Title :
Trellis codes for recording
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Abstract :
The author describes a method of combining trellis-coded (or coset-coded) modulation concepts with those from the design of run-length limited coding. The method is referred to as the trellis-constrained, run-length code approach. It is shown that this approach, which introduces redundancy in the transition sequence, provides improved noise immunity and can be used in recording systems to increase the data density while maintaining data integrity, without increasing the density of transition
Keywords :
data recording; encoding; modulation; coset-coded; data density; modulation; noise immunity; recording; redundancy; run-length limited coding; transition sequence; trellis-coded; Bandwidth; Convolutional codes; Digital magnetic recording; Modulation coding; Optical recording; Redundancy; Saturation magnetization; Signal generators; Signal to noise ratio; Synchronous generators;
Conference_Titel :
Military Communications Conference, 1988. MILCOM 88, Conference record. 21st Century Military Communications - What's Possible? 1988 IEEE
Conference_Location :
San Diego, CA
DOI :
10.1109/MILCOM.1988.13460
