Some extended results on the search for good convolutional codes

@article{Chang1997SomeER,
  title={Some extended results on the search for good convolutional codes},
  author={Jinn-Ja Chang and Der-June Hwang and Mao Chao Lin},
  journal={IEEE Trans. Information Theory},
  year={1997},
  volume={43},
  pages={1682-1697}
}
We provide useful results on two classes of convolutional codes: binary codes and nonbinary codes. The best codes or the best known codes for these two classes of convolutional codes are found by computer search. Some of them are better than those found in the past. We specify these codes by their transfer function matrices, distance spectra, and information-weight spectra. Furthermore, we derive an upper bound on the free distances of binary-toM -ary codes and q-ary-to-M-ary codes. Numerical… CONTINUE READING
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