Output Energy Maximization Approach for Carrier-Phase Offset Recovery of 8-VSB Signals

Jangwoo Park, Thinh Nguyen, Wonzoo Chung

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This paper presents a blind adaptive carrier-phase offset recovery algorithm based on an output energy maximization approach for eight-level vestigial sideband (8-VSB) signals. Unlike conventional quadrature amplitude modulation signals, the 8-VSB signals in practice have an asymmetric energy balance between the in-phase and quadrature components, which can be used for recovering phase offset, but this has been neglected. We investigate this energy imbalance of the VSB signals and propose a blind adaptive phase offset recovery scheme by maximizing the energy of the in-phase component. Due to the maximum energy property, the proposed algorithm results in superior mean square error performance without undesirable local minima in comparison with the existing phase offset recovery algorithm based on dispersion minimization. We verify the performance of the proposed algorithm with a mathematical analysis and simulation.

    Original languageEnglish
    JournalIEEE Transactions on Broadcasting
    DOIs
    Publication statusAccepted/In press - 2016 Jan 29

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Media Technology

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