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IET Signal Processing

Issue 5 • Date September 2009

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Displaying Results 1 - 6 of 6
  • Time-varying discrete-time signal expansions as time-varying filter banks

    Publication Year: 2009, Page(s):353 - 367
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (658 KB)

    The time-varying discrete-time signal expansion was analysed based on the theory of time-varying filter banks in detail. A general definition of time-varying discrete-time wavelet transforms is provided. Usually, a time-varying discrete-time signal expansion can be implemented using a time-varying filter bank. Using the time-varying filter bank theory, the authors developed a useful algorithm to c... View full abstract»

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  • Spectrally efficient cooperative diversity protocol for uplink wireless transmission

    Publication Year: 2009, Page(s):368 - 380
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (476 KB)

    A spectrally efficient cooperative protocol for uplink wireless transmission in a centralised communication system is proposed, where each of the N users play the relaying and source roles simultaneously by using superposition (SP) modulation. The probability density function of the mutual information between SP-modulated transmitted and received signals of the cooperative uplink channels is deriv... View full abstract»

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  • Digital fractional order operators for R-wave detection in electrocardiogram signal

    Publication Year: 2009, Page(s):381 - 391
    Cited by:  Papers (8)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (593 KB)

    In this study, we present an effective R-wave detection method in the QRS complex of the electrocardiogram (ECG) based on digital differentiation and integration of fractional order. The detection algorithm is performed in two steps. The pre-processing step is based on a fractional order digital band-pass filter whose fractional order is obtained by maximising the signal to noise ratio of the ECG ... View full abstract»

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  • Uncertainty inequalities for linear canonical transform

    Publication Year: 2009, Page(s):392 - 402
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (214 KB)

    The novel Hausdorff-Young inequalities associated with the linear canonical transform (LCT) are derived based on the relation between the Fourier transform and the LCT in p-norm space (0<p<infin). Uncertainty relations for Shannon entropy and Renyi entropy based on the derived Hausdorff-Young inequality are yielded. It shows that these relations are functions of the transform p... View full abstract»

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  • Information fusion Wiener filter for the multisensor multichannel ARMA signals with time-delayed measurements

    Publication Year: 2009, Page(s):403 - 415
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (441 KB)

    For the multisensor multichannel autoregressive moving average (ARMA) signals with time-delayed measurements, a measurement transformation approach is presented, which transforms the equivalent state space model with measurement delays into the state space model without measurement delays, and then using the Kalman filtering method, under the linear minimum variance optimal weighted fusion rules, ... View full abstract»

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  • Two-dimensional direction of arrival estimation in the presence of uncorrelated and coherent signals

    Publication Year: 2009, Page(s):416 - 429
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (339 KB)

    In this paper, a novel two-dimensional direction of arrival (2-D DOA) estimation method is proposed based on a new array configuration when uncorrelated and coherent signals coexist. The DOAs of uncorrelated signals are estimated using the non-zero eigenvalues and corresponding eigenvectors of the DOA matrix (DOAM) combined with our proposed criterion. Meanwhile, we can form a new matrix without t... View full abstract»

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