Samsung Electronics Co., Ltd.

Yonsei University

Industry-academic Cooperation Foundation Gyeongsang National University

Jong Gwan Yook

Jin Kyu Han

In Ho Lee

Cheol Mun

Ju Ho Lee

Juho Lee

Young Jun Hong

Jun Ho Lee

Kun Soo Shin

Kun Kook Park

Jin Hwe Kweon

Jin Ho Choi

Young Woo Nam

Joon Hyung Shin

Gi Won Jeong

Tae Wan Koo

Yeong Hoon Noh

Ji Kwon Kim

Bo Seong Kwon

A method for repairing a damaged area of a stealth composite structure having a stealth function using a scarf patch includes the steps of diagnosing the damaged area; deriving a repair area including the diagnosed damaged area; processing the scarf patch according to the derived repair area; machining a patch hole according to the derived repair area to remove the damaged area; and coupling the scarf patch to the patch hole so that an inner wall of the patch hole and a side surface of the scarf patch face.

Scarf patch repair method for stealth composite structure

A method and an apparatus are provided for transmitting channel state information (CSI) by a terminal in a communication system. The method includes receiving a first signal from a first serving cell; receiving a second signal from a second serving cell; calculating first CSI for the first serving cell based on the first signal; calculating second CSI for the first serving cell based on the first signal; calculating first CSI for the second serving cell based on the second signal; calculating second CSI for the second serving cell based on the second signal; transmitting the first CSI and the second CSI for the first serving cell respectively; and transmitting the first CSI and the second CSI for the second serving cell respectively.

Method and apparatus for sending and receiving channel state information in multiple-input multiple-output network wireless communication systems

An aperture-coupled microstrip antenna and a manufacturing method thereof are provided. The aperture-coupled microstrip antenna includes a radiating patch including an aperture, and a ground plane disposed below the radiating patch. The aperture-coupled microstrip antenna further includes a shorting wall connecting the radiating patch with the ground plane, and a microstrip feeder configured to apply electromagnetic waves to the aperture.

Aperture-coupled microstrip antenna and manufacturing method thereof

A method and an apparatus for sending and receiving channel state information in network Multiple-Input Multiple-Output (MIMO) wireless communication systems are provided. Hybrid feedback technology is provided to transfer complete Channel State Information (CSI) to a transmitter by efficiently combining limited amounts of long-term channel information and short-term channel information are In a down link MIMO network system.

A channel condition information feedback method and apparatus are provided for a collaborative wireless communication network using a multiple input multiple output antenna system. The apparatus includes a downlink channel estimator that estimates channels of adjacent base stations, groups base stations from among the adjacent base stations that are capable of collaborative communication, and obtains a maximum singular vector to base stations belonged to a same group; and a vector selector which selects a weight vector most accurately representing the maximum singular vector and a complex variable most accurately representing the maximum singular vector in combination with the weight vector.

Data transmission method and apparatus based on joint space division multiple access technology in collaborative downlink MIMO system

A method and an apparatus for sending and receiving channel state information in network Multiple-Input Multiple-Output (MIMO) wireless communication systems are provided. Hybrid feedback technology is provided to transfer complete Channel State Information (CSI) to a transmitter by efficiently combining limited amounts of long-term channel information and short-term channel information are in a down link MIMO network system.

Growing community of inventors

Seoul, South Korea

Jong Gwan Yook