LED-based nondirectional infrared transceiver for high-speed indoor wireless data communication

George C. K. Chen; Wei Lee New; Jianping Yao; Ronda Venkateswarlu

doi:10.1117/12.445264

18 October 2001 LED-based nondirectional infrared transceiver for high-speed indoor wireless data communication

George C. K. Chen, Wei Lee New, Jianping Yao, Ronda Venkateswarlu

Proceedings Volume 4586, Wireless and Mobile Communications; (2001) https://doi.org/10.1117/12.445264
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China

Abstract

A Line of Sight, non-directed transceiver system was designed and constructed. The transmitter is composed of two types of LEDs and are tilted at 60 degree(s) to achieve uniform light distribution up to 50 degrees across a plane. The receiver is composed of multiple silicon-pin-photodiodes, transimpedance amplifiers, bandpass filter and AGC, and has a half field of view of 60 degree. Software was written to design uniform distribution on a horizontal plane for non-directed line-of-sight system. Experimental testing was conducted in a room with size 3.4m x 5.1m x 2.6m and measured optical power shows close correspondence to the simulated power distribution. Non-return-to zero signal of certain test codes were transmitted at 34 Mbps, and collected signals indicate that the eye is widely open in the eye diagram.

Citation Download Citation

George C. K. Chen, Wei Lee New, Jianping Yao, and Ronda Venkateswarlu "LED-based nondirectional infrared transceiver for high-speed indoor wireless data communication", Proc. SPIE 4586, Wireless and Mobile Communications, (18 October 2001); https://doi.org/10.1117/12.445264

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KEYWORDS

Light emitting diodes

Transmitters

Receivers

Signal to noise ratio

Photodiodes

Eye

Transceivers

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