格基约减技术在可见光MIMO通信系统中的应用  

Application of lattice basis reduction techniques in visible light MIMO communication system

作　　者：陈超 邵宇丰[1,2] 王安蓉 胡文光[1] 柳海楠 李文臣 杨林婕 张颜鹭 CHEN Chao;SHAO Yufeng;WANG Anrong;HU Wenguang;LIU Hainan;LI Wenchen;YANG Linjie;ZHANG Yanlu(College of Electronics and Information Engineering,Chongqing Three Gorges University,Chongqing 404100,China;College of Information Science and Engineering,Jiaxing University,Jiaxing Zhejiang 314001,China)

机构地区：[1]重庆三峡学院电子与信息工程学院,重庆404100 [2]嘉兴大学信息科学与工程学院,浙江嘉兴314001

出　　处：《光通信技术》2025年第1期6-11,共6页Optical Communication Technology

基　　金：国家自然科学基金项目(61107064)资助;重庆市教委科学技术研究计划重大资助项目(KJZD-M201901201)资助;重庆市三峡库区地质环境监测与灾害预警重点实验室开放基金重大项目(ZD2020A0104)资助。

摘　　要：针对室内多输入多输出可见光通信系统中收发端密集化布局可能引发的信道间强相关性问题,进而产生信道间干扰,严重影响通信质量。为了应对这一挑战,提出将格基约减技术应用于室内可见光通信系统中。通过实施对可见光信道的约减操作,以降低信道间的相关性,并应用该约减后的信道矩阵,结合迫零准则和最小均方误差准则,在发射端进行预编码设计。仿真实验结果表明:应用格基约减技术可以有效改善室内可见光信道正交性,且收发机数目越多,信道相关性改善效果越明显;而应用迫零准则和最小均方误差准则,可以有效提升系统误码率性能。Regarding the strong correlation between channels that may be caused by dense layouts of transmitters and receivers in indoor multiple-input multiple-output visible light communication systems,which can lead to inter-channel interference and significantly affect communication quality,a challenge that is addressed by proposing the application of lattice basis reduction techniques to indoor visible light communication systems.By implementing a reduction operation on the visible light channel to reduce the correlation between channels,and applying the reduced channel matrix,combined with the zero forcing criterion and the minimum mean square error criterion,precoding design is carried out at the transmitting end.The simulation experiment results show that the application of lattice reduction technology can effectively improve the orthogonality of indoor visible light channels,and the more transceivers there are,the more obvious the improvement effect on channel correlation.The application of zero forcing criterion and minimum mean square error criterion can effectively improve the system's error rate performance.

关 键 词：可见光通信 信道 格基约减 预编码 误码率 

分 类 号：TN929.12[电子电信—通信与信息系统]