Title :
Revisiting the calculation of effective free distance of turbo codes
Author :
Chatzigeorgiou, I. ; Wassell, I.J.
Author_Institution :
Univ. of Cambridge, Cambridge
Abstract :
The expression for the minimum Hamming weight of the output of a constituent convolutional encoder, when its input is a weight-2 sequence is revisited. The new expression particularly facilitates the calculation of the effective free distance of recently proposed schemes, namely non-systematic turbo codes and pseudo-randomly punctured turbo codes.
Keywords :
convolutional codes; turbo codes; convolutional encoder; minimum Hamming weight; nonsystematic turbo codes; pseudo-randomly punctured turbo codes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20082781
