Electronics and Telecommunications Research Institute

Samsung Electronics Co., Ltd.

Yonsei University

Min Sik Seo

Dong Seung Kwon

Young Seog Song

Choongil Yeh

Jiwon Kang

Chungyong Lee

Jung-Hyun Kim

Byung-Jae Kwak

Wooram Shin

Ji Hung Kim

Hong-Yeop Song

Joondoo Kim

Joon-doo Kim

Mi-Young Nam

Provided are a transmitting apparatus and a transmitting method in a multiple input multiple output system. A power allocation controller includes a block Tomlinson-Harashima precoder (BTHP) that precodes and outputs data to be transmitted to each user in a nonlinear scheme. The BTHP removes and outputs inference signals from data for each user based on the channel information that is fed back from the users. The data for each user output from the BTHP are allocated with power by the power allocation controller. The power allocation controller calculates power allocation parameters so that receiving minimum distances at receiving ends for each user that receive data through the MIMO antennas are the same, and allocates the calculated parameters to data for each user.

Transmitting apparatus in multiple input multiple output system

A method for a transmitting terminal in a multi-user multi-antenna environment to perform precoding includes: receiving feedback information from a plurality of receiving terminals; estimating a channel between the transmitting terminal and the plurality of receiving terminals by using the feedback information; and generating a plurality of transmission symbols by applying a first nonlinear precoding method and a second nonlinear precoding method to a plurality of symbols and the estimated channel to be transmitted to the plurality of receiving terminals. The first nonlinear precoding method is used to eliminate interference between subchannels of the same receiving terminal, and the second nonlinear precoding method is used to eliminate interference between the receiving terminals.

Precoding method and device

Disclosed is a decoding method and device for low density parity check codes using dynamic scheduling. The low density parity check codes are sequentially decoded, and the messages are scheduled in the descending order of the difference between values before and after updating the message transmitted from the variable node to the check node.

Method for decoding using dynamic scheduling scheme for low density parity check codes and apparatus thereof

Growing community of inventors

Daejeon, South Korea

Min Sik Seo