Title :
A CMOS two-path tree search detector
Author :
Wang, Xiaodong ; Spencer, Richard R.
Author_Institution :
California Univ., Davis, CA, USA
Abstract :
Two-path tree search (TBTS) is a detection algorithm combining a decision-feedback equalizer (DFE) and a two-path tree search estimator. This sub-optimal tree search overcomes the exponential increase in hardware complexity with the tree length in a fixed-delay tree search (FDTS) structure. An adaptive mixed-signal CMOS TPTS detector is presented in this paper. The IC occupies 2.77 mm by 2.44 mm (including the bonding pads) in a 0.5 μm CMOS process. It performs about 0.8 dB better than a conventional DFE in a disk drive read channel
Keywords :
adaptive signal detection; decision feedback equalisers; disc drives; hard discs; mixed analogue-digital integrated circuits; tree searching; 0.5 micron; adaptive mixed-signal CMOS; decision-feedback equalizer; detection algorithm; disk drive read channel; fixed-delay tree search; hardware complexity; sub-optimal tree search; two-path tree search detector; CMOS integrated circuits; CMOS process; Decision feedback equalizers; Detectors; Error correction; Finite impulse response filter; Hardware; Output feedback; Switches; Voltage;
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.1999.777299
