摘要
室内电力线通信PLC和可见光通信VLC融合系统的设计需要对融合系统的参考模型进行研究。传统的电力线通信和可见光通信融合信道的分析模型没有对融合系统的信道模型参数进行确定,因此模型只能定性地描述融合信道的一般特性。通过对典型场景下融合信道的实际测量,提出了电力线通信和可见光通信融合系统的参考模型,该模型由一小组参数决定。基于最小二乘法对模型参数进行拟合,进而得到融合信道模型参数,继而增加了融合信道模型的实用性。搭建的融合系统验证了参考模型的正确性,结果表明所提出的融合信道模型能很好地描述实测的融合信道传输特性。
The design of the indoor integrated power line communication(PLC)and visible light communication(VLC)requires study on the reference model of integrated systems.Since the traditional analytical model of the integrated channel of PLC and VLC does not determine the parameters of the channel model,it can only describe general characteristics of the channel qualitatively.We propose a reference model of the integrated PLC and VLC systems through the actual measurement of the integrated channel in the typical scenario,and the reference model is determined by a small set of parameters.The model parameters are fitted based on the least squares method,and the practicability of the integrated channel is improved by the obtained parameters.We then set up a test network to verify the correctness of the model,and the results show that the proposed model can significantly describe transfer characteristics of the hybrid system.
引文
[1]Yan Y,Ding W,Yang H,et al.The video transmission platform for the PLC and VLC integrated system[C]∥Proc of IEEE International Symposium on Broadband Multimedia Systems and Broadcasting,2015:171-175.
[2]Ma Hao,Lampe L,Hranilovic S.Integration of indoor visible light and power line communication systems[C]∥Proc of IEEE International Symposium on Power Line Communications and ITS Applications,2013:291-296.
[3]Lin Y J,Latchman H A,Lee M,et al.A power line communication network infrastructure for the smart home[J].IEEE Wireless Communications,2008,9(6):104-111.
[4]Komine T,Nakagawa M.Integrated system of white LED visible-light communication and power-line communication[J].IEEE Transactions on Consumer Electronics,2003,49(1):71-79.
[5]Amirshahi P,Kavehrad M.Broadband access over medium and low voltage power-lines and use of white light emitting diodes for indoor communications[C]∥Proc of Consumer Communications and Networking Conference,2006:897-901.
[6]Rajesh A,Nakkeeran R.Performance analysis of integrated system under impulse noise and multipath channel using Turbo coded OFDM[C]∥Proc of International Conference on Advanced Computing and Communications,2008:254-259.
[7]Alavi S E,Supa'at A S M,Idrus S M.Integrated system of visible free space optic with PLC[C]∥Proc of 2009IEEE 9th Malaysia International Conference on Communications,2009:271-275.
[8]Ding W,Yang F,Yang H,et al.A hybrid power line and visible light communication system for indoor hospital applications[J].Computers in Industry,2015,6(8):170-178.
[9]Song J,Ding W,Yang F,et al.An indoor broadband broadcasting system based on PLC and VLC[J].IEEE Transactions on Broadcasting,2015,61(2):299-308.
[10]Zimmermann M,Dostert K.A multipath model for the powerline channel[J].IEEE Transactions on Communications,2002,50(4):553-559.
[12]Tonello A M,Versolatto F,Bejar B.A top-down random generator for the in-home PLC channel[C]∥Proc of Global Telecommunications Conference(GLOBECOM 2011),2011:1-5.
[13]Mohanty S K,Giri R K.Measurement of channel characteristic by bottom-up approach for indoor PLC channel[C]∥Proc of IEEE TENCON Region 10Conference,2015:1-6.
[14]Cortes J A,Canete F J,Diez L,et al.On PLC channel models:An OFDM-based comparison[C]∥Proc of IEEE International Symposium on Power Line Communications and Its Applications,2013:333-338.
[15]Minh H L,O’Brien D,Faulkner G,et al.High-speed visible light communications using multiple-resonant equalization[J].IEEE Photonics Technology Letters,2008,20(14):1243-1245.
[16]Komine T,Nakagawa M.Fundamental analysis for visible light communication system using LED light[J].IEEE Transactions on Consumer Electronics,2004,50(1):100-107.