Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Hee-Seong Yang

Joo-Hwan Chun

Sang-Hyouk Choi

Ji-Yun Seol

Yong-hoon Kim

Yong-Hoon Kim

Se-Min Kwak

A method for receiving a signal by using M multiple beams in a multi-antenna system including N antenna elements, is provided in and embodiment of the present application. The method includes setting, by M beams, a beam direction for the M beams and a modulation frequency for frequency modulation of a beam response and generating the M beams according to the beam direction and the modulation frequency set by the beams. M beam responses are generated for a receiving signal by using the generated M beams and the generated M beam responses are frequency modulated by using the modulation frequency set by the beams. The frequency-modulated M beam responses are band-pass filtered so as to separate the M beam responses and the separated M beam responses are respectively demodulated.

Method and device for transmitting and receiving signal by using multiple beams in wireless communication system

One or more embodiments provide a method for controlling array antenna device in a base station (BS) in a communication system. The method includes determining whether to perform a calibration operation for BSs while operating in one of a normal mode and an interference control mode. The method also includes transiting from the one of the normal mode and the interference control mode to a calibration mode based on the determining result of whether to perform the calibration operation for the BSs. A reference antenna among antennas included in the array antenna device is used in all of the normal mode, the interference control mode, and the calibration mode.

Apparatus and method for controlling array antenna device in communication system

A beamforming method is provided. The beamforming method includes determining different beams for pieces of user equipment based on channel information fed back from the pieces of user equipment, predicting beam qualities of the pieces of user equipment for the beams, determining whether the beam qualities satisfy Quality of Service (QoS) for the pieces of user equipment, generating a wide nulling beam by applying wide nulling to a second beam having a side lobe acting as interference against one first beam, when the beam quality of the first beam does not satisfy the QoS; predicting beam qualities for the beams including the wide nulling beam instead of the second beam, and simultaneously communicating with the user equipment through the beams including the wide nulling beam instead of the second beam, when the beam qualities for the beams including the wide nulling beam instead of the second beam satisfy the QoS.

Beamforming method and apparatus for serving multiple users

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Seoul, South Korea

Hee-Seong Yang