Title :
A 110 MHz 350 mW 0.6 μ CMOS 16-state generalized-target Viterbi detector for disk drive read channels
Author :
Sridharan, Srinath ; Carley, L. Richard
Author_Institution :
Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
Abstract :
An architecture for efficiently implementing linear and nonlinear Viterbi detectors for magnetic read channels is presented. By employing generalized noiseless target values for the Viterbi trellis, the detector is better able to adapt to the actual binary data storage channel and less equalization is needed, resulting in a significant reduction in the probability of error. An implementation example is presented for the case of a 16-state Viterbi detector having a capability of handling any noiseless target of up to 5 adjacent non-zero values. In 0.6 μm 3.0 V CMOS process, the design has been implemented with a die area of 9 mm2 consuming under 350 mW of power when operated at 110 MHz
Keywords :
CMOS integrated circuits; Viterbi detection; disc drives; error statistics; hard discs; mixed analogue-digital integrated circuits; trellis codes; 0.6 micron; 110 MHz; 3.0 V; 350 mW; CMOS; Viterbi trellis; adjacent non-zero values; binary data storage channel; die area; disk drive read channels; error probability; generalized noiseless target values; generalized-target Viterbi detector; magnetic read channels; Additive white noise; CMOS process; Detectors; Disk drives; Gaussian noise; Intersymbol interference; Maximum likelihood detection; Memory; Noise reduction; Viterbi algorithm;
Conference_Titel :
Custom Integrated Circuits, 1999. Proceedings of the IEEE 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-5443-5
DOI :
10.1109/CICC.1999.777300
