International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2569

Full Length Research Paper

Direction of arrival estimation using modified orthogonal matching pursuit algorithm

Gui Guan1,2*, Qun Wan1 and Fumiyuki Adachi2      
1Department of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China. 2Department of Electrical and Communication Engineering, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, Japan.  
Email: [email protected]

  •  Accepted: 17 May 2011
  •  Published: 02 October 2011

Abstract

Direction of arrival (DOA) estimation is a sparse reconstruction problem. However, conventional orthogonal matching pursuit (OMP) may fail to identify the correct atoms since the redundant dictionary composed of the direction vectors is highly coherent. To mitigate the coherence problem, in this paper, we propose a modified OMP by constructing data dependent sensing dictionary for sparse reconstruction in the noisy case. Simulation results are presented to demonstrate the superior performance of the proposed algorithm for DOA estimation.

 

Key words: Direction of arrival (DOA) estimation, orthogonal matching pursuit (OMP), sparse reconstruction, redundant dictionary, sensing dictionary.