Title :
Free distance lower bounds for unequal error-protection convolutional codes
Author :
Danon, Tamar ; Bross, Shraga I.
Author_Institution :
BreezeCom, Tel-Aviv, Israel
Abstract :
Convolutional codes with unequal information protection are investigated. Lower bounds on the free distance of time-varying codes are derived and compared to previous bounds. The asymptotic behavior of these bounds leads to the conclusion that significant gains for the important data are attainable by enlarging the corresponding constraint length. This comes at the cost of reduced performance for the less significant data
Keywords :
convolutional codes; error correction codes; asymptotic behavior; constraint length; convolutional codes; free distance; lower bounds; time-varying codes; unequal error-protection; unequal information protection; Block codes; Concatenated codes; Convolutional codes; Costs; Encoding; Linear matrix inequalities; Protection; Sufficient conditions;
Conference_Titel :
Information Theory, 2000. Proceedings. IEEE International Symposium on
Conference_Location :
Sorrento
Print_ISBN :
0-7803-5857-0
DOI :
10.1109/ISIT.2000.866559
