室内VLC-WiFi异构网络中多色载波资源分配  

A Method of Multi-Color Carrier Resource Allocation for Indoor VLC-WiFi Heterogeneous Network

作　　者：陈勇[1] 张薇薇 刘焕淋[2] 陈金林 CHEN Yong;ZHANG Weiwei;LIU Huanlin;CHEN Jinlin(School of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学自动化学院,重庆400065 [2]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《聊城大学学报（自然科学版）》2024年第5期48-59,共12页Journal of Liaocheng University:Natural Science Edition

基　　金：国家自然科学基金项目(51977021);重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0734)资助。

摘　　要：可见光通信接入点(VLC AP)在室内密集部署的方式在扩大VLC-WiFi系统容量的同时,增加了覆盖的小区间干扰。为了降低小区间干扰,提高系统的吞吐量和平均用户满意度,本文设计了多色载波分配与功率控制(MCAPC)的资源分配方法。该方法依据VLC AP的部署位置和信道特性,采用软频率复用方法确定各VLC AP的无干扰的主载波和多色副载波,并设计基于匹配博弈的载波和子频带分配算法为用户分配异构网络的频带资源;最后,设计基于功率控制效用值的干扰抑制的载波功率控制算法进一步抑制小区间干扰。研究结果表明,所提MCAPC方法能够提高室内多色VLC-WiFi异构网的系统吞吐量和用户的平均满意度。The dense deployment of visible light communication(VLC)access points(APS)indoors expands the capacity of the VLC-WiFi(Wireless Fidelity)system,but it leads to increase the inter cell interference(ICI).For decreasing the ICI and increasing the system throughput and mean user satisfaction,a resource allocation method of multi-color carrier allocation and power control(MCAPC)is designed to put forward in the paper.According to the VLC AP deployment location and channel characteristics,the proposed MCAPC method uses soft frequency multiplexing to determine the interference free main carrier and multi-color subcarriers for each VLC AP.Then,the carrier and subcarrier allocation algorithm based on matching game is designed to allocate the band resources for users in heterogeneous networks.Finally,a carrier power control algorithm based on utility value of power control for interference suppression is designed to further suppress the ICI.Simulation results show that the proposed method can effectively improve system throughput and increase the mean user satisfaction for the VLC-WiFi heterogeneous network.

关 键 词：异构网络 小区间干扰 多色载波 功率控制 系统吞吐量 

分 类 号：TN929.11[电子电信—通信与信息系统]