%0 Journal Article %T Bounds on Codes Correcting Periodic Errors Blockwise %A Pankaj Kr Das %J International Journal of Informatics and Communication Technology %D 2012 %I Institute of Advanced Engineering and Science (IAES) %R 10.11591/ij-ict.v2i1.1332 %X This paper presents a necessary and su cient condition on the number of paritycheck digits required for the existence of codes correcting periodic errors of di erent ordersin di erent blocks of a code. An example of such a code has also been provided. %U http://www.iaesjournal.com/online/index.php/IJICT/article/view/1332