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| 2. |
- Höst, Stefan, et al.
(författare)
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Active distances and cascaded convolutional codes
- 1997
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Ingår i: [Host publication title missing]. - 0780339568 ; , s. 107-107
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Konferensbidrag (refereegranskat)abstract
- A family of active distances for convolutional codes is introduced. Lower bounds are derived for the ensemble of periodically time-varying convolutional codes.
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| 3. |
- Höst, Stefan, et al.
(författare)
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Active distances for convolutional codes
- 1999
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Ingår i: IEEE Transactions on Information Theory. - : Institute of Electrical and Electronics Engineers (IEEE). - 0018-9448. ; 45:2, s. 658-669
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Tidskriftsartikel (refereegranskat)abstract
- A family of active distance measures for general convolutional codes is defined. These distances are generalizations of the extended distances introduced by Thommesen and Justesen (1983) for unit memory convolutional codes. It is shown that the error correcting capability of a convolutional code is determined by the active distances. The ensemble of periodically time-varying convolutional codes is defined and lower bounds on the active distances are derived for this ensemble. The active distances are very useful in the analysis of concatenated convolutional encoders
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| 4. |
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| 5. |
- Höst, Stefan, et al.
(författare)
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Cascaded convolutional codes
- 1998
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Ingår i: Communication and Coding. - 0863802389 ; , s. 10-29
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 6. |
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| 7. |
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| 8. |
- Höst, Stefan, et al.
(författare)
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Nonequivalent cascaded convolutional codes obtained from equivalent constituent convolutional encoders
- 1998
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Ingår i: Problems of Information Transmission. - 0032-9460. ; 34:4, s. 291-299, s. 338-338
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Forskningsöversikt (refereegranskat)abstract
- Cascaded convolutional codes with conventional convolutional codes as constituent codes are powerful and attractive to use in communication systems where very low error probabilities are needed. This paper clearly demonstrates the dramatic effect the replacement of the inner convolutional encoder by an equivalent one could have on the cascaded convolutional code
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| 9. |
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| 10. |
- Höst, Stefan, et al.
(författare)
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On the distribution of the output error burst lengths for Viterbi decoding of convolutional codes
- 1997
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Ingår i: [Host publication title missing]. - 0780339568 ; , s. 108-108
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Konferensbidrag (refereegranskat)abstract
- The distribution of the output error burst lengths from a Viterbi decoder is of particular interest in connection with concatenated coding systems, where the inner code is convolutional. From the expurgated, random, and sphere-packing exponents for block codes an upper bound on this distribution for the ensemble of periodically time-varying convolutional codes is obtained. Finally, the distribution obtained from simulating time-invariant convolutional codes is presented
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