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IEEE Signal Processing Letters

Issue 12 • Date Dec. 1997

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Displaying Results 1 - 7 of 7
  • A fast encoding algorithm for vector quantization

    Publication Year: 1997, Page(s):325 - 327
    Cited by:  Papers (55)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (90 KB)

    In this letter, we present a fast encoding algorithm for vector quantization that uses two characteristics of a vector, mean, and variance. Although a similar method using these features was already proposed, it handles these features separately, On the other hand, the proposed algorithm utilizes these features simultaneously to save computation time all the more. Since the proposed algorithm reje... View full abstract»

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  • Hybrid block truncation coding

    Publication Year: 1997, Page(s):328 - 330
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (73 KB)

    A hybrid block truncation coding (BTC) is presented. In the hybrid BTC, a universal codebook using Hamming codes and a differential pulse code modulation (DPCM) are employed, respectively, to the bit plane and the side information of BTC to reduce coding rate. Simulation results reveal that the performance of the proposed algorithm is only slightly worse than that of the hybrid BTC using vector qu... View full abstract»

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  • An efficient approach for the harmonic retrieval problem via Haar wavelet transform

    Publication Year: 1997, Page(s):331 - 333
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (98 KB)

    Modern subspace-based algorithms can offer high-resolution spectral estimates but with a cost of high computational complexity for the eigenvalue decomposition (EVD) involved. We propose a novel preprocessing scheme that can be used in conjunction with the subspace-based algorithms to alleviate the high amount of computations previously required. The main crux of the new scheme lies in a subband d... View full abstract»

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  • On the inversion of certain nonlinear systems

    Publication Year: 1997, Page(s):334 - 336
    Cited by:  Papers (11)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (135 KB)

    We present some theorems for the exact inversion and the pth-order inversion of a wide class of causal, discrete-time, nonlinear systems. The nonlinear systems we consider are described by the input-output relationship y(n)=g[x(n)]h[x(n-1). y(n-1)]+f[x(n-1). y(n-1)], where g[/spl middot/], h[/spl middot/. /spl middot/], and f[/spl middot/. /spl middot/] are causal, discrete-time and nonlinear oper... View full abstract»

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  • Rapid frequency-domain adaptation of causal FIR filters

    Publication Year: 1997, Page(s):337 - 339
    Cited by:  Papers (5)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (81 KB)

    Normalizing the convergence coefficient of the block frequency-domain least mean square (LMS) algorithm in each frequency bin can improve the convergence rate, but in some applications can lead to a biased steady-state solution if the filter is constrained to be strictly causal. An algorithm is presented in which the spectral factors of the bin-normalized convergence coefficient are used before an... View full abstract»

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  • List of reviewers

    Publication Year: 1997, Page(s):340 - 341
    Request permission for commercial reuse | PDF file iconPDF (10 KB)
    Freely Available from IEEE
  • 1997 Index IEEE Signal Processing Letters Vol. 4

    Publication Year: 1997, Page(s):1 - 14
    Request permission for commercial reuse | PDF file iconPDF (490 KB)
    Freely Available from IEEE

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The IEEE Signal Processing Letters is a monthly, archival publication designed to provide rapid dissemination of original, cutting-edge ideas and timely, significant contributions in signal, image, speech, language and audio processing.

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Editor-in-Chief
Peter Willett
University of Connecticut
Storrs, CT 06269
peter.willett@uconn.edu