MMSE timing recovery using multi-channel early-late gates for analog multi-tone systems

Tsutomu Takeya, Tadahiro Kuroda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A timing recovery scheme for high-speed wireline multi tone communication systems called Analog Multi-Tone (AMT) has been proposed. An accurate timing recovery is essential to a reliable high-speed AMT system which demodulates in analog domain. However, it is difficult to apply conventional digital domain timing recovery algorithms to AMT systems because of the limitations of power consumption and area occupation. This paper proposes a new timing recovery scheme for AMT systems without high-speed high-resolution ADCs. The proposed scheme minimizing mean square error (MSE) by sign-sign least mean square (SS-LMS) algorithm successfully estimates the timing offset for timing recovery. We call the proposed scheme multi-channel early-late gates because it is an extension of conventional early-late gate. The constellation diagram of demodulated signals after timing recovery and the convergence curves of timing estimate and MSE are simulated for performance evaluation. The simulation results indicate that the proposed scheme successfully estimates the timing offset for timing recovery in AMT systems without high-speed high-resolution ADCs and complex digital processing units.

    Original languageEnglish
    Title of host publicationFinal Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010
    DOIs
    Publication statusPublished - 2010 Jun 28
    Event4th International Symposium on Communications, Control, and Signal Processing, ISCCSP-2010 - Limassol, Cyprus
    Duration: 2010 Mar 32010 Mar 5

    Publication series

    NameFinal Program and Abstract Book - 4th International Symposium on Communications, Control, and Signal Processing, ISCCSP 2010

    Other

    Other4th International Symposium on Communications, Control, and Signal Processing, ISCCSP-2010
    CountryCyprus
    CityLimassol
    Period10/3/310/3/5

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Signal Processing
    • Electrical and Electronic Engineering

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