Visible light(VL)plays an important role in achieving high-precision positioning and low bit error radio(BER)data communication.However,most VL-based systems can not achieve positioning and communication,simultaneousl...Visible light(VL)plays an important role in achieving high-precision positioning and low bit error radio(BER)data communication.However,most VL-based systems can not achieve positioning and communication,simultaneously.There are two problems:1)the hybrid systems are difficult to extract distinguishable positioning beacon features without affecting communication performance,2)in the hybrid systems,the lost data bits in the inter-frame gap(IFG)are hard to recover,which affects positioning and communication performance.Therefore,in this article,we propose a novel VL-based hybrid positioning and communication system,named HY-PC system,to solve the above problems.First,we propose the robust T-W mapping for recognizing specific Light Emitting Diodes(LEDs),which can provide stable LED recognition accuracy without adding extra beacon data and does not decrease the communication rate.Furthermore,we also propose the novel linear block coding and bit interleaving mechanism,which can recover the lost data bits in the IFG and improve data communication performance.Finally,we use commercial off-the-shelf devices to implement our HY-PC system,extensive experimental results show that our HY-PC system can achieve consistent high-precision positioning and low-BER data communication,simultaneously.展开更多
以条叶唇柱苣苔(Chirita ophiopogoides D Fang et W T Wang)的幼嫩叶片、种子为外植体,以MS为基本培养基,建立了条叶唇柱苣苔的组织培养和再生体系。试验结果表明:条叶唇柱苣苔叶片诱导不定芽的最佳培养基为MS+2,4-D0.5 mg/L+IAA 0.5 m...以条叶唇柱苣苔(Chirita ophiopogoides D Fang et W T Wang)的幼嫩叶片、种子为外植体,以MS为基本培养基,建立了条叶唇柱苣苔的组织培养和再生体系。试验结果表明:条叶唇柱苣苔叶片诱导不定芽的最佳培养基为MS+2,4-D0.5 mg/L+IAA 0.5 mg/L+NAA 0.2 mg/L,丛生芽分化的最佳培养基为MS+KT 1.0 mg/L+IAA 3.0 mg/L+NAA 0.5mg/L;MS+NAA 0.5 mg/L+6-BA 1.5 mg/L的培养基最适合继代,MS+IBA 2.0 mg/L+AC 0.5 mg/L培养基的生根效果最好,平均根长为4.67 cm,生根率达100%。展开更多
基金supported by the Guangdong Basic and Applied Basic Research Foundation No.2021A1515110958National Natural Science Foundation of China No.62202215+2 种基金SYLU introduced high-level talents scientific research support planChongqing University Innovation Research Group(CXQT21019)Chongqing Talents Project(CQYC201903048)。
文摘Visible light(VL)plays an important role in achieving high-precision positioning and low bit error radio(BER)data communication.However,most VL-based systems can not achieve positioning and communication,simultaneously.There are two problems:1)the hybrid systems are difficult to extract distinguishable positioning beacon features without affecting communication performance,2)in the hybrid systems,the lost data bits in the inter-frame gap(IFG)are hard to recover,which affects positioning and communication performance.Therefore,in this article,we propose a novel VL-based hybrid positioning and communication system,named HY-PC system,to solve the above problems.First,we propose the robust T-W mapping for recognizing specific Light Emitting Diodes(LEDs),which can provide stable LED recognition accuracy without adding extra beacon data and does not decrease the communication rate.Furthermore,we also propose the novel linear block coding and bit interleaving mechanism,which can recover the lost data bits in the IFG and improve data communication performance.Finally,we use commercial off-the-shelf devices to implement our HY-PC system,extensive experimental results show that our HY-PC system can achieve consistent high-precision positioning and low-BER data communication,simultaneously.
