By Topic

Journal of Systems Engineering and Electronics

Issue 4 • Date Dec. 2005

Filter Results

Displaying Results 1 - 25 of 47
  • [Front cover]

    Publication Year: 2005, Page(s): c1
    IEEE is not the copyright holder of this material | PDF file iconPDF (69 KB)
    Freely Available from IEEE
  • Editorial committee

    Publication Year: 2005, Page(s): 1
    IEEE is not the copyright holder of this material | PDF file iconPDF (191 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contents

    Publication Year: 2005, Page(s):1 - 2
    IEEE is not the copyright holder of this material | PDF file iconPDF (446 KB)
    Freely Available from IEEE
  • Dynamic random channel reservation protocol

    Publication Year: 2005, Page(s):721 - 727
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1315 KB)

    Demand assignment MAC protocols have been used widely in wireless networks. It can effectively utilize wireless bandwidth. Some strategies can be used by demand assignment MAC protocols to further improve their efficiency. The concept of transmit probability is introduced. This concept allows a request slot to be assigned to many different traffic classes at the same time. Based on it, the dynamic... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multisensor image fusion algorithm using nonseparable wavelet frame transform

    Publication Year: 2005, Page(s):728 - 732
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1292 KB)

    A multisensor image fusion algorithm is described using 2-dimensional nonseparable wavelet frame (NWF) transform. The source multisensor images are first decomposed by the NWF transform. Then, the NWF transform coefficients of the source images are combined into the composite NWF transform coefficients. Inverse NWF transform is performed on the composite NWF transform coefficients in order to obta... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • HF radar sea clutter rejection by nonlinear projections

    Publication Year: 2005, Page(s):733 - 737
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1014 KB)

    In the background of signal detection for high frequency (HF) radar, the sea clutter is quite significant and can mask some weak target signals. A new clutter rejection method named “nonlinear projection” is given to improve the SNR of the target. This approach is based on the recent observation that HF sea clutter may be modeled as a nonlinear deterministic dynamical system. After a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Non-negative matrix factorization with Log Gabor wavelets for image representation and classification

    Publication Year: 2005, Page(s):738 - 745
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3112 KB)

    Many problems in image representation and classification involve some form of dimensionality reduction. Nonnegative matrix factorization (NMF) is a recently proposed unsupervised procedure for learning spatially localized, partsbased subspace representation of objects. An improvement of the classical NMF by combining with Log-Gabor wavelets to enhance its part-based learning ability is presented. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Suboptimal distributed Kalman filtering fusion with feedback

    Publication Year: 2005, Page(s):746 - 749
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (672 KB)

    In order to improve the accuracy of fusion algorithm, feedback is introduced into Kalman filtering fusion. Fusion center broadcasts its latest estimated states to the local sensors, which can improve the performance of local tracking error through reducing the covariance of each local error, and only needs calculating the trace of error variance matrices without calculating the inverse of error va... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fast interactive segmentation algorithm of image sequences based on relative fuzzy connectedness

    Publication Year: 2005, Page(s):750 - 755
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2371 KB)

    A fast interactive segmentation algorithm of image-sequences based on relative fuzzy connectedness is presented. In comparison with the original algorithm, the proposed one, with the same accuracy, accelerates the segmentation speed by three times for single image. Meanwhile, this fast segmentation algorithm is extended from single object to multiple objects and from single-image to image-sequence... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Neural network approach to blind-estimation of PN spreading sequence in lower SNR DS/SS signals

    Publication Year: 2005, Page(s):756 - 760
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (959 KB)

    An approach based on discrete Karhunen-Loeve transformation of the DS/SS signals is proposed to estimate PN sequence in lower S/N ratio DS/SS signals. Characteristics of self-organization and principle components extraction of unsupervised neural networks are exploited adequately. Theoretical analysis and experimental results are provided to show that this approach can work well on the lower S/N r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Reduction effect of SLM on the PAPR in MC-CDMA system

    Publication Year: 2005, Page(s):761 - 766
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (957 KB)

    The model of the MC-CDMA system using selective mapping (SLM) is analyzed and the upper bound of the peak-average power ratio (PAPR) in the system is derived. For the PAPR distribution and the connection between the PAPR and the number of users in the MC-CDMA system using SLM, the simulations are given based on several phase sequences in SLM. The simulation results show that when random sequences,... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of two-dimensional digital filters using neural networks

    Publication Year: 2005, Page(s):767 - 771
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (818 KB)

    A new approach for the design of two-dimensional (2-D) linear phase FIR digital filters based on a new neural networks algorithm (NNA) is provided. A compact expression for the transfer function of a 2-D linear phase FIR filter is derived based on its frequency response characteristic, and the NNA, based on minimizing the square-error in the frequency-domain, is established according to the compac... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Study on the transient radiation for apertures excited by rectangle pulse

    Publication Year: 2005, Page(s):772 - 774
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (569 KB)

    The analytic representation of the transient radiation for an aperture excited by a rectangle pulse is obtained. It shows that the field duration and amplitude depend on the observation distance, the elevation angle, the pulse width of the rectangle pulse and the aperture size. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New method to implement digital down converter in radar system

    Publication Year: 2005, Page(s):775 - 780
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1148 KB)

    Digital down converter (DDC) is the main part of the next generation high frequency (HF) radar. In order to realize the single chip integrations of digital receiver hardware in the next generation HF Radar, a new design for DDC by using FPGA is presented. Some important and practical applications are given in this paper, and the result can prove the validity. Because we can adjust the parameters f... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Incremental clustering algorithm via cross-entropy

    Publication Year: 2005, Page(s):781 - 786
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1173 KB)

    A new incremental clustering method is presented, which partitions dynamic data sets by mapping data points in high dimension space into low dimension space based on (fuzzy) cross-entropy(CE). This algorithm is divided into two parts: initial clustering process and incremental clustering process. The former calculates fuzzy cross-entropy or cross-entropy of one point relative to others and a hiera... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Statistical performance of IF estimation of LFM signals with time-varying amplitude using the peak of WVD

    Publication Year: 2005, Page(s):787 - 791
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (895 KB)

    The instantaneous frequency (IF) estimation of the linear frequency modulated (LFM) signals with time-varying amplitude using the peak of the Wigner-Ville distribution (WVD) is studied. Theoretical analysis shows that the estimation on LFM signals with time-varying amplitude is unbiased, only if WVD of time-varying amplitude reaches its maximum at frequency zero no matter in which time. The statis... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiple description video coding using GOB alternation and low quality macroblock update

    Publication Year: 2005, Page(s):792 - 796
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1142 KB)

    To combat packet loss and realize robust video transmission over Internet and wireless networks, a new multiple description (MD) video coding method is proposed. In the method, two descriptions for each video frame is first created by group of blocks (GOB) alternation. Motion information is then duplicated in both the descriptions and a process called low quality macroblock update is designed to r... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Special algorithm of enhancing underwater target-radiated dynamic line spectrum

    Publication Year: 2005, Page(s):797 - 801
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1099 KB)

    Performance of traditional adaptive line enhancer (ALE) in suppressing Gaussian noise is low and can get worse at low input signal-to-noise ratio(SNR). For greatly overcoming these disadvantages, feature of fourth-order cumulant (POC) different slices for quasi-stationary random process is analyzed, fourth order cumulant(POC) different slice-based adaptive dynamic line enhancer is presented, and o... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Pattern recognition-based method for radar anti-deceptive jamming

    Publication Year: 2005, Page(s):802 - 805
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (730 KB)

    In order to make the effective ECCM to the deceptive jamming, especially the angle deceptive jamming, this paper establishes a signal-processing model for anti-deceptive jamming firstly, in which two feature-extracting algorithms, i. e. the statistical algorithm and the neural network (NN) algorithm are presented, then uses the RBF NN as the classifier in the processing model. Finally the two algo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Labeling algorithm and its fairness analysis for autonomous system

    Publication Year: 2005, Page(s):806 - 810
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (880 KB)

    A kind of packet labeling algorithm for autonomous system is introduced. The fairness of the algorithm for each traffic stream in the integrated-services is analyzed. It is shown that the rate of each stream in the integrated-services would converge to a stable value if the transmitting or forwarding rates converge to that of the receiving exponentially. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Newton type methods for solving nonsmooth equations

    Publication Year: 2005, Page(s):811 - 815
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (831 KB)

    Numerical methods for the solution of nonsmooth equations are studied. A new subdif ferential for a locally Lipschitzian function is proposed. Based on this subdif ferential, Newton methods for solving nonsmooth equations are developed and their convergence is shown. Since this subdifferential is easy to be computed, the present Newton methods can be executed easily in some applications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Rolling optimization algorithm based on collision window for single machine scheduling problem

    Publication Year: 2005, Page(s):816 - 822
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1219 KB)

    Focusing on the single machine scheduling problem which minimizes the total completion time in the presence of dynamic job arrivals, a rolling optimization scheduling algorithm is proposed based on the analysis of the character and structure of scheduling. An optimal scheduling strategy in collision window is presented. Performance evaluation of this algorithm is given. Simulation indicates that t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Applying XML for designing and interchanging information for multidimensional model

    Publication Year: 2005, Page(s):823 - 830
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1442 KB)

    In order to exchange and share information among the conceptual models of data warehouse, and to build a solid base for the integration and share of metadata, a new multidimensional concept model is presented based on XML and its DTD is defined, which can perfectly describe various semantic characteristics of multidimensional conceptual model. According to the multidimensional conceptual modeling ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fault prediction of fighter based on nonparametric density estimation

    Publication Year: 2005, Page(s):831 - 836
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1088 KB)

    Fighters and other complex engineering systems have many characteristics such as difficult modeling and testing, multiple working situations, and high cost. Aim at these points, a new kind of real-time fault predictor is designed based on an improved k-nearest neighbor method, which needs neither the math model of system nor the training data and prior knowledge. It can study and predict while sys... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Multiple models adaptive feedforward decoupling controller

    Publication Year: 2005, Page(s):837 - 842
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1026 KB)

    When the parameters of the system change abruptly, a new multivariable adaptive feedforward decoupling controller using multiple models is presented to improve the transient response. The system models are composed of multiple fixed models, one free-running adaptive model and one re-initialized adaptive model. The fixed models are used to provide initial control to the process. The re-initialized ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

Journal of Systems Engineering and Electronics reports the latest developments and achievements in both theoretical and practical aspects of systems engineering, electronics and related research areas.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Professor Rong Shi
Journal of Systems Engineering and Electronics