Rate-k/n locally invertible convolutional encoders are defined. It is shown that a basic locally invertible encoder is minimal-basic. Local invertibility is used to re-derive Forney's (1973) upper and lower bounds on the maximum number of consecutive all zero branches in a convolutional codeword. A time-domain test for minimality of an encoder is given
Published in:
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Date of Conference: 17-22 Sep 1995