Directions-of-Arrival Tracking of Coherent Cyclostationary Signals in Array Processing

Search this Article

Author(s)

    • XIN Jingmin
    • Mobile Communications Development Labs., Fujitsu Laboratories Ltd.
    • SANO Akira
    • Department of System Design Engineering, Keio University

Abstract

In this paper, we consider the problem of estimating the time-varying directions-of-arrival (DOAs) of coherent narrowband cyclostationary signals impinging on a uniform linear array (ULA). By exploiting the cyclostationarity of most communication signals, we investigate a new computationally efficient subspace-based direction estimation method without eigendecomposition and spatial smoothing (SS) processes. The proposed method uses the inherently temporal property of incident signals and a subarray scheme to decorrelate the signal coherency and to suppress the noise and interfering signals, while the null subspace is obtained from the resulting cyclic correlation matrix through a linear operation. Then an on-line implementation of this method is presented for tracking the DOAs of slowly moving coherent signals. The proposed algorithm is computationally simple and has a good tracking performance. The effectiveness of the proposed method is verified through numerical examples.

Journal

  • IEICE Trans. Fundamentals

    IEICE Trans. Fundamentals 86(8), 2037-2046, 2003-08-01

    The Institute of Electronics, Information and Communication Engineers

References:  60

Cited by:  3

Codes

  • NII Article ID (NAID)
    110003221287
  • NII NACSIS-CAT ID (NCID)
    AA10826239
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09168508
  • Data Source
    CJP  CJPref  NII-ELS 
Page Top