Electronics and Telecommunications Research Institute

Industry-Academic Cooperation Foundation, Yeungnam University

Kang-Il Ahn

Jae Kyun Kwon

Byung-Han Ryu

Jee Hwan Ahn

Geon Min Yeo

Kanghee Kim

Youngsuk Suh

Kyungsu Yun

Sung-Yoon Jung

Ja-Soon Jang

A transmission apparatus of a wireless light communication system using an illumination light source can maximize a rate of data transmission while maintaining a brightness adjusting function of the illumination light source. The transmission apparatus includes a dimming level input unit which receives a dimming level of the illumination light source as an input, a coder which codes original data and outputs the coded data, a dimming coder which checks the dimming level input to the dimming level input unit, generates a symbol-codeword table corresponding to the dimming level, and dimming-codes the data output from the coder, a line coder which converts the data diming-coded by the dimming coder into pulse signals.

Transmitter for wireless optical communication system using light source

Provided is a wireless position determining method and apparatus. The wireless position determining includes: a measuring unit that measures a propagation delay tap of a signal received from a transmitting end through a channel; and extractor that extracts delay spread information having various forms based on the propagation delay tap; and an obtaining and calculating unit that obtains a distance between transmission and reception ends based on the delay spread information and calculates a position of a receiving end based on the obtained distance between the transmission and reception ends.

Apparatus and method for determining position

Growing community of inventors

Daegu, South Korea

Kang-Il Ahn