混合NOMA/OFDMA可见光通信系统资源分配算法OA
Resource allocation algorithm of hybrid NOMA/OFDMA visible light communication system
为了进一步降低混合非正交多址/正交频分复用多址(NOMA/OFDMA)技术的多用户多小区可见光通信系统的误码率,提出了一种功率和子载波的联合分配算法.该算法以最小化系统误符号率为优化目标,实现了子小区间载波和用户功率的联合最优分配.首先,理论推导出系统的误符号率表达式;然后,使用Matlab软件进行仿真,模拟可见光通信系统模型,并借助遗传算法得到最优的分配结果;最后,将该算法与现有的算法进行了对比.仿真结果表明,所提算法的误符号率性能更优.
In order to further reduce the bit error rate of multi-user multi-cell visible light communication systems using non-or-thogonal multiple access/orthogonal frequency division multiple access(NOMA/OFDMA)technology,a joint power and subcar-rier allocation algorithm is proposed.This algorithm aims to minimize the system's symbol error rate by achieving the joint opti-mal allocation of carrier and user power across sub-cells.Firstly,the symbol error rate expression of the system is theoretically de-rived.Then,Matlab software is used to simulate the visible light communication system model,and the optimal allocation results are obtained through genetic algorithms.Finally,the proposed algorithm is compared with existing algorithms.The simulation re-sults show that the symbol error rate performance of the proposed algorithm is superior.
沈媛;郭心悦
上海理工大学 光电信息与计算机工程学院,上海 200093
电子信息工程
可见光通信非H正交多址正交频分复用多址资源分配
visible light communicationnon-orthogonal multiple accessorthogonal frequency division multiple accessre-source allocation
《光通信技术》 2024 (002)
24-29 / 6
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