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내보내기 페이스북 공유 카카오톡 공유

Method and apparatus for using Walsh shift keying in a spread spectrum communication system

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04B-007/216    H04J-013/02    H04L-027/28   
미국특허분류(USC) 370/209 ; 370/335 ; 375/209 ; 375/261
출원번호 US-0358425 (1994-12-19)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 183  인용 특허 : 18
초록
▼

Method and apparatus for generating orthogonally encoded communication signals for communication system subscribers using multiple orthogonal functions for each orthogonal communication channel. Digital data symbols for signal recipients are M-ary modulated using at least two n-length orthogonal modulation symbols, which are generally Walsh functions normally used within the communication system. These symbols are provided by a modulation symbol selector (124) typically from one or more code generators (126, 128), and the modulation is such that M equals...

대표
청구항
▼

A spread spectrum communication system, comprising: a plurality of gateway type base stations each including at least one communication signal transmitter that transmits signals comprising data symbols to active system users, comprising: a plurality of function generating means each for providing at least one of a plurality of orthogonal functions of a plurality of orthogonal functions of length n having a predefined recursive relationship among each other; means for selecting N of said orthogonal functions for each active system user, N being a power of...

이 특허에 인용된 특허 (18)

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