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SAGE 알고리즘을 이용한 MIMO 채널 파라미터 추정과 분석
김주석,여봉구,최홍락,김경석,Kim, Joo-Seok,Yeo, Bong-Gu,Choi, Hong-Rak,Kim, Kyung-Seok 한국인터넷방송통신학회 2017 한국인터넷방송통신학회 논문지 Vol.17 No.5
본 논문은 다중 경로 다중입력 (Multiple-input multiple-output : MIMO) 채널에서 space alternating generalized expectation-maximization(SAGE) 알고리즘을 이용하여 채널 파라미터 추정 성능을 확인한다. 성능을 비교하기 위해 781 대역의 제주도 측정지역에서의 채널 파라미터로부터 시변 채널 환경 채널 파라미터 추정을 SAGE 알고리즘을 통해 추정하고 원본 데이터와 비교한다. 이를 통해 SAGE 알고리즘의 성능을 확인할 수 있으며 일반적인 파라미터 계산보다 SAGE 알고리즘을 통해 추정하는 것이 지연 확산(Delay Spread), 도래각 확산(Arrive of Angular Spread)이 적어 정확 측면에서 성능이 뛰어나고 안정적이다. This paper is a multi-input multi-path (Multiple-input multiple-output: MIMO) using a space-alternating generalized expectation maximization(SAGE) algorithm in the parameter channel and determine the channel estimation performance. Estimated by the algorithm, SAGE time-varying channel environment, the channel parameters estimated from the parameters of the channel measured in the island region 781 of the band in order to compare the performance and compares the original data. This allows you to check the performance of the algorithm SAGE and is highly stable to delay spread (Delay Spread), the diffusion angle of arrival (Arrive of Angular Spread) performance in terms of accuracy down through the SAGE algorithm for estimating a more general calculation parameters.
김주석 한국지역개발학회 2012 한국지역개발학회 세미나 논문집 Vol.2012 No.3
Although there are so many researchs and model projects, there are no many cases as a good sustainable urban improvement based residents participation. This study explore ways to bring-up social capacity including local administration, by researching the administration s role and systemic ordinances for working Ie·Michi Mchi Improvement Project System(IMMIPS) of Yokohama city in Japan, has similar clutural basement and administration system with Korea. Used materials are Yokomama s ordinances and japanese research papers related IMMIPS, and accumulated datas(interviews, assembly records, plan, etc.) as a consultant of Hongocho3chome District from 2006 to 2007. As the results of this research clears up the working characteristic of IMMIPS, and presents main points to institute, and to operate, systemic ordinances focused on making and official recognition of the local improvement plan by a officially recognized residents organization .