Title :
A multilevel approach to the design of DC-free line codes
Author :
Calderbank, A.R. ; Herro, Mark A. ; Telang, Vivek
Author_Institution :
AT&T Bell Lab., Murray Hill, NJ, USA
fDate :
5/1/1989 12:00:00 AM
Abstract :
A multilevel approach to the design of DC-free line codes is presented. The different levels can be used for different purposes, for example, to control the maximum accumulated charge or to guarantee a certain minimum distance. The advantages of codes designed by this method over similar codes are the improved run-length/accumulated-charge parameters, higher transmission rate, and the systematic nature of the code construction. The multilevel structure allows the redundancy in the signal selection procedure to be allocated efficiently among the different levels. It also allows the use of suboptimal staged decoding procedures that have performance/complexity advantages over maximum-likelihood decoding
Keywords :
decoding; encoding; error correction codes; DC-free line codes; error correcting codes; maximum accumulated charge; minimum distance; multilevel approach; redundancy; signal selection procedure; suboptimal staged decoding procedures; Decoding; Design methodology; Magnetic recording; Magnetization; Optical fibers; Optical pulses; Optical receivers; Optical recording; Pulse circuits; Voltage;
Journal_Title :
Information Theory, IEEE Transactions on
