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Proceedings Paper

Indoor infrared wireless communication system based on Ethernet network
Author(s): Xin Yang; Mali Gong; Kai Zhang; Haitao Zhang; Ping Yan; Wei Jin; Feng Jiang; Yu Meng; Shanshan Zou
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Paper Abstract

In this paper, we present an infrared wireless indoor communication system that bases on Ethernet network. The bit rate of Ethernet is 10Mbps, but after Manchester coding, in the physical layer the actual bit rate is 20Mbps. In our designs, the transmitter uses laser diodes (LDs). The transmitter consists of differential input circuit, LD driver circuit. The receiver consists of a coated truncated spherical concentrator whose field of view (FOV) is 40 degree, a large area Si PIN photo-detector followed by transimpedance amplifier, second-stage amplifier, low-pass filter (LPF), high-pass filter (HPF), limiting amplifier and differential output circuit. The network is constructed as a base-terminals configuration and two transit wavelengths are used for base and terminals respectively to avoid collision. Experimental testing was conducted in a room with size 5m × 5m × 3m and the network could work well.

Paper Details

Date Published: 6 December 2002
PDF: 8 pages
Proc. SPIE 4873, Optical Wireless Communications V, (6 December 2002); doi: 10.1117/12.455497
Show Author Affiliations
Xin Yang, Tsinghua Univ. (China)
Mali Gong, Tsinghua Univ. (China)
Kai Zhang, Tsinghua Univ. (China)
Haitao Zhang, Tsinghua Univ. (China)
Ping Yan, Tsinghua Univ. (China)
Wei Jin, Tsinghua Univ. (China)
Feng Jiang, Tsinghua Univ. (China)
Yu Meng, Tsinghua Univ. (China)
Shanshan Zou, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4873:
Optical Wireless Communications V
Eric J. Korevaar, Editor(s)

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