바이트반전 전송방식을 이용한 플리커 방지 가시광통신시스템
Flicker-Free Visible Light Communication System Using Byte-Inverted Transmission
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초록
In this paper, we newly developed a byte-inverted transmission method for flicker–free visible light communication (VLC). The VLC transmitter sends original data in the former half period of the clock, and inverted data and in the latter half period of the clock. TheVLC receiver receives the original data in the in the former half period of the clock. In this system, we used 480Hz clock that was gen-erated from the 60Hz power line. The average optical power of the LED array in the transmitter is constant, thus flicker-free, in theobservation time longer than the period of the clock that is about 2ms. This period is shorter than the maximum flickering time period(MFTP) of 5ms that is generally considered to be safe. This configuration is very useful in constructing indoor wireless sensor networks using LED light because it is flicker-free and does not require additional transmission channel for clock transmission.
Abstract
In this paper, we newly developed a byte-inverted transmission method for flicker–free visible light communication (VLC). The VLC transmitter sends original data in the former half period of the clock, and inverted data and in the latter half period of the clock. TheVLC receiver receives the original data in the in the former half period of the clock. In this system, we used 480Hz clock that was gen-erated from the 60Hz power line. The average optical power of the LED array in the transmitter is constant, thus flicker-free, in theobservation time longer than the period of the clock that is about 2ms. This period is shorter than the maximum flickering time period(MFTP) of 5ms that is generally considered to be safe. This configuration is very useful in constructing indoor wireless sensor networks using LED light because it is flicker-free and does not require additional transmission channel for clock transmission.
참고문헌 (7)
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