Ştefan Stăncescu and Victor Soare
Department of Applied Electronics and Information Technology, Faculty of Electronics and Telecommunications
"Politehnica" University of Bucharest, 313 Splaiul Independentei, Bucharest, ROMANIA
e-mail: stst@elia.pub.ro; victors@go.ro
| Abstract | Article
(full text, only for subscribers) |
Software simulations are presented for the magnetic and optical recording channels, to illustrate performances measured in bit error rate (BER) dependence on signal to noise rate (SNR) characteristics of recording digital sequences, calculated for equalized partial response channels followed by Viterbi detection versus classical methods. A software simulator is used, specially designed to assist signal-processing stages in magnetic and optical recording channels. The simulator includes the concept of partial response channels, channel equalization and detection algorithms, applied to new and classical methods of recording. BER characteristics are simulated for peak detection/Viterbi algorithm, classical/PR4/EPR4 recording channels, with/without equalization.
Keywords: digital recording, Viterbi detection, simulation
Dr. Ştefan Stăncescu is an Associate Professor at the "Politehnica" University of Bucharest, where he is in charge of the Computing Systems Engineering teaching section of Electronics and Telecommunication Faculty, Applied Electronics and Information Engineering Department. Born in Slatina, in 1949, he obtained the Engineering Diploma in Electronics from the Polytechnical Institute of Bucharest in 1972, and the Ph. D in Applied Electronics from the same Institute in 1986. He is involved in research projects regarding memory subsystem architectures in computer and network systems, with several registered patents in the domain. He is member of IEEE, Computer and Magnetic Societies.
Victor Soare is currently MD student at the "Politehnica" University of Bucharest, Computing Systems Engineering teaching section, Electronics and Telecommunication Faculty, Applied Electronics and Information Engineering Department. Born in Bucharest, in 1976, he obtained in 2000 the Engineering Diploma in Electronics from the "Politehnica" University of Bucharest in 2000. He is involved in several research projects regarding disk memory subsystem simulation.