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Adaptive Filters and Arrays

Abstract

Adaptive filters and adaptive arrays have numerous applications as components of communication systems. This chapter covers those adaptive filters and adaptive arrays that are amenable to exploiting the special spectral characteristics of spread-spectrum signals to enable interference suppression beyond that inherent in the despreading or dehopping. Adaptive filters for the rejection of narrowband interference or primarily for the rejection of wideband interference are presented. The least-mean-square (LMS), normalized LMS, and Frost algorithms are derived and conditions for the convergence of their mean weight vectors are determined. Adaptive arrays for both direct-sequence systems and frequency-hopping systems are described and shown to potentially provide a very high degree of interference suppression.

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Torrieri, D. (2018). Adaptive Filters and Arrays. In: Principles of Spread-Spectrum Communication Systems. Springer, Cham. https://doi.org/10.1007/978-3-319-70569-9_5

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  • DOI: https://doi.org/10.1007/978-3-319-70569-9_5

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-70568-2

  • Online ISBN: 978-3-319-70569-9

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