleShin, Kyungseop, and Ohyun Jo. 2020. "Joint Scheduling and Power Allocation Using Non-Orthogonal Multiple Access in Multi-Cell Beamforming Networks" Electronics 9, no. 6: 896. https://doi.org/10.3390/electronics9060896
APA StyleShin, K., & Jo, O. (2020). Joint Scheduling and Power Allocation Using Non-Orthogonal Multiple Access in Multi-Cell Beamforming Networks. Electronics, 9(6), 896. https://doi.org/10.3390/electronics9060896