摘要
在多阵列可见光通信系统中,多阵列布局可同时实现通信与定位的功能,然而传统光多输入多输出(Optical Multiple-Input Multiple-Output, OMIMO)系统通过同时激活所有发射天线来提升信道容量,却导致信道间产生同频干扰,针对上述缺陷,将光广义空间调制(Optical Generalized Spatial Modulation, OGSM)技术引入OMIMO系统,提出了一种兼顾位置检索的天线选择算法,该算法通过分析接收端接收到的光照度选择实际天线组合,提升了误码性能,且位置检索具有定位功能,最后通过蒙特卡罗仿真方法分析了基于位置检索的天线选择算法与传统天线选择算法的性能差异。结果表明:当误码率达到10-3时,采用兼顾位置检索的天线选择技术,误码性能提升了3 d B,且定位误差在8 cm。
In a multi-array visible light communication system, the multi-array layout can realize the functions of communication and positioning at the same time. However, the traditional Optical Multiple-Input Multiple-Output(MIMO) system increased the channel capacity by activating all the transmit antennas at the same time, but caused co-channel interference between channels. In view of the above defects, the Optical Generalized Spatial Modulation(OGSM) technology has been introduced into the OMIMO system, and an antenna selection algorithm that takes into account position retrieval has been proposed. Finally, the performance difference between the antenna selection algorithm based on position retrieval and the traditional antenna selection algorithm is analyzed by the Monte Carlo simulation method. The results show that when the bit error rate reaches 10-3, the bit error performance is improved by 3dB and the positioning error is 8cm by using the antenna selection technology that takes into account the position retrieval.
作者
王昊
赵黎
张峰
孟祥艳
WANG Hao;ZHAO Li;ZHANG Feng;MENG Xiangyan(School of Electronics and Information Engineering,Xi'an Technological University,Xian 710021,China)
出处
《激光杂志》
CAS
北大核心
2023年第2期123-128,共6页
Laser Journal
基金
国家自然科学基金(No.12004292)
陕西省科技厅一般项目-工业领域(No.2022GY-072)
西安市科技计划项目(No.2020KJRC0040)。
关键词
多阵列布局
位置检索
光多输入多输出系统
光照度
定位误差
multi-array layout
position retrieval
optical Multiple-Input Multiple-Output system
illuminance
positioning error
作者简介
王昊(1998-),男,硕士研究生,从事无线光通信关键技术方面的研究,E-mail:13572563010@163.com;通讯作者:赵黎(1981-),女,博士,教授,硕士生导师,主要从事无线光通信关键技术方面的研究。E-mail:pilly_lily@126.com。
