In the visible light (VL) communication based on the multicolor channel between colored LEDs and photodiode, a uniform performance on color channel may be desired, and VL communication services using multiple color channels should be attained by only one VL receiver. However it has been known that the received signal has the severe color distortion by the receiver performance variation on multicolor channels since photodiode produce more electrical current on red color than on green or blue color channel. In this paper we estimate the compensation extent of the color distortion in advance by color map and utilize the optimal VL transceiver circuit for distortion-less VL communication in the multicolor VL channel. We can see that the conventional technique without any compensation function of color distortion effect meets a failure in the color VL communication trial because of the different VL communication distance on each color VL channel, but the proposed scheme has no distortion due to the performance variation of each color VL channel in the overall range of communication distance.
The conventional visible light (VL) communication signals based on the LED array and photodiode severely decreases at the far away receiving point in the VL channel by the path loss effect and the insufficient compensation capability of the receiver, which results in failure of long-range VL communication for smart indoor service. In this paper, we consider the long-range VL communication technique that the compensation extent of the path loss distortion provides in advance by threshold map, and utilizes the optimal transceiver circuit for long-range VL communication. And so we can see that the proposed long-range VL communication technique overcomes the path loss problem through the compensation effect from utilizing the optimal threshold voltages into VL receiver, and attains the success of longrange VL communication test in the overall range from zero to 1070 cm distance.
The conventional visible light (VL) communication signals based on the LED array and photodiode severely decreases at the far away receiving point in the VL channel by the path loss effect and the insufficient compensation capability of the receiver. In this paper, we consider the wide-range VL communication technique that the compensation extent of the path loss distortion provides in advance by threshold map, and the optimal receiver circuit with compensation utilizes for VL communication.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.