EXPANSION PARTIAL RESPONSE MAXIMUM LIKELIHOOD METHOD (EPRML)-CHANNEL-DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain an expansion partial response maximum likelihood method (EPRML)-channel-device capable of making a code as efficient as possible by using a specific trellis code having three-byte error error propagation on the basis of an EPRML minimum distance channel-error. ;SOLUTION: An encoder decoder 12 receives an input signal and performs implement execution and realization of rate information ratio 24/26-trellis trellis code having 3-byte error error propagation on the basis of an EPRML minimum distance channel-error. A precoder 14 performs precoding processing onto a coded signal from the coder 12. An expansion partial response(EPR) channel 16 is constructed so as to receive an output from the precoder 14, and a detector 18 detects an output of the channel 16. A decoder 20 is constructed so as to apply inverse processing or inverse operation to the coder 12.;COPYRIGHT: (C)2001,JPO