A robust generalized sidelobe canceller via steering vector estimation
نویسندگان
چکیده
منابع مشابه
A robust generalized sidelobe canceller via steering vector estimation
In the presence of the direction of arrival (DOA) mismatch, the performance of generalized sidelobe canceller (GSC) may suffer severe degradation due to the gain loss of the desired signal in the main array and cancellation. In this paper, one effective GSC algorithm is proposed to improve the robustness against the DOA mismatch of the desired signal. Firstly, two subspaces, which contain the d...
متن کاملA Robust Generalized Sidelobe Canceller Employing Speech Leakage Masking
A novel speech enhancement method based on generalized sidelobe canceller (GSC) structure is presented. We show that it is possible to reduce audible speech distortions and preserve residual noise level under acoustic model uncertainties. It can be done by constraining a speech leakage power according to masking phenomena and conditional minimizing the residual noise power. We implemented the p...
متن کاملA novel wavelet-based generalized sidelobe canceller
This paper presents a novel narrowband adaptive beamformer with the generalized sidelobe canceller (GSC) as the underlying structure. The new beamformer employs the regular M -band wavelet lters in the design of the blocking matrix of the GSC, which, as justi ed analytically, can indeed block the desired signals as required, provided the wavelet lters have su ciently high regularity. Additional...
متن کاملModulated Lapped Transform Generalized Sidelobe Canceller
Continuing improvements in analog and digital technology has made elemental digital beamforming (DBF) for sensor arrays a reality. Weak signal reception enhancement can be achieved through the adaptive suppression of potentially time-varying interference in operational environments. Utilizing all the degrees of freedom (DoF's) of an adaptive elemental DBF array with a large number of elements i...
متن کاملOverdetermined Blind Source Extraction exploiting a Generalized Sidelobe Canceller structure
In many acoustic applications, the extraction of only one desired source signal from a mixture of signals is required. We propose a novel method to perform this extraction in the overdetermined case where more sensors than sources are available. We apply blind signal processing techniques in a structure that is similar to a Generalized Sidelobe Canceller (GSC). In a GSC the upper branch reprodu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: EURASIP Journal on Advances in Signal Processing
سال: 2016
ISSN: 1687-6180
DOI: 10.1186/s13634-016-0358-7