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# IEEE Signal Processing Letters

## Filter Results

Displaying Results 1 - 25 of 29
• ### [Front cover]

Publication Year: 2010, Page(s): C1
| PDF (178 KB)
• ### IEEE Signal Processing Letters publication information

Publication Year: 2010, Page(s): C2
| PDF (39 KB)

Publication Year: 2010, Page(s):525 - 526
| PDF (48 KB)
• ### Relationships Between $Psi _{ {tt B}}$-Energy Operator and Some Time-Frequency Representations

Publication Year: 2010, Page(s):527 - 530
Cited by:  Papers (4)
| | PDF (261 KB) | HTML

ΨB operator is an energy operator that measures the interactions between two complex signals. In this letter, new properties of ΨB operator are presented. Connections between ΨB operator and some time-frequency representations (cross-ambiguity function, short-time Fourier transform, Zak transform, and Gabor coefficients) are established. Lin... View full abstract»

• ### Performance Analysis of Partial Relay Selection With Feedback Delay

Publication Year: 2010, Page(s):531 - 534
Cited by:  Papers (77)
| | PDF (167 KB) | HTML

We analyze the impact of outdated channel state information due to feedback delay on the performance of amplify-and-forward relays with the kth worst partial relay selection scheme. In our analysis, new expressions for the system's outage probability and the average bit error rate are derived. The effects of the rank of the relay chosen, the average SNR imbalance, and the correlation betwee... View full abstract»

• ### On the Combination of Cooperative Diversity and Multiuser Diversity in Multi-Source Multi-Relay Wireless Networks

Publication Year: 2010, Page(s):535 - 538
Cited by:  Papers (44)
| | PDF (194 KB) | HTML

This letter presents an analysis of the combined use of cooperative diversity and multiuser diversity (MUD) in multi-source multi-relay networks. A joint selection scheme, which selects the best source-relay pair to access the channel, is proposed. The main contribution of our work is the derivation of the exact and asymptotic expressions for the outage probability of the system with amplify-and-f... View full abstract»

• ### Blind Unique Identification of MIMO Channels Using Signal Designs and High-Order Moments

Publication Year: 2010, Page(s):539 - 542
Cited by:  Papers (6)
| | PDF (276 KB) | HTML

In this letter, a necessary and sufficient condition is developed to check whether a set of polynomial equations is solvable. Furthermore, under the sufficient condition, a closed-form solution is attained using linear Diophantine equation theory. With this, a novel signal design and a row-circular transmission scheme of phase shift keying (PSK) constellations for MIMO flat fading channels are pro... View full abstract»

• ### Bark Frequency Transform Using an Arbitrary Order Allpass Filter

Publication Year: 2010, Page(s):543 - 546
Cited by:  Papers (3)
| | PDF (419 KB) | HTML

We propose an arbitrary order stable allpass filter structure for frequency transformation from Hertz to Bark scale. According to the proposed filter structure, the first order allpass filter is causal, but the second and higher order allpass filters are non-causal. We find that the accuracy of the transformation significantly improves when a second or higher order allpass filter is designed compa... View full abstract»

• ### Bit-Error Aware Lossless Compression of Waveform Data

Publication Year: 2010, Page(s):547 - 550
| | PDF (228 KB) | HTML

In this letter, we propose simple bit-error aware lossless compression algorithms for compression and transmission of waveform data in noisy channels. The developed algorithms consist of two stages. The first stage applies linear prediction and the second stage uses the developed residue coder, bi-level block coding or interval entropy coding, in which we show how to choose the optimal coding para... View full abstract»

• ### Spectral Moment Features Augmented by Low Order Cepstral Coefficients for Robust ASR

Publication Year: 2010, Page(s):551 - 554
Cited by:  Papers (10)
| | PDF (739 KB) | HTML

We propose a novel Automatic Speech Recognition (ASR) front-end, that consists of the first central Spectral Moment time-frequency distribution Augmented by low order Cepstral coefficients (SMAC). We prove that the first central spectral moment is proportional to the spectral derivative with respect to the filter's central frequency. Consequently, the spectral moment is an estimate of the frequenc... View full abstract»

• ### Statistical-Based Tracking Technique for Linear Structures Detection: Application to Vessel Segmentation in Medical Images

Publication Year: 2010, Page(s):555 - 558
Cited by:  Papers (12)
| | PDF (464 KB) | HTML

Linear structures such as blood vessels in medical images are important features for computer-aided diagnosis and follow-up of many diseases. In this letter a new tracking-based segmentation method is proposed to detect blood vessels in retinal images. Bayesian segmentation with the Maximum a posteriori (MAP) Probability criterion is used for that purpose. Tests on simulated and retinal ima... View full abstract»

• ### Distance Estimation With Weighted Least Squares for Mobile Beacon-Based Localization in Wireless Sensor Networks

Publication Year: 2010, Page(s):559 - 562
Cited by:  Papers (13)
| | PDF (264 KB) | HTML

In large-scale sensor networks, localization with mobile beacons is one of the most efficient ways to deploy sensor nodes as well as locate them. Direct communication with mobile beacons has an advantage of improvement in location accuracy by enabling sensor nodes to measure distances to the mobile beacons. Thus, it is important to improve the accuracy in the distance for high accurate positioning... View full abstract»

• ### Game Theoretic Multimode Precoding Strategy Selection for MIMO Multiple Access Channels

Publication Year: 2010, Page(s):563 - 566
Cited by:  Papers (25)
| | PDF (396 KB) | HTML

This paper is concerned with decentralized selection of multimode precoding strategy for multiple-input multiple-output (MIMO) multiple access channels. We formulate it as a discrete noncooperative game. This game is shown to possess at least one pure strategy Nash equilibrium (NE) and the optimal strategy profile which maximizes the sum rate constitutes a pure strategy NE. Then we propose a decen... View full abstract»

• ### Efficient Generalized Integer Transform for Reversible Watermarking

Publication Year: 2010, Page(s):567 - 570
Cited by:  Papers (77)  |  Patents (2)
| | PDF (341 KB) | HTML

In this letter, an efficient integer transform based reversible watermarking is proposed. We first show that Tian's difference expansion (DE) technique can be reformulated as an integer transform. Then, a generalized integer transform and a payload-dependent location map are constructed to extend the DE technique to the pixel blocks of arbitrary length. Meanwhile, the distortion can be controlled ... View full abstract»

• ### OFDM Transmission for Time-Based Range Estimation

Publication Year: 2010, Page(s):571 - 574
Cited by:  Papers (18)
| | PDF (175 KB) | HTML

OFDM is proposed for time-based range estimation (TBRE) and analyzed with respect to its accuracy, both theoretically, in terms of its Cramer-Rao lower bound (CRLB), and practically, in terms of its maximum likelihood estimator (MLE). The CRLB for OFDM transmission is compared to that for pseudo-noise (PN) transmission, demonstrating a large performance gap in favour of OFDM. Moveover, the MLE for... View full abstract»

• ### Including Spatial Correlations in the Statistical MIMO Radar Target Model

Publication Year: 2010, Page(s):575 - 578
Cited by:  Papers (4)
| | PDF (510 KB) | HTML

Previous studies of statistical MIMO radar detection performance have used a target model that consists of a large number of point scatterers located within a rectangular target area. These point scatterers have scattering amplitudes that are complex random variables and are spatially uncorrelated, so that the target is a white noise process in space. Spatial correlations are introduced into the t... View full abstract»

• ### A Simple Approach to Multiview Face Hallucination

Publication Year: 2010, Page(s):579 - 582
Cited by:  Papers (16)
| | PDF (1202 KB) | HTML

Most face hallucination methods are usually limited to frontal face with small pose variations. This letter presents a simple and efficient multiview face hallucination (MFH) method to generate high-resolution (HR) multiview faces from a single given low-resolution (LR) one. The problem is addressed in two steps. A simple face transformation method is proposed by defining a constrained least squar... View full abstract»

• ### A DCT Statistics-Based Blind Image Quality Index

Publication Year: 2010, Page(s):583 - 586
Cited by:  Papers (131)  |  Patents (3)
| | PDF (535 KB) | HTML

The development of general-purpose no-reference approaches to image quality assessment still lags recent advances in full-reference methods. Additionally, most no-reference or blind approaches are distortion-specific, meaning they assess only a specific type of distortion assumed present in the test image (such as blockiness, blur, or ringing). This limits their application domain. Other approache... View full abstract»

• ### A New Adaptive Switching Median Filter

Publication Year: 2010, Page(s):587 - 590
Cited by:  Papers (54)
| | PDF (1729 KB) | HTML

A new Adaptive Switching Median (ASWM) filter for removing impulse noise from corrupted images is presented. The originality of ASWM is that no a priori Threshold is needed as in the case of a classical Switching Median filter. Instead, Threshold is computed locally from image pixels intensity values in a sliding window. Results show that ASWM provides better performance in terms of PSNR and MAE t... View full abstract»

• ### Cost-Sensitive Rank Learning From Positive and Unlabeled Data for Visual Saliency Estimation

Publication Year: 2010, Page(s):591 - 594
Cited by:  Papers (10)
| | PDF (298 KB) | HTML

This paper presents a cost-sensitive rank learning approach for visual saliency estimation. This approach avoids the explicit selection of positive and negative samples, which is often used by existing learning-based visual saliency estimation approaches. Instead, both the positive and unlabeled data are directly integrated into a rank learning framework in a cost-sensitive manner. Compared with e... View full abstract»

• ### Generalized Sampling Expansion for Bandlimited Signals Associated With the Fractional Fourier Transform

Publication Year: 2010, Page(s):595 - 598
Cited by:  Papers (39)
| | PDF (114 KB) | HTML

The aim of the generalized sampling expansion (GSE) is the reconstruction of an unknown continuously defined function f(t), from the samples of the responses of M linear time invariant (LTI) systems, each sampled by the 1/M th Nyquist rate. In this letter, we investigate the GSE in the fractional Fourier transform (FRFT) domain. Firstly, the GSE for fractional bandlimit... View full abstract»

• ### Temporally Weighted Linear Prediction Features for Tackling Additive Noise in Speaker Verification

Publication Year: 2010, Page(s):599 - 602
Cited by:  Papers (32)
| | PDF (387 KB) | HTML

Text-independent speaker verification under additive noise corruption is considered. In the popular mel-frequency cepstral coefficient (MFCC) front-end, the conventional Fourier-based spectrum estimation is substituted with weighted linear predictive methods, which have earlier shown success in noise-robust speech recognition. Two temporally weighted variants of linear predictive modeling are intr... View full abstract»

• ### Stability Analysis for the Generalized Sidelobe Canceller

Publication Year: 2010, Page(s):603 - 606
Cited by:  Papers (3)
| | PDF (268 KB) | HTML Media

One approach for reducing noise from non-target locations in array beamformer applications is to use an adaptive noise cancellation algorithm referred to as the Generalized Sidelobe Canceller (GSC). An analysis is performed to derive a closed-form expression showing the relationship between stability, the number of array channels, adaptive step size ??, and forgetting factor ??. The result is veri... View full abstract»

• ### Self-Organizing Maps for Topic Trend Discovery

Publication Year: 2010, Page(s):607 - 610
Cited by:  Papers (4)  |  Patents (1)
| | PDF (353 KB) | HTML

The large volume of data on the Internet makes it extremely difficult to extract high-level information, such as recurring or time-varying trends in document content. Dimensionality reduction techniques can be applied to simplify the analysis process but the amount of data is still quite large. If the analysis is restricted to just text documents then Latent Dirichlet Allocation (LDA) can be used ... View full abstract»

• ### Efficient Approach for Sinusoidal Frequency Estimation of Gapped Data

Publication Year: 2010, Page(s):611 - 614
Cited by:  Papers (14)
| | PDF (236 KB) | HTML

The problem of frequency estimation for noisy sinusoidal signals from multiple segments or channels, which are referred to as gapped data, is addressed. Based on linear prediction and weighted least squares techniques, an iterative relaxation-based frequency estimator is devised and analyzed. The proposed algorithm is also extended to harmonically related frequencies. Computer simulations are cond... 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