ETRI-Knowledge Sharing Plaform

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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 디지털방송 수신성능개선을 위한 최적의 빔 선택방법 및 그를 이용한 디지털방송수신장치

디지털방송 수신성능개선을 위한 최적의 빔 선택방법 및 그를 이용한 디지털방송수신장치
이미지 확대
발명자
김주연, 김영수, 임종수, 이현, 배재휘, 이수인
출원번호
11720323 (2005.11.25)
공개번호
20080205537 (2008.08.28)
등록번호
7742538 (2010.06.22)
출원국
미국
협약과제
04MR3100, ATSC 8-VSB 고정/이동 수신용 다이버시티 수신기술개발, 임종수
초록
There are provided a method for selecting an optimal beam to improve digital broadcasting receiving performance, and a digital broadcasting receiving apparatus using the same. The method includes the steps of: a) calculating a mainpath Signal to Multipath signal and Noise Ratio (SMNR) based on a channel impulse response for a plurality of beams which are formed according to steering directions from output signals of antennas, wherein the output signal of each antenna has different phase shift according to location of antenna element; b) selecting a predetermined number of beams having a high SMNR value by comparing the calculated SMNR value for respective beam; c) calculating a mainpath Signal to Dominant Multipath signal Ratio (SDMR) based on a channel impulse response corresponding to the selected beam; and d) selecting a beam output signal having the biggest SDMR value by comparing SDMR values calculated in selecting a predetermined number of beams.
KSP 제안 키워드
Digital Broadcasting, Phase shift, antenna elements, channel impulse response(CIR), impulse response, multipath signals, signal and noise