Free distance, constraint, systematic convolutional code
Electrical and Computer Engineering
A counterexample to a conjecture on the number of constraint lengths required to achieve the free distance of a rate l/n systematic convolutional code is presented.
A. Miczo and L.D. Rudolph, “A Note on the Free Distance of a Convolutional Code," Syracuse Univ., New York, Tech. Rep. SU-CIS-69-02, 1969.