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시변 페이딩 채널에서의 부호화된 MIMO-OFDM 시스템을 위한 저 복잡도 LMMSE 반복수신기
신우람(Wooram Shin),임광재(Kwang Jae Lim),권동승(Dong Seung Kwon) 대한전자공학회 2010 대한전자공학회 학술대회 Vol.2010 No.6
In orthogonal frequency division multiplexing (OFDM) transmission, the time-varying effect gives rise to inter-carrier interference (ICI) degrading error performance due to orthogonality destruction, particularly, the influence of ICIs is more poignant when deploying multiple antennas since they are generated in proportion to the number of transmit antennas. In order to resolve this problem, we propose linear minimum mean square error (LMMSE) iterative receivers which provide good performance closed to matched filter bound with considerable computational complexity reduction.
넓은 동적범위를 가지는 픽셀 수준 광집적시간 제어형 씨모스 디지털 픽셀 이미지 센서
신우람(Wooram Shin),구경모(Kyungmo Koo),권민우(Minwoo Kwon),천지민(Jimin Cheon) 한국정보기술학회 2015 Proceedings of KIIT Conference Vol.2015 No.6
본 논문에서는 넓은 동적범위 (WDR: wide dynamic range)를 가지는 픽셀 수준 광집적시간 제어형 씨모스 디지털 픽셀 이미지 센서를 제안한다 This paper proposes a CMOS digital pixel image sensor with light integration time control for wide dynamic range (WDR).
김근영,김광선,명정호,윤찬호,신우람,김철순,고영조,문성현,김경표,김태중,Kim, Keunyoung,Kim, Kwang Seon,Myung, Jungho,Yoon, Chanho,Shin, Wooram,Kim, Cheulsoon,Ko, Young Jo,Moon, Sunghyun,Kim, Kyeongpyo,Kim, Tae Joong 한국전자통신연구원 2019 전자통신동향분석 Vol.34 No.1
The capacity of wireless communications has been considered to be restricted by their fundamental limits, which were first formulated by Shannon in 1948. These limits are for the communication environment that is composed of a transmitter and receiver pair. However, there are usually more than one simultaneously communicating pairs in the environment. In such cases, the capacity is not known. Moreover, performance requirements have been diversified with the development of technology. We believe that wireless communication technologies will eventually progress toward limitless connections. Various wireless transmission and access technologies are introduced in order to overcome their limitations.