Indoor Broadcasting via White LEDs and OFDM

被引：236

作者：

Elgala, Hany ^{[1
]}

Mesleh, Raed ^{[1
]}

Haas, Harald ^{[2
]}

机构：

[1] Jacobs Univ Bremen, Dept Elect Engn & Comp Sci, D-28759 Bremen, Germany

[2] Univ Edinburgh, Inst Digital Commun, Joint Res Inst Signal & Image Proc, Edinburgh EH9 3JL, Midlothian, Scotland

来源：

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2009年 / 55卷 / 03期

关键词：

Visible light communication; orthogonal frequency division multiplexing; light emitting diodes; photodiodes;

D O I：

10.1109/TCE.2009.5277966

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Recently, visible light communication (VLC) technology has been gaining attention in both academia and industry. This is driven by the progress of white light emitting diode (LED) technology for solid-state lighting (SSL) and the potential of simultaneously using such LEDs for illumination and indoor wireless data transmission. This paper provides all overview about the technology and describes the physical layer implementation of a VLC system based oil a modified version of the classical orthogonal frequency division multiplexing (OFDM) modulation technique. Besides, the paper presents a hardware prototype for short-range broadcasting using a white LED lamp. The OFDM system runs, on DSP development boards. Off-the-shelf 9 LEDs and a single photodiode (PD) are utilized to build the analog frontends. The prototype allows investigating the influence of the electrical signal-to-noise ratio (SNR), constellation order, and channel coding oil the bit-error performance. Theoretical and experimental results oil optical path loss show close match. In this context, the influence of the LED beam angle oil the horizontal covet-age is highlighted(1).

引用

页码：1127 / 1134

页数：8

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