Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission

M. Fukuda, S. Ohta, K. Yamaguchi, T. Tsuda, T. Gotohda, H. Gambe, S. Miyoshi, Y. Awata

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    An approach to large-scale-integration (LSI) implementation of the 2B1Q echo canceler for an integrated services digital network (ISDN) basic access interface is described. A hybrid architecture, using both analog and digital processing, is adopted for LSI implementation with a moderate circuit scale. Techniques using baud-rate sampling, such as √f automatic gain control (AGC) equalization by power detection, timing extraction by peak estimation and a two-stage echo canceler with divided tables, are introduced to the system. Performance characteristics are also confirmed by computer simulation and a prototype system.

    Original languageEnglish
    Pages (from-to)233-238
    Number of pages6
    JournalUnknown Journal
    Volume1
    Publication statusPublished - 1989

    Fingerprint

    Subscriber loops
    LSI circuits
    large scale integration
    Voice/data communication systems
    echoes
    automatic gain control
    Gain control
    Digital signal processing
    computerized simulation
    sampling
    prototypes
    time measurement
    analogs
    Sampling
    Networks (circuits)
    Computer simulation

    ASJC Scopus subject areas

    • Media Technology

    Cite this

    Fukuda, M., Ohta, S., Yamaguchi, K., Tsuda, T., Gotohda, T., Gambe, H., ... Awata, Y. (1989). Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission. Unknown Journal, 1, 233-238.

    Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission. / Fukuda, M.; Ohta, S.; Yamaguchi, K.; Tsuda, T.; Gotohda, T.; Gambe, H.; Miyoshi, S.; Awata, Y.

    In: Unknown Journal, Vol. 1, 1989, p. 233-238.

    Research output: Contribution to journalArticle

    Fukuda, M, Ohta, S, Yamaguchi, K, Tsuda, T, Gotohda, T, Gambe, H, Miyoshi, S & Awata, Y 1989, 'Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission', Unknown Journal, vol. 1, pp. 233-238.
    Fukuda M, Ohta S, Yamaguchi K, Tsuda T, Gotohda T, Gambe H et al. Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission. Unknown Journal. 1989;1:233-238.
    Fukuda, M. ; Ohta, S. ; Yamaguchi, K. ; Tsuda, T. ; Gotohda, T. ; Gambe, H. ; Miyoshi, S. ; Awata, Y. / Approach to LSI implementation of a 2B1Q coded echo canceler for ISDN subscriber loop transmission. In: Unknown Journal. 1989 ; Vol. 1. pp. 233-238.
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    AU - Miyoshi, S.

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