IEEE Signal Processing Letters

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• [Front cover]

Publication Year: 2014, Page(s): C1
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• IEEE Signal Processing Letters publication information

Publication Year: 2014, Page(s): C2
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Publication Year: 2014, Page(s):1307 - 1308
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Publication Year: 2014, Page(s):1309 - 1310
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• Dual-Tone Radio Interferometric Positioning Systems Using Undersampling Techniques

Publication Year: 2014, Page(s):1311 - 1315
Cited by:  Papers (6)
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High accuracy and low cost are challenging requirements for localization in wireless sensor networks (WSNs). The radio interferometric positioning system (RIPS) proposed in aims to meet both requirements at the same time. However, it is vulnerable to channel fading, and suffers from the noise aggravation due to the square operation. In this paper, we propose a dual-tone radio interferometric posit... View full abstract»

• Asymptotical Optimality of Sequential Universal Hypothesis Testing Based on the Method of Types

Publication Year: 2014, Page(s):1316 - 1320
Cited by:  Papers (1)
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In this letter, we introduce a sequential version of universal hypothesis testing, where the goal of the test is not only to decide between the known null hypothesis and some other unknown alternative hypothesis, but also to use a stopping time to stop the test as soon as rejecting the null hypothesis. Motivated by the method of types in information theory, we establish the sequential test by Ho&#... View full abstract»

• Face Sketch Landmarks Localization in the Wild

Publication Year: 2014, Page(s):1321 - 1325
Cited by:  Papers (6)
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In this letter, we propose a method for facial landmarks localization in face sketch images. As recent approaches and the corresponding datasets are designed for ordinary face photos, the performance of such models drop significantly when they are applied on face sketch images. We first propose a scheme to synthesize face sketches from face photos based on random-forests edge detection and local f... View full abstract»

• Variational Justification of Cycle Spinning for Wavelet-Based Solutions of Inverse Problems

Publication Year: 2014, Page(s):1326 - 1330
Cited by:  Papers (4)
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Cycle spinning is a widely used approach for improving the performance of wavelet-based methods that solve linear inverse problems. Extensive numerical experiments have shown that it significantly improves the quality of the recovered signal without increasing the computational cost. In this letter, we provide the first theoretical convergence result for cycle spinning for solving general linear i... View full abstract»

• Spatial Differencing Method for Mixed Far-Field and Near-Field Sources Localization

Publication Year: 2014, Page(s):1331 - 1335
Cited by:  Papers (6)
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In this letter, we present a covariance difference algorithm to cope with the mixed far-field and near-field sources localization problem. By exploiting the eigenstructure differences between the far-field covariance matrix and the near-field one, the spatial differencing technique can be adopted to classify the signals types. Based on the symmetric property of the uniform linear array geometry, a... View full abstract»

• SVD Face: Illumination-Invariant Face Representation

Publication Year: 2014, Page(s):1336 - 1340
Cited by:  Papers (17)
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In this letter, we propose a novel method to extract illumination-invariant features for face recognition and verification under varying illuminations. Inspired by the fact that normalized coefficients of the singular value decomposition (SVD) are insensitive to different illumination conditions, we exploit a simple, yet powerful scheme for describing underlying structures of faces, so-called SVD ... View full abstract»

• Blind Denoising with Random Greedy Pursuits

Publication Year: 2014, Page(s):1341 - 1345
Cited by:  Papers (2)
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Denoising methods require some assumptions about the signal of interest and the noise. While most denoising procedures require some knowledge about the noise level, which may be unknown in practice, here we assume that the signal expansion in a given dictionary has a distribution that is more heavy-tailed than the noise. We show how this hypothesis leads to a stopping criterion for greedy pursuit ... View full abstract»

• Optimizing LBP Structure For Visual Recognition Using Binary Quadratic Programming

Publication Year: 2014, Page(s):1346 - 1350
Cited by:  Papers (22)
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Local binary pattern (LBP) and its variants have shown promising results in visual recognition applications. However, most existing approaches rely on a pre-defined structure to extract LBP features. We argue that the optimal LBP structure should be task-dependent and propose a new method to learn discriminative LBP structures. We formulate it as a point selection problem: Given a set of point can... View full abstract»

• An RIP-Based Approach to $Sigma Delta$ Quantization for Compressed Sensing

Publication Year: 2014, Page(s):1351 - 1355
Cited by:  Papers (6)
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In this letter, we provide a new approach to estimating the error of reconstruction from ΣΔ quantized compressed sensing measurements. Our method is based on the restricted isometry property (RIP) of a certain projection of the measurement matrix. Our result yields simple proofs and a slight generalization of the best-known reconstruction error bounds for Gaussian and subGaussian mea... View full abstract»

• On Secrecy Capacity of Gaussian Wiretap Channel Aided by A Cooperative Jammer

Publication Year: 2014, Page(s):1356 - 1360
Cited by:  Papers (13)
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We study the secrecy capacity of Gaussian wiretap channel aided by an external jammer/helper. Both the transmitter and the intended receiver are equipped with a single antenna, while the eavesdropper and the jammer are equipped with M and N antennas, respectively. Generally, an analytical form of the secrecy capacity in this scenario is difficult to obtain. Instead, we consider a null-space jammin... View full abstract»

• Design of Variable Fractional Delay Filter with Fractional Delay Constraints

Publication Year: 2014, Page(s):1361 - 1364
Cited by:  Papers (2)
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This letter develops an efficient computational procedure for the design of an odd-order variable fractional delay (VFD) digital filter with minimum peak variable fractional delay error subject to restrictions on the peak variable frequency response error. An iterative algorithm is developed to solve the formulated non-linear optimization problem where a first order linear approximation is employe... View full abstract»

• Improved Analysis for Subspace Pursuit Algorithm in Terms of Restricted Isometry Constant

Publication Year: 2014, Page(s):1365 - 1369
Cited by:  Papers (7)
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In the context of compressed sensing (CS), subspace pursuit (SP) is an important iterative greedy recovery algorithm which could reduce the recovery complexity greatly comparing with l1-minimization. Restricted isometry property (RIP) and restricted isometry constant (RIC) of measurement matrices which ensure the convergence of iterative algorithms play key roles for the guarantee of su... View full abstract»

• A Higher-Order MRF Based Variational Model for Multiplicative Noise Reduction

Publication Year: 2014, Page(s):1370 - 1374
Cited by:  Papers (11)
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The Fields of Experts (FoE) image prior model, a filter-based higher-order Markov Random Fields (MRF) model, has been shown to be effective for many image restoration problems. Motivated by the successes of FoE-based approaches, in this letter we propose a novel variational model for multiplicative noise reduction based on the FoE image prior model. The resulting model corresponds to a non-convex ... View full abstract»

• Estimating Speech Spectral Amplitude Based on the Nakagami Approximation

Publication Year: 2014, Page(s):1375 - 1379
Cited by:  Papers (2)
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In this letter, we propose to simplify the estimation of speech spectral amplitude by using the Nakagami distribution to approximate the Rician distribution, a technique widely used in wireless communication. Based on the complex Gaussian assumptions, the a posteriori density of the clean speech spectral amplitude given the noisy speech spectrum follows a Rician distribution. Most state-of-art spe... View full abstract»

• Variable Parallelism Cyclic Redundancy Check Circuit for 3GPP-LTE/LTE-Advanced

Publication Year: 2014, Page(s):1380 - 1384
Cited by:  Papers (5)
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Cyclic Redundancy Check (CRC) is often employed in data storage and communications to detect errors. The 3GPP-LTE wireless communication standard uses a 24-bit CRC with every turbo coded frame, thus, the CRC can be exploited to detect residual errors and to enable early stopping of iterations as well. The current state of the art lacks specific CRC implementations for this standard, and most curre... View full abstract»

• Convex Combination of Adaptive Filters under the Maximum Correntropy Criterion in Impulsive Interference

Publication Year: 2014, Page(s):1385 - 1388
Cited by:  Papers (17)
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A robust adaptive filtering algorithm based on the convex combination of two adaptive filters under the maximum correntropy criterion (MCC) is proposed. Compared with conventional minimum mean square error (MSE) criterion-based adaptive filtering algorithm, the MCC-based algorithm shows a better robustness against impulsive interference. However, its major drawback is the conflicting requirements ... View full abstract»

• Fast Implementation of DeLong’s Algorithm for Comparing the Areas Under Correlated Receiver Operating Characteristic Curves

Publication Year: 2014, Page(s):1389 - 1393
Cited by:  Papers (6)
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Among algorithms for comparing the areas under two or more correlated receiver operating characteristic (ROC) curves, DeLong's algorithm is perhaps the most widely used one due to its simplicity of implementation in practice. Unfortunately, however, the time complexity of DeLong's algorithm is of quadratic order (the product of sample sizes), thus making it time-consuming and impractical when the ... View full abstract»

• ${L^1}$ Control Theoretic Smoothing Splines

Publication Year: 2014, Page(s):1394 - 1397
Cited by:  Papers (1)
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In this letter, we propose control theoretic smoothing splines with L1 optimality for reducing the number of parameters that describes the fitted curve as well as removing outlier data. A control theoretic spline is a smoothing spline that is generated as an output of a given linear dynamical system. Conventional design requires exactly the same number of base functions as given data, a... View full abstract»

• Low-Complexity Energy Efficiency Optimization with Statistical CSI in Two-Hop MIMO Systems

Publication Year: 2014, Page(s):1398 - 1402
Cited by:  Papers (7)
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Energy-efficient resource allocation in a single-user, amplify-and-forward (AF), relay-assisted, multiple-input-multiple-output (MIMO) system is considered in this paper. Previous results in this area assume that perfect CSI is available for at least one of the source-relay and relay-destination channels. Instead, the case in which statistical CSI is available for both the source-relay and relay-d... View full abstract»

• Moving Object Detection Based on Temporal Information

Publication Year: 2014, Page(s):1403 - 1407
Cited by:  Papers (8)
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This letter presents an automatic moving object detection method in image sequences captured from videos. While we focus on extracting moving objects throughout a frame sequence, our approach does not require any prior knowledge such as the background modeling nor the interaction by users such as empirical thresholds tuning. Based on the continuous symmetric difference of the adjacent frames, we g... View full abstract»

• Efficient Estimation of Linear Parameters from Correlated Node Measurements over Networks

Publication Year: 2014, Page(s):1408 - 1412
Cited by:  Papers (2)
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We investigate the performance of distributed estimation of static parameters in networks whose nodes make correlated measurements. The measurement models are linear with node specific time-varying observation matrices. The nodes cooperate with their neighbors by exchanging information that allow for approximation of the sufficient statistics in the estimation. We prove that the proposed estimatio... View full abstract»

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