Iterative Viterbi algorithm: Implementation issues

    Authors

    L. Wei

    Comments

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    Abbreviated Journal Title

    IEEE Trans. Wirel. Commun.

    Keywords

    coding for wireless systems; iterative decoding; serial concatenated; codes; turbo decoding; Viterbi decoding; CONVOLUTIONAL-CODES; TURBO-CODES; DECODER; COMMUNICATION; PERFORMANCE; POWER; Engineering, Electrical & Electronic; Telecommunications

    Abstract

    We address several issues for implementing the iterative Viterbi decoder. We show that 3-bit branch metric quantization, 7- or 8-bit state metric precision, and a survivor length of five times the constraint length yields little degradation for the iterative Viterbi algorithm (IVA). Our results show that without changing the VA hardware (except adding some additional circuits), the error performance of several standard systems can be significantly improved.

    Journal Title

    Ieee Transactions on Wireless Communications

    Volume

    3

    Issue/Number

    2

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    382

    Last Page

    386

    WOS Identifier

    WOS:000220158400008

    ISSN

    1536-1276

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