Title :
A novel post-processing scheme for threshold detection on d=2 optical channels
Author_Institution :
Coding & Signal Process. Dept., Data Storage Inst., Singapore, Singapore
Abstract :
In this paper, a novel post-processing scheme that significantly enhances the performance of a threshold based bit-by-bit detector on d=2 optical channel is proposed. The equalizer for this system is designed by jointly optimizing the target response and equalizer coefficients to minimize the noise and intersymbol interference (ISI) at the detector input. The bit-error-rate (BER) performance of the proposed scheme is close to the maximum-likelihood lower bound over the range of channel densities used on EFM/EFMPIus (2,10) coded channels for CD/DVD application, and it is better than that of the other schemes at all densities. The detector is simple in structure compared to the conventional partial response Viterbi schemes
Keywords :
equalisers; error statistics; intersymbol interference; maximum likelihood detection; minimisation; optical disc storage; recording; BER performance; CD/DVD application; ISI; bit error rate; equalizer; intersymbol interference; maximum-likelihood lower bound; noise minimization; optical channel; optical playback; optimization; post-processing scheme; threshold-based bit-by-bit detector; Detectors; Equalizers; Laser beams; Memory; Optical modulation; Optical noise; Optical recording; Optical signal processing; Signal processing; Viterbi algorithm;
Conference_Titel :
Global Telecommunications Conference, 2001. GLOBECOM '01. IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-7206-9
DOI :
10.1109/GLOCOM.2001.965827
