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특허 상세정보

Multiplexed coded modulation with unequal error protection

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06F-011/00   
미국특허분류(USC) 371/43 ; 375/39
출원번호 US-0627156 (1990-12-13)
발명자 / 주소
출원인 / 주소
인용정보 피인용 횟수 : 99  인용 특허 : 0
초록

Unequal error protection is provided for an HDTV signal by separately coding each one of the classes of information in the HDTV signal by using a conventional coded modulation scheme and then time-division-multiplexing the various coded outputs for transmission. In particular, each class of information is separately coded by a 4-dimensional 8-state trellis code and a uniformly-spaced (QAM) signal constellation.

대표
청구항

A method for processing an information signal, the information signal being comprised of a plurality of classes of information, the method comprising the steps of: separately coding each one of the plurality of classes of information using a separate coded modulation scheme to provide a coded output, such that one of the plurality of classes of information has more error protection than the remaining ones of the plurality of classes of information, where each one of the plurality of coded outputs comprises a plurality of signal points taken from a signal...

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