Title :
Some periodic time-varying convolutional codes with free distance achieving the Heller bound
Author :
Hu, Q. ; Pérez, L.C.
Author_Institution :
Lucent Technol., Mount Olive, NJ, USA
Abstract :
Some periodic time-varying convolutional codes with free distance greater than the best known time-invariant code of the same rate and total encoder memory are presented. These codes also achieve the Heller bound for the given code parameters
Keywords :
convolutional codes; Heller bound; code parameters; code rate; free distance; periodic time-varying convolutional codes; total encoder memory; Convolutional codes; Hamming distance; Hamming weight; Time varying systems; USA Councils; Upper bound;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.936110
