Folding Viterbi detector with reduced complexity for EPRML system applications

Hoon Jae Ki, Cheon Su Lee, Moon Ho Song, Soo Won Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


A folding Viterbi detector (FVD) is proposed, which has the usual state transition diagram folded with inverted states. Since most trellis-coded signals have symmetrical transition diagrams, if folded appropriately, branch metrics will appear when an add or subtract operation is carried out. In this scheme, one adder/subtractor replaces two adders. Compared with the EPR4 GVA detector, which requires eight adders, the proposed FVD requires only five adder/subtractors and the total gate count is reduced by 38% without BER performance degradation.

Original languageEnglish
Pages (from-to)330-331
Number of pages2
JournalElectronics Letters
Issue number4
Publication statusPublished - 2000 Feb 17

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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