By Topic

IEEE Signal Processing Letters

Issue 3 • March 2006

Filter Results

Displaying Results 1 - 23 of 23
  • Table of contents

    Publication Year: 2006, Page(s):c1 - c4
    Request permission for commercial reuse | PDF file iconPDF (40 KB)
    Freely Available from IEEE
  • IEEE Signal Processing Letters publication information

    Publication Year: 2006, Page(s): c2
    Request permission for commercial reuse | PDF file iconPDF (36 KB)
    Freely Available from IEEE
  • Localization of abnormal EEG sources using blind source separation partially constrained by the locations of known sources

    Publication Year: 2006, Page(s):117 - 120
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    Electroencephalogram (EEG) source localization requires a solution to an ill-posed inverse problem. The additional challenge is to solve this problem in the context of multiple moving sources. An effective and simple technique for both separation and localization of EEG sources is therefore proposed by incorporating an algorithmically coupled blind source separation (BSS) approach. The method reli... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved optimal linear filters for the discrimination of multichannel waveform templates for spike-sorting applications

    Publication Year: 2006, Page(s):121 - 124
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB) | HTML iconHTML

    Optimal linear filters are well known as a useful technique for processing extracellular recordings of neural activity. They can be tuned to respond only to a corresponding waveform template, while minimizing the energy of all other templates, and can be used to resolve spikes that are overlapping. The derivation of optimal linear multichannel filters goes back to , but the computation is usually ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A block turbo phase synchronization scheme

    Publication Year: 2006, Page(s):125 - 128
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB) | HTML iconHTML

    This letter presents an original phase synchronization scheme designed for block turbo coded systems. This is a low-complexity scheme. It copes with low signal-to-noise ratios, taking complete advantage of the turbo coding possibilities. We display various results, showing that the proposed algorithm is able to process blocks of a few hundreds bits and that it tackles the case of large quadrature ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Channel estimation for PRP-OFDM in slowly time-varying channel: first-order or second-order statistics?

    Publication Year: 2006, Page(s):129 - 132
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB) | HTML iconHTML

    The statistics-based channel estimators can estimate the channel state information (CSI) in the static channel but can only obtain the averaged CSI (ACSI) in the time-varying (TV) channel. This letter investigates both first-order statistics (FOS) and second-order statistics (SOS)-based channel estimators for the pseudo random postfix (PRP) orthogonal frequency-division multiplexing system in the ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Polynomial-constrained detection using a penalty function and a differential-equation algorithm for MIMO systems

    Publication Year: 2006, Page(s):133 - 136
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB) | HTML iconHTML

    In this letter, we develop a family of approximate maximum-likelihood (ML) detectors for multiple-input multiple-output systems by relaxing the ML detection problem using constellation-specific polynomial constraints. The resulting constrained optimization problem is solved using a penalty function approach. Moreover, to escape from the local minima, which improves the detection performance, a dif... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Robust H filter design with variance constraints and parabolic pole assignment

    Publication Year: 2006, Page(s):137 - 140
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB) | HTML iconHTML

    In this letter, we consider a multiobjective filtering problem for uncertain linear continuous time-invariant systems subject to error variance constraints. A linear filter is used to estimate a linear combination of the system states. The problem addressed is the design of a filter such that, for all admissible parameter uncertainties, the following three objectives are simultaneously achieved: 1... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A rational discrete approximation to the operator s0.5

    Publication Year: 2006, Page(s):141 - 144
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    This letter deals with the discrete approximation of the fractional-order differentiator s0.5. The proposed approach is based on the efficient continued fraction approximation of the operator. The discrete differentiator is expressed as a z-transfer function, whose coefficients are given in closed form in terms of the sampling time and an approximation parameter. Simulation experiments ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Orthogonal symmetric prefilter banks for discrete multiwavelet transforms

    Publication Year: 2006, Page(s):145 - 148
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (200 KB) | HTML iconHTML

    Traditional design of critically sampled prefilters for discrete multiwavelet transform ignores the preservation of the linear phase property, which is important for many applications, such as image coding and digital communications. Balanced multiwavelets solve this problem but make the filters longer. By using linear phase filter banks, we propose a simple algorithm for the design of orthogonal ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Tighter limit cycle bounds for digital filters

    Publication Year: 2006, Page(s):149 - 152
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    A procedure for obtaining tighter bounds on zero-input limit cycles is presented. The proposed new bounds are applicable to digital filters of arbitrary order, described in state-space formulation and implemented with fixed-point arithmetic. For the most part, we obtain smaller bounds than those reported in the literature, using a computationally efficient algorithm that is easy to implement and h... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Embedding halftones of different resolutions in a full-scale halftone

    Publication Year: 2006, Page(s):153 - 156
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (992 KB) | HTML iconHTML

    To efficiently render halftone images for various printers and displays that support different resolutions, it is desirable that all halftoning results can be produced at a time, and all of them can be embedded in a single full-scale halftone image such that a simple down-sampling process can extract images of suitable resolutions from it if necessary. This letter presents a framework for achievin... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Lossless compression of hyperspectral images using lookup tables

    Publication Year: 2006, Page(s):157 - 160
    Cited by:  Papers (50)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB) | HTML iconHTML

    In this letter, we propose a new algorithm for lossless compression of hyperspectral images. The proposed method searches the previous band for a pixel of equal value to the pixel co-located to the one to be coded. The pixel in the same position as the obtained pixel in the current band is used as the predictor. Lookup tables are used to speed up the search. The algorithm is suitable for compressi... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High-payload image steganography using two-way block matching

    Publication Year: 2006, Page(s):161 - 164
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB) | HTML iconHTML

    This letter presents a novel image steganography method that utilizes a two-way block-matching procedure to search for the highest similarity block for each block of the important image. The bases and indexes obtained together with some not-well-matched blocks are recorded in the least significant bits of the cover image using a hop scheme. The method exhibits a high data payload, which reduces th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamical running coding in digital steganography

    Publication Year: 2006, Page(s):165 - 168
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB) | HTML iconHTML

    A novel coding method for digital steganography is described, in which the amount of bit alterations introduced into a cover medium is significantly reduced, leading to less distortion and enhanced security against steganalysis. Unlike other block-based stego-coding approaches, the proposed method works in a running manner. In this way, each secret bit is represented by a series of consecutive cov... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A self-structured adaptive decision feedback equalizer

    Publication Year: 2006, Page(s):169 - 172
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB) | HTML iconHTML

    In a decision feedback equalizer (DFE), the structural parameters, including the decision delay, the feedforward filter (FFF), and feedback filter (FBF) lengths, must be carefully chosen, as they greatly influence the performance. Although the FBF length can be set as the channel memory, there is no closed-form expression for the FFF length and decision delay. In this letter, first we analytically... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new gradient search interpretation of super-exponential algorithm

    Publication Year: 2006, Page(s):173 - 176
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB) | HTML iconHTML

    In this letter, the super-exponential algorithm (SEA) is interpreted as a gradient search of an extremum of the inverse filter criteria, and the optimal gradient search step-size is presented as the root of a quartic equation. Different from the gradient search interpretation presented by Mboup and Regalia in the combined channel-equalizer space, the interpretation here is directly related with th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Signal modification for ADPCM based on analysis-by-synthesis framework

    Publication Year: 2006, Page(s):177 - 179
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (136 KB) | HTML iconHTML

    In this letter, we propose a novel approach to improve the performance of the adaptive differential pulse code modulation (ADPCM) codec by modifying the input signal under the analysis-by-synthesis framework. Modification of the input signal is performed such that the ADPCM codec causes less quantization error. When applied to the ITU-T G.726 ADPCM coder, the proposed algorithm improves the output... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IEEE Signal Processing Letters Information for authors

    Publication Year: 2006, Page(s):180 - 181
    Request permission for commercial reuse | PDF file iconPDF (55 KB)
    Freely Available from IEEE
  • Special issue on blind signal processing for speech and audio applications

    Publication Year: 2006, Page(s): 182
    Request permission for commercial reuse | PDF file iconPDF (105 KB)
    Freely Available from IEEE
  • 2006 IEEE Workshop on Machine Learning for Signal Processing

    Publication Year: 2006, Page(s): 183
    Request permission for commercial reuse | PDF file iconPDF (626 KB)
    Freely Available from IEEE
  • The 6th IEEE International Symposium on Signal Processing and Information Technology (ISSPIT 2006)

    Publication Year: 2006, Page(s): 184
    Request permission for commercial reuse | PDF file iconPDF (517 KB)
    Freely Available from IEEE
  • IEEE Signal Processing Society Information

    Publication Year: 2006, Page(s): c3
    Request permission for commercial reuse | PDF file iconPDF (34 KB)
    Freely Available from IEEE

Aims & Scope

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.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
James E. Fowler
Dept Electrical & Computer Engineering
Associate Director                         
Distributed Analytics and Security Institute
Mississippi State University
Mississippi State, MS 39762 USA
fowler@ece.msstate.edu