Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Hyeon-Cheol Park

Ki-Hun Jeong

Min-seog Choi

Sang-Wook Suh

Seung-Chan Lim

Woo-Wan Wang

Seun-wan Lee

Disclosed is a 5G or pre-5G communication system to be provided so as to support a data transmission rate higher than that of a 4G communication system such as long term evolution (LTE). According to the present disclosure, a method for transmitting a signal in a communication system supporting multi-user access comprises the steps of: transmitting, to a receiving device, information indicating a codebook formed on the basis of at least two signal constellations for sparse code multiple access (SCMA) transmissions; and transmitting signals on the basis of the codebook, wherein the at least two signal constellations are generated on the basis of energy values of symbols of a pre-given mother signal constellation and sizes of the symbols of the mother signal constellation.

Method and device for transmitting signal in communication system supporting multi-user access

Fiber scanning optical probes and medical imaging apparatuses including the same are provided. The fiber scanning optical probe includes an optical fiber; an actuator attached onto the optical fiber and configured to drive the optical fiber at a driving resonance frequency; a mass provided at a side of the optical fiber and configured to control the driving resonance frequency; and a frequency separator provided on a portion of the optical fiber between the actuator and the mass, the frequency separator being configured to separate the driving resonance frequency into separate resonance frequencies.

Fiber scanning optical probe and medical imaging apparatus including the same

Growing community of inventors

Daejeon, South Korea

Hyeon-Cheol Park