| タイトル | A connection between block and convolutional codes |
| 著者（英） | Van Tilborg, H. C. A.; Solomon, G. |
| 著者所属（英） | Technische Hogeschool|Jet Propulsion Lab., California Inst. of Tech. |
| 発行日 | 1979-10-01 |
| 言語 | eng |
| 内容記述 | Convolutional codes of any rate and any constraint length give rise to a sequence of quasi-cyclic codes. Conversely, any quasi-cyclic code may be convolutionally encoded. Among the quasi-cyclic codes are the quadratic residue codes, Reed-Solomon codes and optimal BCH codes. The constraint length K for the convolutional encoding of many of these codes (Golay, (48, 24) QR, etc.) turns out to be surprisingly small. Thus using the soft decoding techniques for convolutional decoding, a new maximum likelihood decoding algorithm for many block codes is established. Conversely an optimal quasi-cyclic code will yield a convolutional encoding with optimal local properties and therefore with good infinite convolutional coding properties. |
| NASA分類 | CYBERNETICS |
| レポートNO | 79A52271 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/425341 |
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