Samsung Electronics Co., Ltd.

Osong Medical Innovation Foundation, Korea University Research and Business Foundation

Korea University Industrial Academic Collaboration Foundation

Seok-Hwan Park

Soon-Young Yoon

Sung-Ho Lee

Keun-Chul Hwang

In-Kyu Lee

Jin-Woo Kim

Chae-Man Lim

Sung-Rae Cho

A method for estimating location of an electronic device is provided. The method includes collecting from a transmitter, transmitter information including time information that is proportional to distance between the electronic device and the transmitter; obtaining location information of the electronic device at a point where the transmitter information is collected; and transmitting the transmitter information and the location information to a server to be used to estimate the location of the transmitter.

Method for estimating location, and electronic device and server thereof

Provided is an apparatus and method for transmitting a channel sounding signal from a user terminal in a multiple antenna system. In the method, a channel for each of a plurality of antennas is estimated. The receiving signal power of each of the antennas is calculated using the channel information obtained through the channel estimation. The antenna with the highest RX signal power is selected. Therefore, it is possible to enhance the signal reception performance of the user terminal.

Apparatus and method for transmitting channel sounding signal in wireless communication system

An apparatus and a method for determining an optimum integer perturbation vector of a low complexity in a multiple antenna system include a transmitter that transmits data using an optimum integer perturbation vector of a low complexity in a multiple antenna system includes a module pre-processor, a shift pre-processor, and a precoder. The modulo pre-processor adds an integer perturbation vector to a transmission signal vector. The shift pre-processor phase-shifts a pseudo inverse matrix of a channel matrix using a phase angle. The precoder precodes a transmission signal vector perturbed by the integer perturbation vector using the phase-shifted pseudo inverse matrix of the channel matrix.

Apparatus and method for determining optimum integer perturbation vector of low complexity in multiple antenna system

Growing community of inventors

Hanam-si, South Korea

Seok-Hwan Park