摘要
In order to use white light emitting diode(LED) as a lighting source and communication part, a new modulation scheme called reverse dual header pulse interval modulation(RDH-PIM) is proposed for indoor visible light communications based on the analyses of the structures of on-off keying(OOK), pulse position modulation(PPM), digital pulse interval modulation(DPIM) and dual header pulse interval modulation(DH-PIM). After analyzing and comparing the symbol structure, bandwidth requirement and average transmission power of different modulation methods, the slot error rate is derived. Simulation results show that OOK has the minimum bandwidth, while RDH-PIM has the highest average transmission power and its bandwidth efficiency is obviously better than those of PPM and DPIM. Hence, RDH-PIM is superior in optical wireless communication systems.
In order to use white light emitting diode （LED） as a lighting source and communication part, a new modulation scheme called reverse dual header pulse interval modulation （RDH-PIM） is proposed for indoor visible light communications based on the analyses of the structures of on-off keying （00K）, pulse position modulation （PPM）, digital pulse interval modulation （DPIM） and dual header pulse interval modulation （DH-PIM）. After analyzing and comparing the symbol structure, bandwidth requirement and average transmission power of different modulation methods, the slot error rate is derived. Simulation results show that OOK has the minimum bandwidth, while RDH-PIM has the highest average transmission power and its bandwidth efficiency is obviously better than those of PPM and DPIM. Hence, RDH-PIM is superior in optical wireless communication systems.
基金
supported by the National Natural Science Foundation of China(No.61371113)
the Ministry of Transport Application Foundation Research Project(No.2013-319-825-110)
the Graduate Research and Innovation Plan Project of the Universities of Jiangsu Province(No.CXZZ13_0689)
the Graduate Research and Innovation Plan Project of Nantong University(No.YKC13001)
