DOA Estimation for Multi-Band Signal Sources Using Compressed Sensing Techniques with Khatri-Rao Processing

Tsubasa TERADA, Toshihiko NISHIMURA, Yasutaka OGAWA, Takeo OHGANE, Hiroyoshi YAMADA

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Summary :

Much attention has recently been paid to direction of arrival (DOA) estimation using compressed sensing (CS) techniques, which are sparse signal reconstruction methods. In our previous study, we developed a method for estimating the DOAs of multi-band signals that uses CS processing and that is based on the assumption that incident signals have the same complex amplitudes in all the bands. That method has a higher probability of correct estimation than a single-band DOA estimation method using CS. In this paper, we propose novel DOA estimation methods for multi-band signals with frequency characteristics using the Khatri-Rao product. First, we formulate a method that can estimate DOAs of multi-band signals whose phases alone have frequency dependence. Second, we extend the scheme in such a way that we can estimate DOAs of multi-band signals whose amplitudes and phases both depend on frequency. Finally, we evaluate the performance of the proposed methods through computer simulations and reveal the improvement in estimation performance.

Publication
IEICE TRANSACTIONS on Communications Vol.E97-B No.10 pp.2110-2117
Publication Date
2014/10/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E97.B.2110
Type of Manuscript
Special Section PAPER (Special Section on Recent Progress in Measurement and Design Techniques on Antennas, Propagation and Wireless Systems)
Category

Authors

Tsubasa TERADA
  Hokkaido University
Toshihiko NISHIMURA
  Hokkaido University
Yasutaka OGAWA
  Hokkaido University
Takeo OHGANE
  Hokkaido University
Hiroyoshi YAMADA
  Niigata University

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