Title :
Constrained block codes for class-IV PRML channels
Author :
Abdel-Ghaffar, Khaled A. S. ; Weber, Jos H.
Author_Institution :
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA, USA
Abstract :
We investigate sets of maximal number of fixed-length sequences that can be concatenated without violating certain constraints often required in class-IV PRML channels used in magnetic recording. PRML is a technique that combines partial-response (PR) signaling with maximum-likelihood (ML) sequence estimation in order to combat intersymbol interference and noise, which are common in high density digital magnetic storage channels. The class-IV channel processes independently the even and the odd subsequences of bits with even and odd indices, respectively
Keywords :
binary sequences; block codes; digital magnetic recording; estimation theory; maximum likelihood estimation; partial response channels; ML sequence estimation; class-IV PRML channels; constrained binary sequences; constrained block codes; fixed length sequences; high density digital magnetic storage channels; intersymbol interference; maximum-likelihood sequence estimation; noise; partial response channels; partial-response signaling; Block codes;
Conference_Titel :
Information Theory, 1995. Proceedings., 1995 IEEE International Symposium on
Conference_Location :
Whistler, BC
Print_ISBN :
0-7803-2453-6
DOI :
10.1109/ISIT.1995.531347