Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Woo-Seok Nam

Yong-Hoon Lee

Young-Ho Jung

Seung-Hoon Nam

Eun-Seok Ko

Tak-Ki Yu

Yu-Seok Kim

Jin-Gon Joung

Won-Yong Shin

You-Kyung Oh

Woo-Hyuk Chang

An apparatus and a method for efficient resource allocation using a cognitive radio communication in Orthogonal Frequency Division Multiple Access (OFDMA)-based moving networks are provided. The method includes determining a minimum transmit power value of the MRS, which enables the internal terminal to have a receive Signal to Interference and Noise Ratio (SINR) greater than a first threshold; determining a transmit power value of the MRS by taking into account the determined minimum transmit power value; determining a transmit power value of the MRS per cellular terminal, which is transmittable at maximum while exerting interference less than a second threshold on a corresponding cellular terminal; searching one or more cellular terminals having the maximum transmittable transmit power value determined per cellular terminal greater than the determined transmit power value; and borrowing and allocating a resource allocated to the searched cellular terminal to the internal terminal.

Apparatus and method for efficient resource allocation using cognitive radio communication in orthogonal frequency division multiple access (OFDMA)-based moving networks

In a method for feeding back combination information of transmitted signals in a multiple-input multiple-output (MIMO) system using a multiple space-time block coding technique, mean square error values are computed in relation to the combination information pieces of the transmitted signals. An index of a combination having a minimum mean square error value from among the mean square error values is fed back.

Method for feeding back antenna shuffling information in a multiple-input multiple-output system using a multiple space-time block coding technique

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Daejeon, South Korea

Woo-Seok Nam