Using LED Lighting for Ubiquitous Indoor Wireless Networking

被引:27
作者
Little, T. D. C. [1 ]
Dib, P. [2 ]
Shah, K. [2 ]
Barraford, N. [2 ]
Gallagher, B. [3 ]
机构
[1] Boston Univ, Dept Elect & Comp Engn ECE, Boston, MA 02215 USA
[2] Boston Univ Coll Engn, ECE Dept, Boston, MA 02215 USA
[3] Boston Univ Coll Engn, ECE Dept, Boston, MA 02215 USA
来源
2008 4TH IEEE INTERNATIONAL CONFERENCE ON WIRELESS AND MOBILE COMPUTING, NETWORKING AND COMMUNICATIONS (WIMOB) | 2008年
关键词
Wireless networking; indoor communications; free-space optical communications; visible light LED; modulation; OOK:ON OFF Shift Keying; FSO:Free Space Optics; RF:Radio Frequency;
D O I
10.1109/WiMob.2008.57
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Wireless networking is currently dominated by radio frequency (RF) techniques. However, the soon-to-be ubiquity of LED-based lighting motivated by significant energy savings provides an opportunistic deployment of widespread free-space optical (FSO) communications. LED-based network transceivers have a variety of competitive advantages over RF including high bandwidth density, security, energy consumption, and aesthetics. They also use a highly reusable unregulated part of the spectrum (visible light). In this paper we describe results from a pilot project to demonstrate the viability of an optical free-space visible light transceiver as a basis for indoor wireless networking. Inexpensive, commercial, off-the shelf LEDs and photodiodes were used to construct two prototypes; a simplex channel as expected as a component of an asymmetric/hybrid RF-FSO system, and a full-duplex channel demonstrating the ability to isolate multiple channels. On-off keying (OOK) was applied without observable flicker in the target modulation ranges. Results indicate the viability of creating inexpensive FSO transceivers that might be embedded in commercial lighting products to support ceiling-to-floor distances of approximately 3m.
引用
收藏
页码:373 / 378
页数:6
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