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Applications of Time-Frequency Signal Processing in Wireless Communications and Bioengineering

  1. Content type: Research Article

    The effects of hypertension are chronic and continuous; it affects gait, balance, and fall risk. Therefore, it is desirable to assess gait health across hypertensive and nonhypertensive subjects in order to pr...

    Authors: Patrick Mitchell, Debra Krotish, Yong-June Shin and Victor Hirth

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:206560

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  2. Content type: Research Article

    This work evaluates the performance of high-resolution quadratic time-frequency distributions (TFDs) including the ones obtained by the reassignment method, the optimal radially Gaussian kernel method, the t-f...

    Authors: Imran Shafi, Jamil Ahmad, SyedIsmail Shah, AtaulAziz Ikram, Adnan Ahmad Khan, Sajid Bashir and FaisalMahmood Kashif

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:806043

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  3. Content type: Research Article

    We investigate the performance of frequency division multiplexed (FDM) signals, where multiple orthogonal Hermite-Gaussian carriers are used to increase the bandwidth efficiency. Multiple Hermite-Gaussian func...

    Authors: Sultan Aldirmaz, Ahmet Serbes and Lutfiye Durak-Ata

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:684097

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  4. Content type: Research Article

    Determining orthonormal eigenvectors of the DFT matrix, which is closer to the samples of Hermite-Gaussian functions, is crucial in the definition of the discrete fractional Fourier transform. In this work, we...

    Authors: Ahmet Serbes and Lutfiye Durak-Ata (EURASIP Member)

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:191085

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  5. Content type: Research Article

    Near-infrared spectroscopy (NIRS) is a noninvasive system for the real-time monitoring of the concentration of oxygenated ( http://static-content.springer.com/image/art%3A10.1155%2F2010%2F459213/MediaObjects/13634_2009_Article_2802_IEq1_HTML.gif ) and reduced...

    Authors: Filippo Molinari, Samanta Rosati, William Liboni, Emanuela Negri, Ornella Mana, Gianni Allais and Chiara Benedetto

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:459213

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  6. Content type: Research Article

    Time-varying coherence is a powerful tool for revealing functional dynamics between different regions in the brain. In this paper, we address ways of estimating evolutionary spectrum and coherence using the ge...

    Authors: Cheng Liu, William Gaetz and Hongmei Zhu

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:390910

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  7. Content type: Review Article

    An image classification technique, which has recently been introduced for visual pattern recognition, is successfully applied for human gait classification based on radar Doppler signatures depicted in the tim...

    Authors: Fok Hing Chi Tivive, Abdesselam Bouzerdoum and Moeness G. Amin

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:389716

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  8. Content type: Research Article

    A new LFM-signal detector formulated by the integration of the 4th-power modulus of the fractional Fourier transform is proposed. It has similar performance to the modulus square detector of Radon-ambiguity tr...

    Authors: Zhiping Yin and Weidong Chen

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:876282

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  9. Content type: Research Article

    We consider the reconstruction of signals from nonuniformly spaced samples using a projection onto convex sets (POCSs) implemented with the evolutionary time-frequency transform. Signals of practical interest ...

    Authors: Jinsung Oh, Seda Senay and LuisF Chaparro

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:367317

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  10. Content type: Research Article

    We discuss the production of induced noise by a pulse and the propagation of the noise in a dispersive medium. We present a simple model where the noise is the sum of pulses and where the mean of each pulse is...

    Authors: Leon Cohen

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:484753

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  11. Content type: Research Article

    A novel method, called adaptive pulse coupled neural network (AD-PCNN) using a two-stage denoising strategy, is proposed to reduce noise and speckle in the spectrograms of Doppler blood flow signals. AD-PCNN c...

    Authors: Haiyan Li, Yufeng Zhang and Dan Xu

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:918015

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  12. Content type: Research Article

    This paper concerns the mean square error optimal weighting factors for multiple window spectrogram of different stationary and nonstationary processes. It is well known that the choice of multiple windows is ...

    Authors: Maria Hansson-Sandsten and Johan Sandberg

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:391798

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  13. Content type: Research Article

    Multiple-input multiple-output (MIMO) systems hold the potential to drastically improve the spectral efficiency and link reliability in future wireless communications systems. A particularly promising candidat...

    Authors: Erol Önen, Aydın Akan and LuisF Chaparro

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:549197

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  14. Content type: Research Article

    The extraction of the frequency components of a signal can be useful for the characterization of the underlying system. One method for isolating a frequency component of a signal is by the extraction and recon...

    Authors: Jérémy Terrien, Thora Steingrimsdottir, Catherine Marque and Brynjar Karlsson

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:242493

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  15. Content type: Research Article

    We consider the estimation of time-varying channels for Cooperative Orthogonal Frequency Division Multiplexing (CO-OFDM) systems. In the next generation mobile wireless communication systems, significant Doppl...

    Authors: Erol Önen, Niyazi Odabaşioğlu and Aydın Akan

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:973286

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  16. Content type: Research Article

    This paper describes the use of the Morlet wavelet transform to investigate the difference in the time-frequency plane between uterine EMG signals recorded simultaneously on two different sites on women's abdo...

    Authors: Mahmoud Hassan, Jérémy Terrien, Brynjar Karlsson and Catherine Marque

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:918012

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  17. Content type: Research Article

    Joint time-frequency representations offer a rich representation of event related potentials (ERPs) that cannot be obtained through individual time or frequency domain analysis. This representation, however, c...

    Authors: Selin Aviyente, Edward M. Bernat, Stephen M. Malone and William G. Iacono

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:289571

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  18. Content type: Research Article

    Fast Hermite projections have been often used in image-processing procedures such as image database retrieval, projection filtering, and texture analysis. In this paper, we propose an innovative approach for t...

    Authors: Irena Orović, Srdjan Stanković, Tom Chau, Catriona M. Steele and Ervin Sejdić

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:323125

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  19. Content type: Research Article

    We propose and demonstrate a wavelength- and time-selective reconfigurable optical add/drop multiplexer (ROADM) using time-frequency domain processing. The proposed ROADM is realized by allocating wavelength c...

    Authors: Tsuyoshi Konishi, Ryosuke Itoh and Kazuyoshi Itoh

    Citation: EURASIP Journal on Advances in Signal Processing 2010 2010:807521

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