Out-of-Band Radiation Reduction in Cognitive Radio OFDM Systems Hybridizing Firefly Algorithm with Generalized Sidelobe Canceller
Sign Up to like & getrecommendations! Published in 2018 at "Wireless Personal Communications"
DOI: 10.1007/s11277-018-5359-4
Abstract: Orthogonal frequency division multiplexing is the most popular method for dynamic spectrum access because of its ability in changing the spectrum shapes. However, it produces a substantial out-of-band (OOB) radiation due to the high sidelobes… read more here.
Keywords: reduction; generalized sidelobe; algorithm generalized; firefly algorithm ... See more keywords
Forward-backward generalized sidelobe canceler beamforming applied to medical ultrasound imaging
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DOI: 10.1063/1.4974247
Abstract: For adaptive ultrasound imaging, accurate estimation of the covariance matrix is of great importance, and it has a fundamental influence on the performance of the adaptive beamformer. In this paper, a new forward-backward generalized sidelobe… read more here.
Keywords: generalized sidelobe; backward generalized; ultrasound imaging; forward backward ... See more keywords
A Division-Free and Variable-Regularized LMS-Based Generalized Sidelobe Canceller for Adaptive Beamforming and Its Efficient Hardware Realization
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DOI: 10.1109/access.2018.2875409
Abstract: This paper proposes a new division-free generalized sidelobe canceller-based adaptive beamformer and its efficient hardware realization. A discrete cosine transform-based blocking matrix is proposed for uniform linear array to decorrelate the input so as to… read more here.
Keywords: division free; generalized sidelobe; division; efficient hardware ... See more keywords
Generalized sidelobe canceler beamforming applied to medical ultrasound imaging
Sign Up to like & getrecommendations! Published in 2017 at "Acoustical Physics"
DOI: 10.1134/s1063771017020087
Abstract: A generalized sidelobe canceler (GSC) approach is proposed for medical ultrasound imaging. The approach uses a set of adaptive weights instead of traditional non-adaptive weights, thus suppressing the interference and noise signal of echo data.… read more here.
Keywords: generalized sidelobe; ultrasound imaging; ultrasound; medical ultrasound ... See more keywords
Generalized Sidelobe Canceller for Ultrasound Imaging based on Eigenvalue Decomposition
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DOI: 10.1134/s1063771019010159
Abstract: The improved generalized sidelobe canceller (GSC) based on eigenvalue decomposition beamforming technique for ultrasound imaging is proposed. Firstly, the signal subspace is obtained by performing eigenvalue decomposition on the covariance matrix of received data. Secondly,… read more here.
Keywords: generalized sidelobe; eigenvalue decomposition; decomposition; sidelobe canceller ... See more keywords
Generalized sidelobe canceler beamforming combined with Eigenspace-Wiener postfilter for medical ultrasound imaging
Sign Up to like & getrecommendations! Published in 2022 at "Technology and Health Care"
DOI: 10.3233/thc-thc228046
Abstract: BACKGROUND: The beamforming algorithm is key to the image quality of the medical ultrasound system. The generalized sidelobe canceler (GSC) beamforming can improve the image quality in lateral resolution, but the contrast is not improved… read more here.
Keywords: sidelobe canceler; generalized sidelobe; wiener postfilter; eigenspace wiener ... See more keywords
Broadband Generalized Sidelobe Canceler Beamforming Applied to Ultrasonic Imaging
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DOI: 10.3390/app10041207
Abstract: A broadband generalized sidelobe canceler (Broadband-GSC) application for near-field beamforming is proposed. This approach is implemented in the wavelet domain. Broadband-GSC provides a set of complex, adapted apodization weights for each wavelet subband. The proposed… read more here.
Keywords: broadband generalized; generalized sidelobe; broadband gsc; broadband ... See more keywords