Lg Electronics Inc.

Korea Advanced Institute of Science and Technology

Sangmi Noh

Jaehoon Chung

Dongho Cho

Sangrim Lee

Seongjae Kim

Juyong Lee

Seungwon Keum

Dangoh Kim

Dong-Ho Cho

Yun-Sik Kim

Lakju Sung

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 lens antenna apparatus includes a plurality of antenna units and a lens structure configured to change a phase of an electromagnetic wave, emitted by at least one antenna unit among the plurality of antenna units. The lens structure changes the phase such that the overall outputs from the plurality of antenna units have different radiation patterns.

Antenna apparatus including lens and communication method using lens antenna

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.

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Daejeon, South Korea

Sangmi Noh