Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Jae-Yeun Yun

Yong-Hoon Lee

Myeon-Kyun Cho

Seung-Hoon Nam

Jong-Hyeuk Lee

Tak-Ki Yu

Sae-Young Chung

Yung-Soo Kim

Ho-Jin Kim

Dong-Ho Kim

Eung-sun Kim

Chan-Soo Hwang

Jihoon Choi

Jin-Gon Joung

Won-Yong Shin

Young-Seok Oh

Disclosed is a data transmission/reception method and system for minimizing intercarrier interference (ICI) in a communication system using a multicarrier. The data transmission method by a transmitter includes grouping transmission signals in units of a predetermined number of transmission signals when the transmitter has received the transmission signals, multiplying each group of the transmission signals by a transmission coding matrix, and transmitting the transmission signals multiplied by the transmission coding matrix to a receiver.

Method and system for transmitting/receiving data in communication system

An apparatus and a method for canceling interference using a space-frequency block coding in a multi-antenna system. The method includes confirming a code for coding to minimize a Pairwise Error Probability (PEP) of a transmit signal of which the PEP is maximized according to a time variation; and coding the transmit signal with the code and transmitting the coded signal via at least two antennas. Accordingly, the interference cancellation can be accomplished while lowering the complexity of the receiver without degrading the spectral efficiency.

Apparatus and method for canceling interference in wireless communication system

An apparatus and method for determining a beamforming vector in a codebook-based transmission beamforming system are provided. In a feedback method for a receiver in a codebook-based transmission beamforming system, forthcoming channel values for a forthcoming period are generated using M present and previous channel estimates. Effective channel gains for all transmission beamforming vectors included in a codebook are calculated using the forthcoming channel values. A codebook index corresponding to the maximum effective channel gains is fed back to a transmitter.

Apparatus and method for determining beamforming vector in a codebook-based beamforming system

In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.

ICI cancellation method for an OFDM system

Growing community of inventors

Bucheon-si, South Korea

Jae-Yeun Yun