An Efficient Energy Efficiency Power Allocation Algorithm for Space-Terrestrial Satellite NOMA Networks

2021 ◽  
pp. 217-226
Author(s):  
Yanan Wu ◽  
Lina Wang
Keyword(s):  
Energy Efficiency ◽  
Power Allocation ◽  
Allocation Algorithm ◽  
Efficient Energy

Joint user clustering and salp based particle swarm optimization algorithm for power allocation in MIMO-NOMA

2021 ◽  
Vol 40 (5) ◽  
pp. 9007-9019
Author(s):  
Jyotirmayee Subudhi ◽  
P. Indumathi
Keyword(s):  
Energy Efficiency ◽  
Particle Swarm Optimization ◽  
Power Allocation ◽  
Multiple Access ◽  
Particle Swarm ◽  
Pso Algorithm ◽  
Swarm Optimization ◽  
Allocation Algorithm ◽  
User Clustering ◽  
Sum Rate

Non-Orthogonal Multiple Access (NOMA) provides a positive solution for multiple access issues and meets the criteria of fifth-generation (5G) networks by improving service quality that includes vast convergence and energy efficiency. The problem is formulated for maximizing the sum rate of MIMO-NOMA by assigning power to multiple layers of users. In order to overcome these problems, two distinct evolutionary algorithms are applied. In particular, the recently implemented Salp Swarm Algorithm (SSA) and the prominent Optimization of Particle Swarm (PSO) are utilized in this process. The MIMO-NOMA model optimizes the power allocation by layered transmission using the proposed Joint User Clustering and Salp Particle Swarm Optimization (PPSO) power allocation algorithm. Also, the closed-form expression is extracted from the current Channel State Information (CSI) on the transmitter side for the achievable sum rate. The efficiency of the proposed optimal power allocation algorithm is evaluated by the spectral efficiency, achievable rate, and energy efficiency of 120.8134bits/s/Hz, 98Mbps, and 22.35bits/Joule/Hz respectively. Numerical results have shown that the proposed PSO algorithm has improved performance than the state of art techniques in optimization. The outcomes on the numeric values indicate that the proposed PSO algorithm is capable of accurately improving the initial random solutions and converging to the optimum.

scholarly journals Energy efficiency of cooperative D2D communications underlaying LTE-A networks

2018 ◽  
Vol 189 ◽  
pp. 03016 ◽  
Author(s):  
Xiaoying Zhang ◽  
Ahmed Khwaja ◽  
Muhammad Naeem ◽  
Alagan Anpalagan
Keyword(s):  
Energy Efficiency ◽  
Power Allocation ◽  
Resource Utilization ◽  
Energy Efficient ◽  
Average Energy ◽  
D2d Communication ◽  
Cellular Communications ◽  
D2d Communications ◽  
Allocation Algorithm ◽  
Power Resources

Device-to-device (D2D) communications underlaying LTE-A networks is expected to bring significant benefits for resource utilization and energy efficiency (EE) improvement of user equipment (UE). However, the allocation of radio and power resources to D2D communications needs elaborate coordination, because of the interference between D2D communications and cellular communications. In this paper, we propose an energy-efficient cooperative D2D communication (EECD2D) technique using a power allocation algorithm, aiming at maximizing EE introduced by D2D communications in LET-A networks. Specifically, we define four D2D and cellular combinations based on distances, and analyze average EE of EECD2D and that of cooperative D2D communications without optimization. Results show that average EE of our algorithm is much higher than that without optimization, and closer D2D cooperators and distant cellular UEs whose uplink resource is reused, achieve highest average energy efficiency.

Research on Power Allocation Algorithm for Maximizing Energy Efficiency in Uplink NOMA System of 5G Smart Grid

2021 ◽  
Author(s):  
Li Chen ◽  
Li Peizhe ◽  
Xiao Zhenfeng ◽  
Wu Yefan ◽  
Liu Haotian ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Smart Grid ◽  
Power Allocation ◽  
Allocation Algorithm

Power allocation algorithm with QoS-requirements in multi-user relay networks

2011 ◽  
Vol 31 (3) ◽  
pp. 606-608
Author(s):  
Jing-lin YAN ◽  
Lun TANG ◽  
Qian-bin CHEN ◽  
Bo CHEN
Keyword(s):  
Power Allocation ◽  
Relay Networks ◽  
Allocation Algorithm
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