摘要
随着通信技术的发展,频谱资源极度紧缺,非正交多址接入(Non-Orthogonal Multiple Access, NOMA)技术就是为解决频谱资源短缺提出的一种多址复用技术。其中非正交多址接入中合理的资源分配方案对系统的性能有着重要影响,本文主要研究了一种树形功率分配算法,仿真结果显示该算法总传输速率优于固定功率分配算法,并且随着路径系数的变化,总传输速率所受影响不大。
With the development of communication technology,spectrum resources are extremely scarce.Non orthogonal multiple access(NOMA)technology is a multiple access technology to solve the shortage of spectrum resources.A reasonable resource allocation scheme has an important impact on the performance of the system.In this paper,a tree power allocation algorithm is discussed.The simulation results show that the total transmission rate of the algorithm is better than that of the fixed power allocation algorithm,and with the change of the path coefficient,the total transmission rate is not aff ected much.
作者
雒艳
LUO Yan(Xi'an Zhongxing New Software Co.,Ltd.,Xi'an Shaanxi 710114)
出处
《软件》
2021年第4期135-137,156,共4页
Software
关键词
非正交多址接入
用户匹配
功率分配
遗传算法
树形算法
non-orthogonal multiple access
user matching
power allocation
genetic algorithm
tree algorithm