Abstract:
The present invention relates to a bean operating apparatus and method for adaptively performing a beam operation in consideration of an analog beam operation environment and a service request for a terminal based on a round robbin mode in an analog beam operating apparatus for transmitting and receiving a signal in a frame unit of a structure for supporting a time division multiple mode by using a hybrid beamforming structure having the number of digital chains in a digital stage less than the number of the antennas in an analog stage. For this, analog beam is changed for a device on the other side which approves the use of the next frame when receiving a request for the use of the next frame from at least one device. Information about that the analog beam is changed for the next frame to be used by the device on the other side is transmitted to a plurality of devices.
Abstract:
대규모 MIMO-OFDM 시스템에서의채널추정방법및 장치가개시된다. 대규모 MIMO 안테나를가지는기지국, 상기기지국에속하는적어도하나의사용자단말들로구성된대규모 MIMO-OFDM 시스템에서의채널추정방법은, 상기대규모 MIMO 안테나를가지는기지국이전송한신호를수신하는단계, 상기기지국으로부터수신된신호를대상으로채널상관정보에기초하여오블리크연산자(Oblique Operator) 행렬을생성하는단계, 및스케일링팩터(scaling factor) 에기초하여상기오블리크연산자행렬을정규화하는단계를포함할수 있다.