Korea Advanced Institute of Science and Technology

Lg Electronics Inc.

Other

Pukyong National University

Dongho Cho

Jaehoon Chung

Sangmi Noh

Dangoh Kim

Juyong Lee

Seungwon Keum

Sangrim Lee

Seongjae Kim

Chun Taek Rim

Nam Pyo Suh

Soon Heung Chang

Jung Goo Cho

Kyung-Soo Kim

Gyu Hyeong Cho

Ju Yong Lee

Yong San Yoon

Gye-Tae Gil

Daehee Park

Yong Hoon Jeong

Chuntaek Rim

Guho Jeong

Changbae Yoon

Gu Ho Jeong

Seongjeub Jeon

In a wireless communication system, a method for transmitting a transport block of a device and a device using the method are provided. The method is characterized by transmitting a transport block to another device, receiving measured channel information from the other device, and determining whether to retransmit the transport block, on the basis of a difference value between channel information estimated during transmission of the transport block and the measured channel information.

Method for transmitting data of device in wireless communication system, and device using same method

A method for estimating a phase noise by a wireless device in a wireless communication system according to an embodiment of the present disclosure comprises the steps of: receiving a pre-configured pilot signal and a phase tracking reference signal (PTRS); calculating a first phase noise on the basis of the pre-configured pilot signal; calculating a common phase error (CPE) on the basis of the phase tracking reference signal (PTRS); and estimating a phase noise (PN) on the basis of the first phase noise and the common phase error (CPE). The PN is estimated through interpolation based on a specific reference point, and the specific reference point is based on the first phase noise and the CPE.

Method and apparatus for estimating phase noise in wireless communication system

A divider for dividing a radio signal includes an input port, a plurality of output ports and a cavity having one surface coupled to the input port and other surface coupled to the plurality of output ports. The other surface is formed as a curved surface, and the plurality of output ports is disposed on the other surface at certain intervals. The side of the cavity is slantly formed from the one surface to the other surface at a certain angle. The distances between the input port and the plurality of output ports is the same.

Divider for dividing wireless signals in a wireless communication system and a wireless device using the same

A method of calibrating an array antenna in a wireless communication system includes a first step of transmitting a radio signal through a first antenna and a second antenna determined among a plurality of antennas included in the array antenna, a second step of measuring the radio signal through a specific coupling antenna of a plurality of coupling antennas adjacent to the plurality of antennas, a third step of estimating an error of the second antenna based on a result of the measurement of the radio signal, and a fourth step of calibrating the second antenna based on the error.

Method for calibrating an array antenna in a wireless communication system and apparatus thereof

In an N-port pattern/polarized antenna device, two-type antenna elements are configured to have a radiation pattern to use a spherical vector wave mode with at least N orders, the antenna elements being arranged at intervals not larger than a half wavelength between them. The antenna elements comprise electric field antennas with a radiation pattern distributed in an even mode among the spherical vector wave mode, and magnetic field antennas with a radiation pattern distributed in an odd mode, the electric field antennas and the magnetic field antennas being integrated to face a different direction, each other.

Pattern/polarized antenna device and beamforming method

The present disclosure relates to a load-segmentation-based 3-level inverter and method for controlling same. Three-level inverter includes: multiple capacitors charged with voltages divided from a DC input voltage; top switch having one end connected with positive terminal of one of multiple capacitors; bottom switch having one end connected with negative terminal of one of multiple capacitors; multiple legs each including a first switch connected to the other end of top switch and a second switch connected to the other end of bottom switch with the first and second switches connected; multiple diodes connected in series forwardly from the other end of bottom switch to the other end of top switch and having interconnect points connected to a contact between the multiple capacitors; and multiple loads having connected terminals at a contact between the first and second switches of each of the legs and a contact between the multiple diodes.

Load-segmentation-based 3-level inverter and method of controlling the same

An ultra slim power supply device for supplying power to an electric vehicle in a contactless manner includes at least one power supply track buried in a road. Each power supply track includes a plate-shaped magnetic core extending along the road, a plate or strip shaped magnetic field generator arranged above the magnetic core through which an alternating current is supplied to generate a magnetic field, a plate or strip shaped insulating body positioned between the magnetic core and the magnetic field generator to isolate them from each other, and a housing for enclosing the magnetic core, the magnetic field generator and the insulating body.

Ultra slim power supply device and power acquisition device for electric vehicle

It is provided a power supply device and a power acquisition device for an electromagnetic induction-powered electric vehicle that increase a power transfer efficiency by maximizing a lateral deviation tolerance and by minimizing a gap between the power acquisition device and the power supply device while preventing the power acquisition device from colliding with an obstacle present on a road and being damaged by the collision.

Power supply device, power acquisition device and safety system for electromagnetic induction-powered electric vehicle

Growing community of inventors

Seoul, South Korea

Dongho Cho