Low-complexity frequency-domain GSC for broadband beamforming

Wei Liu, S. Weiss, L. Hanzo

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper proposes a new method to reduce the computational complexity of the frequency-domain GSC. In this proposed GSC structure, the column vectors of the blocking matrix constitute a series of bandpass filters, which decompose the impinging signals into components of specific DOA angles and frequencies and lead to band-limited spectra of blocking matrix outputs. When applying a DFT to each of these outputs, some of the frequency bins of the DFT are zero and can be omitted from the adaptive processing. This, together with partial adaptivity of the beamformer, results in a low computational complexity system.
Original languageEnglish
Pages386-389
Number of pages4
DOIs
Publication statusPublished - 2002
Event6th International Conference on Signal Processing - Beijing, China
Duration: 26 Aug 200230 Aug 2002

Conference

Conference6th International Conference on Signal Processing
Abbreviated titleICSP'02
CountryChina
CityBeijing
Period26/08/0230/08/02

Keywords

  • covariance matrix
  • subspace constraints
  • sensor arrays
  • phased arrays
  • least squares approximation
  • frequency
  • filters
  • array signal processing
  • computational complexity
  • constraint optimization

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