Korea Advanced Institute of Science and Technology

Samsung Electronics Co., Ltd.

Electronics and Telecommunications Research Institute

Joon Hyuk Kang

Jin Hyeock Choi

Jong Ho Bang

Byung Chang Kang

Byung Moo Lee

Nam Jeong Lee

Jin Kyu Kang

Bon Tae Koo

Young Seok Baek

Jung Ho Myung

Keon Kook Lee

Seong Ah Jeong

Dae Han Ha

A method for determining a transmission power in a multi-input multi-output (MIMO) system based on a cooperative transmission is provided. The method includes setting a power constraint condition of a transmitter and target quality information of a receiver. The method further includes determining the transmission power to be allocated to the transmitter to transmit the data to the receiver based on the power constraint condition and the target quality information.

Method for determining transmission power in MIMO system based on cooperative transmission

A node device is provided. The node device includes forming a jamming signal generation unit configured to generate a jamming signal for a target signal which is transmitted from a base station to an intended receiving device supposed to receive the signal and an unintended receiving device not supposed to receive the signal, a beamforming vector determination unit configured to determine a beamforming vector of the jamming signal based on an amplitude of a received power of the jamming signal at the intended receiving device, and a transmission unit configured to transmit the jamming signal based on the determined beamforming vector.

Apparatus and method for transmitting jamming signal

Provided is a cell search method in a wireless communication system. According to the cell search method, when detecting SSS in order to search a cell group ID in 3GPP LTE communication, it is possible to reduce the computational complexity for SSS detection by selecting the sequence group of which cross-correlation between initially grouped SSS sequences is a predetermined value or more, computing cross-correlation with the sequences in the selected sequence group, and extracting a cell group ID through detection of the SSS sequence having the highest cross-correlation.

Cell search method in wireless communication system

A servomotor controlling method and apparatus for use in two inertial systems in which the servomotor and a load are mutually connected by an elastic connection element is provided. A compensation torque value for suppressing oscillation is obtained on the basis of a torque command value for the servomotor and a motor output velocity. The compensation torque value is reflected on the torque command value to then be provided to the servomotor. Accordingly, a resilient torsional torque generated between a driving inertial system and a driven inertial system is properly corrected to thereby suppress oscillation and improve system stability.

Method and apparatus for controlling servomotor in two inertial systems

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Daejeon, South Korea

Joon Hyuk Kang