Electronics and Telecommunications Research Institute

Min-Sheo Choi

Chang-Joo Kim

Myung-Sun Song

Gwangzeen Ko

Young-Jun Hong

Sung-Hyun Hwang

Sung-Yoon Jung

Jung-Sun Um

Dan-Keun Sung

Hyung-Soo Lee

Mi-Kyung Oh

Bang-Chul Jung

Cheolhyo Lee

Min-Jeong Kim

Dong-Jo Park

Ki-Ho Kil

Chang-Yong Jung

Jo-Woon Chong

A method and an apparatus for controlling transmit power of a CR device are provided. The method includes acquiring CR environment information regarding a licensed user or an unlicensed user occupying an adjacent channel or an adjacent cell of the CR device; determining a transmit power value of the CR device using the CR environment information; and generating transmit power control information including the transmit power value. The method and apparatus guarantee reliable communication of the CR device and minimize interference with the licensed user.

Transmission power control method and device for cognitive radio device

Unlike previous works with emphasis on hardware level optimization for the processing time reduction in stereo matching, the present invention provides a time efficient stereo matching method which is applicable at an algorithm level, which is compatible with and thus can be employed to any types of stereo matching implementation.

Method of time-efficient stereo matching

Provided is a communication system for ultra wide band impulse communication, and more particularly, to a communication apparatus and method that can be used in a sensor network or a low-rate wireless personal area network. To be more specific, the present research suggests a transmitter employing multi-coded bi-orthogonal pulse position modulation/demodulation and a method thereof. The transmitter of the present research provides: a serial-to-parallel converter for convening L-bit serial data to be transmitted into parallel data by performing grouping on the L-bit serial data; a multi-coder for generating a multi-coded symbol by multiplying the parallel data by total L orthogonal codes of length N; a bi-orthogonal pulse position modulator for positioning the multi-coded symbol in a predetermined pulse period and performing biorthogonal pulse position modulation; and a pulse generator for multiplying an output signal of the bi-orthogonal pulse position modulator by a predetermined pulse and outputting an output signal.

Apparatus and method for ultra wide band communication based on multi-coded bi-orthogonal pulse position modulation

Growing community of inventors

Daejeon, South Korea

Min-Sheo Choi