A new method of demodulating digital SSB signals

Yoichi Saito, Takahiro Yamasaki, Fumio Takahata

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    This paper presents the transmission performance of a class-IV partial-response signaling SSB system and proposes a method that can improve its power efficiency. A line code that has no dc component has been used in the SSB transmission of digital signals. The type of line code, such as a partial-response signaling, increases the modulation states, and as a result, decreases the power efficiency. To overcome this obstacle, a new demodulation method called "re-filtering and combining" is proposed on the assumption of orthogonal phase detection. The demodulated quadrature channel is re-filtered by a Hilbert filter and is combined with the in-phase channel. It is confirmed by computer simulations that the new demodulation method improves the BER performance and a 3 dB improvement of the power efficiency is obtained.

    Original languageEnglish
    Pages (from-to)2255-2262
    Number of pages8
    JournalIEICE Transactions on Communications
    VolumeE85-B
    Issue number10
    Publication statusPublished - 2002 Oct

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    Keywords

    • Class-IV partial-response signaling
    • Digital SSB
    • Hilbert filter
    • Power efficiency
    • Spectrum efficiency

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Computer Networks and Communications

    Cite this

    Saito, Y., Yamasaki, T., & Takahata, F. (2002). A new method of demodulating digital SSB signals. IEICE Transactions on Communications, E85-B(10), 2255-2262.