模糊逻辑决策室内VLC多址接入与功率分配方案  

Fuzzy Logic Decision Multiple Access and Power Allocation Scheme for Indoor VLC

作　　者：刘焕淋[1] 陈科 杨健 陈浩楠 杨帅 LIU Huanlin;CHEN Ke;YANG Jian;CHEN Haonan;YANG Shuai(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《北京邮电大学学报》2023年第6期61-65,71,共6页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(51977021)。

摘　　要：为了满足大规模用户接入以及差异化的用户请求速率的需求,研究了室内可见光通信(VLC)中模糊逻辑决策的非正交多址接入(NOMA)和正交多址接入方案。考虑了用户数量、用户请求速率和用户信道增益,设计了基于模糊逻辑决策用户接入NOMA/正交多址接入的模式选择算法;在功率分配方案中,设计NOMA间不均等的子载波功率分配和基于差异化请求速率的NOMA组内功率分配算法,以提高系统的吞吐量。仿真实验结果表明,所提方案能提高VLC系统的吞吐量和用户平均满意度。In order to meet the needs of large-scale user access and differentiated user request rates,non-orthogonal multiple access(NOMA)and orthogonal multiple access schemes for fuzzy logic decision-making in indoor visible light communications(VLC)are studied.The proposed scheme considers the number of users,user request rate and user channel gain,and designs a mode selection algorithm based on fuzzy logic to decide the user access NOMA or orthogonal multiple access mode.In power allocation phase,an unequal subcarrier power allocation between NOMA group and power allocation between users in a NOMA group according to user's differentiated request rates are designed to improve the throughput of the system.The simulation results show that proposed scheme can improve the VLC system throughput and average user satisfaction.

关 键 词：室内可见光通信 模糊逻辑 模式选择 多址接入 功率分配 

分 类 号：TN929.11[电子电信—通信与信息系统]