摘要
非正交多址接入(NOMA)技术使多个用户共享一个时频资源块,显著地提高了频谱利用率,已成为5G多址技术的研究热点。针对NOMA系统能量效率最大化问题,对非正交多址接入技术中功率分配进行了研究,提出了基于混沌粒子群优化算法的NOMA功率分配方案。建立了能量效率最大化的NOMA优化模型,利用混沌粒子群优化算法对系统功率进行分配,使NOMA系统的能量效率得到优化。仿真结果表明,当发射功率为36 dBm时,系统能量效率最大,且与传统粒子群算法相比所需迭代次数更少,获得的能量效率更优。
Non-orthogonal multiple access(NOMA) technology, which enables multiple users to share a single time-frequency resource block, has become a research hotspot of 5 G multiple access technology. In order to maximize the energy efficiency of NOMA system, power allocation in non-orthogonal multiple access technology is studied, and a new NOMA power allocation scheme based on chaotic particle swarm optimization is proposed. The energy efficiency optimization model of NOMA is established, and the energy efficiency of the NOMA system is optimized by using the chaotic particle swarm optimization to distribute the power of the system. The simulation results show that the energy efficiency of the system is maximum when the power is 36 dBm, and the iteration times are less and the energy efficiency is better than traditional particle swarm optimization algorithm.
作者
刘卓
韩凯越
聂彬
康鑫
Liu Zhuo;Han Kaiyue;Nie Bin;Kang Xin(School of Information and Communication Engineering,North University of China,Taiyuan 030051,China;Key Laboratory of Information Detection and Processing,North University of China,Taiyuan 03005l,China)
出处
《电子测量技术》
北大核心
2022年第16期159-163,共5页
Electronic Measurement Technology
关键词
非正交多址接入
能量效率
功率分配
混沌
粒子群
non-orthogonal multiple access
energy efficiency
power allocation
chaos
particle swarm
