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구분 출원국
출원년도 ~ 키워드

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등록 재확산 부호를 이용한 주파수 선택적 변조장치 및 방법

재확산 부호를 이용한 주파수 선택적 변조장치 및 방법
이미지 확대
발명자
임인기, 박형일, 강성원, 강태욱, 형창희, 김진경, 황정환, 최병건, 김성은, 강태영, 현석봉, 김정범, 김경수, 박경환
출원번호
12853499 (2010.08.10)
공개번호
20110058591 (2011.03.10)
등록번호
8599902 (2013.12.03)
출원국
미국
협약과제
초록
A frequency selective modulation apparatus and method using re-spreading codes are disclosed. The frequency selective modulation apparatus includes: a serial-to-parallel converter receiving transmission data and performing serial-to-parallel conversion on the transmission data at a pre-set ratio; one or more sub-frequency selective spreaders selecting one spreading code by using data bits received from the serial-to-parallel converter; a majority value selection unit selecting a majority value from one or more spreading codes which have been selected by each of the one or more of the sub-frequency selective spreaders; and a first XOR logic circuit XORing an output of the majority value selection unit and a re-spreading code Wn to re-spread a frequency selective baseband to a frequency selective passband.
KSP 제안 키워드
Frequency selective, Parallel converter, Serial-to-parallel conversion, Serial-to-parallel converter, XOR logic, logic circuit, pre-set, spreading code