Biquaternion cumulant-MUSIC for DOA estimation of noncircular signals

Authors:
Xiaoming Gou;Zhiwen Liu;Yougen Xu
Affiliations:
School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, People's Republic of China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, People's Republic of China;School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, People's Republic of China
Venue:
Signal Processing
Year:
2013

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Abstract

Direction-of-arrival (DOA) estimation for noncircular sources is addressed within the hypercomplex framework utilizing fourth-order (FO) cumulants and a MUSIC-like estimator is proposed. Simulation results show the better performance of the proposed method compared to its complex counterpart in terms of both accuracy and robustness to model errors due to the stronger orthogonality in the biquaternion domain.