On the capacity of binary and Gaussian channels with run-length-limited inputs

Author

Shamai, Shlomo ; Kofman, Yosef

Author_Institution

Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel

Volume

38

Issue

5

fYear

1990

fDate

5/1/1990 12:00:00 AM

Firstpage

584

Lastpage

594

Abstract

Bounds on the capacity of binary symmetric channels and additive Gaussian channels with run-length-limited two-level (binary, bipolar) inputs are presented, and their tightness is demonstrated for some cases. Stationary input sequences, which do not degrade capacity, are considered when deriving the bounds. Lower bounds on the magnetic recording density for a simple continuous-time recording model incorporating a minimal intertransition constraint are evaluated for soft and hard decisions. A superiority of about 1.5 dB in signal-to-noise ratio is observed for the soft-decision scheme

Keywords

channel capacity; codes; magnetic recording; random noise; 1.5 dB; additive Gaussian channels; binary symmetric channels; binary/bipolar inputs; codes; continuous-time recording model; hard decisions; lower bounds; magnetic recording density; minimal intertransition constraint; run-length-limited inputs; signal-to-noise ratio; soft-decision; upper bounds; Additive white noise; Binary sequences; Degradation; Gaussian channels; Interference constraints; Magnetic noise; Magnetic recording; Shape control; Signal to noise ratio; Upper bound;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.54971

Filename

54971