Independent component analysis based QAM receiver

    Authors

    I. Kostanic;W. Mikhael

    Comments

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    Abbreviated Journal Title

    Digit. Signal Prog.

    Keywords

    QAM demodulation; carrier phase recovery; direct conversion receiver; superheterodyne receiver; blind separation of source signals; independent component analysis; I/Q mismatch; Engineering, Electrical & Electronic

    Abstract

    For emerging wireless data applications in 5.8 GHz frequency band, carrier phase extraction and I/Q mismatch are challenging parts of the receiver design. This paper discusses a receiver architecture for detection of QAM signals that is well suited for wireless data applications. The architecture does not require estimation of the received signal phase and can be used in both superheterodyne and direct conversion approaches. A simplified independent component analysis (SICA) signal processing technique is developed and used to separate the components in the I and Q branches of the receiver. It is demonstrated that the proposed receiver is robust with respect to amplitude and phase mismatch of the local oscillator. The performance of the SICA QAM receiver architecture is successfully illustrated through computer-based simulations. (C) 2003 Elsevier Inc. All rights reserved.

    Journal Title

    Digital Signal Processing

    Volume

    14

    Issue/Number

    3

    Publication Date

    1-1-2004

    Document Type

    Article

    Language

    English

    First Page

    241

    Last Page

    252

    WOS Identifier

    WOS:000221415400005

    ISSN

    1051-2004

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