[특허]Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof

Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-011/08
출원번호	US-0489677 (1990-03-07)
발명자 / 주소	Viterbi Andrew J. (La Jolla CA)
출원인 / 주소	Qualcomm Incorporated (San Diego CA 02)
인용정보	피인용 횟수 : 76 인용 특허 : 0

초록 ▼

An encoder and decoder for generating and decoding convolutional codes of enhanced orthogonality. In an exemplary embodiment the encoder includes a K bit length shift register for receiving an input serial stream of information bits and providing for each input bit a K bit parallel output to an orthogonal code sequence generator where one of 2K-1 symbol sequences is generated with each symbol sequence of a K-2 symbol length. The encoded symbol stream is decoded using an orthogonal function generator driven by a K-2 binary counter to generate all possible symbol sequences for comparison with each received symbol sequence. The output of the comparison is Viterbi decoded to provide the original stream of information bits. Corresponding methods of encoding the information bits and decoding of the symbol sequences are included.

대표청구항 ▼

A data encoder comprising: a register having an input for receiving an input sequence of data bits, and having a first through a K output at which is provided a respective one of the last K received bits of said input sequence of data bits; an input EXCLUSIVE OR gate having a pair of inputs respectively coupled to said first and K outputs of said register, and an output; an orthogonal function sequence generator having K-2 inputs each coupled to a respective one of a second through a K-1 output of said register, and having an output; and an output EXCLUSIVE OR gate having a pair of inputs respectively coupled to said first EXCLUSIVE OR gate output and said generator output, and an output.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof 원문보기

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연합인증

Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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