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특허 상세정보

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내보내기 페이스북 공유 카카오톡 공유

Code-rate increased compressed mode DS-CDMA systems and methods

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04J-003/16    H04J-003/22    H04J-003/06    H04B-072/16   
미국특허분류(USC) 370/468 ; 370/320 ; 370/342 ; 370/504 ; 371/043.2
출원번호 US-0636646 (1996-04-23)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Burns, Doane, Swecker & Mathis, L.L.P.
인용정보 피인용 횟수 : 81  인용 특허 : 17
초록

Introduction of discontinuous transmission in CDMA communications techniques is achieved by using selectively puncturing coded output of a convolutional encoder. By temporarily increasing the coding rate during a frame, information only fills an information part of a frame in a compressed mode, leaving an idle part of the frame in which to perform other functions, such as evaluation of other frequencies for use in handover between frequencies.

대표
청구항
▼

[ What is claimed is:] [1.] A method of code division multiple access in cellular communications, wherein information is transmitted in frames having a specific time duration, said method comprising the steps of:channel encoding a symbol stream associated with a frame to be transmitted to produce a coded symbol stream;selectively increasing a channel coding rate of said coded symbol stream to generate a compressed mode frame, wherein a compressed mode frame includes at least one first part having a time duration less than said specific time duration and ...

이 특허에 인용된 특허 (17)

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