Library



An Integrated Error Control and CD-Free Code Based on Multimode Coding

Aaron P. Hughes, Ivan J. Fair
IEEE Transactions on Consumer Electronics, Vol. 51, No. 3, pp. 893-899, August 2005

Optical disk storage systems use both error control (EC) codes and dc-free constrained sequence (CS) codes in order to increase the reliability of the data read from the disk. We present a method of integrating these coding techniques in order to overcome drawbacks with the conventional manner in which these coding procedures are concatenated. Our technique is based on the principle of multimode coding. Each source word (SW) is represented by a set of complementary EC codewords (CWs), and from this set the encoder selects the EC CW that best meets the CS goals of the system. The decoding structure avoids the problem of error propagation during CS decoding by performing error correction before removing the effects of the CS code. Power spectra of encoded sequences generated by a hardware implementation have a null at 0 Hz, confirming that these coded sequences are dc-free. BER simulations demonstrate the superior performance of this combined EC and CS code on a dc-constrained noisy channel.

CONTACTS: Aaron Hughes, Ivan Fair
SUBJECTS: Error Control Coding
TYPE: Journal Publication
PUBLISHED: 2005

Download this document E0587.pdf (783kB Adobe PDF Document)


FAIR USE NOTICE: This site contains copyrighted material made available under the usual allowance for making single copies of copyrighted work for scholarly research or education. If you wish to use copyrighted material from this site for purposes that go beyond this, you must obtain permission from the copyright owner. For further information please see Copyright & Fair Use or Access Copyright. All works relied upon or used in derivative works should be cited with the full references as listed below.

©2013 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.