本文選題：室內(nèi)光通信　切入點(diǎn)：白光LED　出處：《蘭州交通大學(xué)》2014年碩士論文

【摘要】：室內(nèi)可見(jiàn)光通信是一種新型的無(wú)線通信方式，伴隨著白光LED的快速發(fā)展，白光LED照明正在逐漸代替?zhèn)鹘y(tǒng)的照明方式。正是這種綠色、高效、節(jié)能的照明方式的出現(xiàn)，，使得室內(nèi)可見(jiàn)光通信有了物質(zhì)基礎(chǔ)�；诎坠釲ED的室內(nèi)可見(jiàn)光通信，不僅可以滿足室內(nèi)的照明需求，而且還能提供室內(nèi)的無(wú)線數(shù)據(jù)通信業(yè)務(wù)。室內(nèi)可見(jiàn)光通信具有無(wú)電磁輻射、保密性好、無(wú)需申請(qǐng)頻譜資源等優(yōu)點(diǎn)，作為室內(nèi)無(wú)線通信的一個(gè)強(qiáng)有力的補(bǔ)充，既可以實(shí)現(xiàn)在家庭、辦公場(chǎng)所與白光LED照明系統(tǒng)的整合，達(dá)到照明與通信的目的，也可以滿足在飛機(jī)機(jī)艙、醫(yī)院等對(duì)電磁輻射比較敏感的區(qū)域內(nèi)，實(shí)現(xiàn)無(wú)線通信的需求。 本論文主要對(duì)基于WDM技術(shù)的RGB-LED型可見(jiàn)光通信系統(tǒng)進(jìn)行研究。本文首先對(duì)白光LED的組成結(jié)構(gòu)、發(fā)光原理，以及在其在正常工作時(shí)的光學(xué)特性和電學(xué)特性做了較為詳實(shí)的闡述與分析。對(duì)涉及到本設(shè)計(jì)中使用的調(diào)制技術(shù)，信道模型，噪聲模型進(jìn)行了說(shuō)明，并且給出一個(gè)基于光照強(qiáng)度和接收功率的光源布局方式。ISO(國(guó)際標(biāo)準(zhǔn)化組織)給出了對(duì)于一般辦公室照明要求光照度在300勒克斯到1500勒克斯之間。所以在滿足光照度不低于300勒克斯的前提下，設(shè)計(jì)一個(gè)能夠滿足高速通信的數(shù)據(jù)傳輸系統(tǒng)。 本設(shè)計(jì)將WDM技術(shù)引入室內(nèi)可見(jiàn)光通信系統(tǒng)中，利用RGB型LED作為發(fā)射光源，使用OOK-NRZ進(jìn)行編碼調(diào)制，利用一個(gè)低成本的設(shè)計(jì)方案實(shí)現(xiàn)了整個(gè)通信系統(tǒng)的設(shè)計(jì)。在本文中，給出了整個(gè)通信系統(tǒng)的設(shè)計(jì)框圖，并對(duì)每部分的設(shè)計(jì)和選型原則進(jìn)行分析說(shuō)明。在文章的后半部分，對(duì)設(shè)計(jì)好的實(shí)驗(yàn)平臺(tái)進(jìn)行仿真與測(cè)試，給出實(shí)驗(yàn)結(jié)果,經(jīng)過(guò)測(cè)試，該傳輸系統(tǒng)可以達(dá)到設(shè)計(jì)的預(yù)期目標(biāo)，即單色最高50kHz，三色150kHz的傳輸速度。最后對(duì)實(shí)現(xiàn)結(jié)果進(jìn)行分析與總結(jié)。
[Abstract]:Indoor visible light communication is a new wireless communication mode. With the rapid development of white light LED, white light LED lighting is gradually replacing the traditional lighting mode.It is this kind of green, high-efficiency, energy-saving lighting that makes the indoor visible light communication have the material foundation.Indoor visible light communication based on white LED can not only meet the indoor lighting requirements, but also provide indoor wireless data communication services.Indoor visible light communication has the advantages of no electromagnetic radiation, good confidentiality and no need to apply for spectrum resources. As a powerful supplement to indoor wireless communication, it can realize the integration of home, office and white LED lighting system.To achieve the purpose of lighting and communication, it can also meet the needs of wireless communication in aircraft cabin, hospital and other areas sensitive to electromagnetic radiation.This thesis mainly studies the RGB-LED visible light communication system based on WDM technology.In this paper, the structure of white LED, the principle of luminescence, and the optical and electrical properties of white LED in normal operation are described and analyzed in detail.The modulation technology, channel model and noise model used in this design are described.The ISO (International Organization for Standardization) gives a light source layout based on light intensity and received power. ISO (International Organization for Standardization) shows that the illumination required for general office lighting is between 300 lux and 1500 lux.So a data transmission system which can satisfy high speed communication is designed on the premise of illuminance not less than 300 lux.In this design, the WDM technology is introduced into the indoor visible light communication system, the RGB type LED is used as the emitting light source, the OOK-NRZ is used to code and modulate, and a low-cost design scheme is used to realize the design of the whole communication system.In this paper, the design block diagram of the whole communication system is given, and the design and selection principles of each part are analyzed and explained.In the second half of the paper, the designed experimental platform is simulated and tested, and the experimental results are given. After testing, the transmission system can achieve the expected goal of the design, that is, the transmission speed of monochromatic maximum 50 kHz, tricolor 150kHz.Finally, the implementation results are analyzed and summarized.
【學(xué)位授予單位】：蘭州交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TN929.1

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