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IEEE Signal Processing Letters

Issue 10 • Date Oct. 2013

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Displaying Results 1 - 25 of 28
  • [Front cover]

    Publication Year: 2013, Page(s): C1
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  • IEEE Signal Processing Letters publication information

    Publication Year: 2013, Page(s): C2
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  • Table of Contents

    Publication Year: 2013, Page(s):921 - 922
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  • Table of Contents

    Publication Year: 2013, Page(s):923 - 924
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  • Sampling and Reconstruction on a Diamond Grid and the Tetrahedral Digital Waveguide Mesh

    Publication Year: 2013, Page(s):925 - 928
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1450 KB) | HTML iconHTML

    It is shown that half of the points on the diamond grid are redundant for sampling and reconstructing a bandlimited 3-D signal. This redundancy is then exploited to show that the tetrahedral digital waveguide mesh requires four times more computational density and twice the memory storage for the same approximation as a finite difference scheme on the face-centered cubic lattice. View full abstract»

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  • A Reduced-Complexity Partial-Interference-Cancellation Group Decoder for STBCs

    Publication Year: 2013, Page(s):929 - 932
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1313 KB) | HTML iconHTML

    In this letter, we propose a reduced-complexity implementation of partial interference cancellation group decoder with successive interference cancellation (PIC-GD-SIC) by employing the theory of displacement structures. The proposed algorithm exploits the block-Toeplitz structure of the effective matrix and chooses an ordering of the groups such that the zero-forcing matrices associated with the ... View full abstract»

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  • Verification-Based Interval-Passing Algorithm for Compressed Sensing

    Publication Year: 2013, Page(s):933 - 936
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (831 KB) | HTML iconHTML

    We propose a verification-based Interval-Passing (IP) algorithm for iteratively reconstruction of nonnegative sparse signals using parity check matrices of low-density parity check (LDPC) codes as measurement matrices. The proposed algorithm can be considered as an improved IP algorithm by further incorporation of the mechanism of verification algorithm. It is proved that the proposed algorithm pe... View full abstract»

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  • Human Identification From ECG Signals Via Sparse Representation of Local Segments

    Publication Year: 2013, Page(s):937 - 940
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (630 KB) | HTML iconHTML

    This work proposes a novel framework to extract compact and discriminative features from Electrocardiogram (ECG) signals for human identification based on sparse representation of local segments. Specifically, local segments extracted from an ECG signal are projected to a small number of basic elements in a dictionary, which is learned from training data. A final representation is extracted by per... View full abstract»

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  • Matrix-Based Ramanujan-Sums Transforms

    Publication Year: 2013, Page(s):941 - 944
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1426 KB) | HTML iconHTML

    In this letter, we study the Ramanujan Sums (RS) transform by means of matrix multiplication. The RS are orthogonal in nature and therefore offer excellent energy conservation capability. The 1-D and 2-D forward RS transforms are easy to calculate, but their inverse transforms are not defined in the literature for non-even function View full abstract»

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  • Extension of the MFLRT to Detect an Unknown Deterministic Signal Using Multiple Sensors, Applied for Precipitation Detection

    Publication Year: 2013, Page(s):945 - 948
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (833 KB) | HTML iconHTML

    This letter presents an extension of the Multifamily Likelihood Ratio Test (MFLRT) so it can be applied for detection of a deterministic signal of unknown waveform using measurements from multiple sensors. The extended MFLRT is applied for precipitation detection from noisy measurements of the received signal level (RSL), taken from commercial microwave links (ML). The extended MFLRT shows improve... View full abstract»

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  • Robust Localization With Minimum Number of TDoA Measurements

    Publication Year: 2013, Page(s):949 - 951
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (836 KB) | HTML iconHTML

    This letter looks at the theoretical conditions underpinning unique localization of an emitter using Time-Delay-of-Arrival(TDoA) from minimum number of sensors in 2-D and 3-D space. A discussion is carried out on the unique localization region with the TDoA measurements subjected to a bounded error. For both 2-D and 3-D, error bounds have been found, beyond which, there is no existence of the uniq... View full abstract»

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  • Region of Interest Extraction in Infrared Images Using One-Bit Transform

    Publication Year: 2013, Page(s):952 - 955
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1462 KB) | HTML iconHTML

    This paper presents a novel approach for region of interest (ROI) extraction in infrared images based on the one-bit transform. Potential interest regions in the infrared image are obtained by a target mask that is obtained using the one-bit transform in a local way. The histograms of the original image and the masked image are compared and the histogram region that remains unchanged is used to ob... View full abstract»

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  • Bayesian Estimation of a Gaussian Source in Middleton's Class-A Impulsive Noise

    Publication Year: 2013, Page(s):956 - 959
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1426 KB) | HTML iconHTML

    This letter derives the minimum mean square error (MMSE) Bayesian estimator for a Gaussian source impaired by additive Middleton's Class-A impulsive noise. Additionally, as low-complex alternatives, the letter considers two popular suboptimal estimators, such as the soft-limiter and the blanker. The optimum MMSE thresholds for these suboptimal estimators are obtained by iteratively solving fixed p... View full abstract»

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  • Energy Efficiency of Network Coded Cooperative Communications in Nakagami- m Fading

    Publication Year: 2013, Page(s):960 - 963
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (890 KB) | HTML iconHTML

    In this letter, we evaluate the energy efficiency of a wireless network-coded cooperative system where multiple nodes cooperatively transmit their information to a common destination. The energy consumption of the transmission and reception circuits is taken into account. It is shown that network coding can provide significant energy savings compared to direct transmission and traditional cooperat... View full abstract»

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  • Artificial Noise Generated in MIMO Scenario: Optimal Power Design

    Publication Year: 2013, Page(s):964 - 967
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1133 KB) | HTML iconHTML

    In wireless communication, the transmitter (Alice) can send artificial noise (AN) to interfere with the eavesdropper (Eve). This letter considers the AN MIMO scenario, i.e., both Alice and the legitimate receiver (Bob) are equipped with multiple antennas. A closed-form expression for the lower bound of secrecy capacity is obtained. It is proved that water-filling is the optimal power allocation sc... View full abstract»

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  • A Fast Eigen Solution for Homogeneous Quadratic Minimization With at Most Three Constraints

    Publication Year: 2013, Page(s):968 - 971
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (806 KB) | HTML iconHTML

    We propose an eigenvalue based technique to solve the Homogeneous Quadratic Constrained Quadratic Programming problem (HQCQP) with at most three constraints which arise in many signal processing problems. Semi-Definite Relaxation (SDR) is the only known approach and is computationally intensive. We study the performance of the proposed fast eigen approach through simulations in the context of MIMO... View full abstract»

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  • 3-D Motion Estimation for Visual Saliency Modeling

    Publication Year: 2013, Page(s):972 - 975
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (721 KB) | HTML iconHTML

    Visual saliency is a probabilistic estimate of how likely a spatial area in an image or video frame is to attract human visual attention relative to other areas. When existing bottom-up saliency models aggregate low-level features to construct a plausible saliency map, only 2-D motion cues are used as motion features, even though videos typically capture dynamic 3-D scenes. In this paper, we intro... View full abstract»

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  • Single Bit and Reduced Dimension Diffusion Strategies Over Distributed Networks

    Publication Year: 2013, Page(s):976 - 979
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1369 KB) | HTML iconHTML

    We introduce novel diffusion based adaptive estimation strategies for distributed networks that have significantly less communication load and achieve comparable performance to the full information exchange configurations. After local estimates of the desired data is produced in each node, a single bit of information (or a reduced dimensional data vector) is generated using certain random projecti... View full abstract»

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  • Design of Asymptotically Optimal Unrestricted Polar Quantizer for Gaussian Source

    Publication Year: 2013, Page(s):980 - 983
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (993 KB) | HTML iconHTML

    In this letter, in order to outperform the existing method for unrestricted polar quantizer (UPQ) design in terms of signal to quantization noise ratio, the asymptotic approximations of Rayleigh distributed function are applied to all magnitude regions of the UPQ, except to the last one. Given the constraint, the UPQ is designed to provide the minimum of the asymptotic mean-squared error distortio... View full abstract»

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  • Robust HOSVD-Based Higher-Order Data Indexing and Retrieval

    Publication Year: 2013, Page(s):984 - 987
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1329 KB) | HTML iconHTML

    Higher-order singular value decomposition (HOSVD), a natural multilinear extension of the matrix SVD, computes the orthonormal spaces associated with different modes of the tensor. It is widely employed for feature extraction, dimensionality reduction etc. However, due to the vast quantities of tensor entries involved in calculation, it inevitably suffers from high computational cost, especially w... View full abstract»

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  • Nonrigid Image Deformation Using Moving Regularized Least Squares

    Publication Year: 2013, Page(s):988 - 991
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (594 KB) | HTML iconHTML

    This letter presents an image deformation method based on Moving Regularized Least Squares optimization. The user controls the deformation by simply choosing a set of point handles in the input image, and also the target positions that the source point handles should be deformed to. The deformation function in our method is nonrigid and specified in a functional space, more specifically a reproduc... View full abstract»

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  • Dictionary Learning With Optimized Projection Design for Compressive Sensing Applications

    Publication Year: 2013, Page(s):992 - 995
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1058 KB) | HTML iconHTML

    In this letter, we propose a new method for the joint design of both the projections and the sparsifying dictionary in order to improve signal reconstruction performance in compressive sensing (CS) applications. By capitalizing on the optimized projection matrix design in , which admits a closed-form expression as a function of any overcomplete dictionary, the proposed method does not need to invo... View full abstract»

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  • Salient Motion Detection in Compressed Domain

    Publication Year: 2013, Page(s):996 - 999
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (491 KB) | HTML iconHTML

    We propose a novel motion saliency framework using DCT coefficients and motion vectors as features from MPEG-2 videos. The DCT coefficients of the luma and chroma components are used to calculate the spatial saliency of a frame while the motion vectors are utilized to refine it. Spatio-temporal similarity maps are calculated separately in order to cater to tracking shots. Results show that the pro... View full abstract»

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  • [Blank page - back cover]

    Publication Year: 2013, Page(s): B1000
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  • IEEE Signal Processing Letters information for authors

    Publication Year: 2013, Page(s):1001 - 1002
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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.

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Meet Our Editors

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