International Workshop on Systems, Signal Processing and their Applications, WOSSPA最新文献_第7页

Low complexity image compression algorithm using AMBTC and bit plane squeezing 基于AMBTC和位平面压缩的低复杂度图像压缩算法

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931432

Saad Al-Azawi, S. Boussakta, Alexandre Yakovlev

引用次数: 4

An iterative speech encryption scheme based on subspace technique 一种基于子空间技术的迭代语音加密方案

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931512

Atef Mermoul

引用次数: 6

Multiple target tracking and classification using the unscented probability hypothesis density filter 基于无气味概率假设密度滤波的多目标跟踪与分类

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931461

M. Melzi, A. Ouldali, Z. Messaoudi

{"title":"Multiple target tracking and classification using the unscented probability hypothesis density filter","authors":"M. Melzi, A. Ouldali, Z. Messaoudi","doi":"10.1109/WOSSPA.2011.5931461","DOIUrl":"https://doi.org/10.1109/WOSSPA.2011.5931461","url":null,"abstract":"Tracking an unknown and time varying number of targets is a difficult issue. The Unscented Probability Hypothesis Density Filter (UKPHD) tackles this problem, moreover, it allows the estimation of both the number of targets and their states without any data association steps by considering the target states as a single global target state, its a closed-form solution for the probability hypothesis density (PHD) filter that deals with non linear systems, it propagates the first-order moment of the multitarget posterior instead of the posterior distribution itself because evaluating the multiple-target posterior distribution is currently computationally intractable for real-time applications in multiple Target tracking problems. However, targets are poorly described by a single dynamic model, in fact, they may change their kinematic model at any time which makes the tracking algorithm incapable of estimating efficiently the true trajectories. The Interacting Multiple Model (IMM) algorithm is used to address this. The IMM uses multiple models to describe targets behavior and adaptively determines which model(s) are the most appropriate at each time step. In this paper, we present a new interacting multiple model Unscented probability hypothesis density filter (IMM-UKPHD) to deal with the problem of tracking a time varying number of maneuvering targets. In our approach, a bank of Unscented probability hypothesis density filters is used in the interacting multiple model (IMM) framework for updating the state of moving targets. Simulation results show the efficiency of the proposed algorithm.","PeriodicalId":343415,"journal":{"name":"International Workshop on Systems, Signal Processing and their Applications, WOSSPA","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116757379","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Obstacle detection with 3D camera using U-V-Disparity 使用u - v -视差的3D相机障碍物检测

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931462

Yuan Gao, X. Ai, J. Rarity, N. Dahnoun

引用次数: 12

Elliptic Curve Cryptography and its applications 椭圆曲线密码及其应用

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931464

M. Amara, Amar Siad

引用次数: 92

LSF-CMA based blind equalization algorithms for MC-CDMA systems 基于LSF-CMA的MC-CDMA系统盲均衡算法

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931452

A. B. Djebbar

引用次数: 1

Performance limitations of an optical RZ-DPSK transmission system affected by frequency chirp, chromatic dispersion and polarization mode dispersion 频率啁啾、色散和偏振模色散对RZ-DPSK光传输系统性能限制的影响

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931440

L. Kassa-Baghdouche, L. M. Simohamed

{"title":"Performance limitations of an optical RZ-DPSK transmission system affected by frequency chirp, chromatic dispersion and polarization mode dispersion","authors":"L. Kassa-Baghdouche, L. M. Simohamed","doi":"10.1109/WOSSPA.2011.5931440","DOIUrl":"https://doi.org/10.1109/WOSSPA.2011.5931440","url":null,"abstract":"The performance limitations due to the combined effects of frequency chirp and CD or PMD in a 40 Gbit/s optical Return-to-Zero Differential Phase-Shift-Keying (RZ-DPSK) transmission system are numerically simulated. By means of numerical simulations, we optimize the bandwidths of the optical and electrical receiver's filters. Then, the impact of the Chirp factor (C) on the Bit Error Rate (BER) performance is analyzed when the received signal is filtered by two types of optical filter (Fabry-Perot filter (FP) or Fiber Bragg Grating filter (FBG)). The optical power penalties caused by the Frequency Chirp impact at BER of 10−9 in the presence of CD or PMD are evaluated. Simulation results show that, without CD and PMD the system suffer a significant amount of power penalties due to the Chirp factor, and the optical filter has no influence on the power penalties. However, it is found that with CD or PMD, the optical filter has significant influence on the power penalty, and with CD the system which uses FBG filter always performs better than the one which uses FP filter, whereas with PMD the better performances switch from FBG filter to FP filter. This provides the basis for tradeoff between FP and FBG filter performances through careful selection of a suitable optical filter to high speed optical transmission system.","PeriodicalId":343415,"journal":{"name":"International Workshop on Systems, Signal Processing and their Applications, WOSSPA","volume":"117 31","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113945928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

On the diversity of the Naive Lattice Decoder 朴素格解码器的多样性

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931516

Asma Mejri, Laura Luzzi, G. R. Othman

{"title":"On the diversity of the Naive Lattice Decoder","authors":"Asma Mejri, Laura Luzzi, G. R. Othman","doi":"10.1109/WOSSPA.2011.5931516","DOIUrl":"https://doi.org/10.1109/WOSSPA.2011.5931516","url":null,"abstract":"“Naive Lattice Decoding” (NLD) and its low-complexity approximations such as lattice reduction-aided linear decoders represent an alternative to Maximum Likelihood lattice decoders for MIMO systems. Their diversity order has been investigated in recent works. These showed that the NLD achieves only the receive diversity and that MMSE-GDFE left preprocessing followed by NLD or its approximations achieves the maximum diversity. All the theoretical results have so far focused on the diversity order but this is not the only relevant parameter to achieve good performance and the coding gain also needs to be considered. In addition, up to now there has not been any numerical analysis of the actual performance of these techniques for the coded systems for moderate SNR. In this paper, we consider MIMO systems using high-dimensional perfect space-time codes. We show that by adding MMSE-GDFE preprocessing, the NLD has a loss of only 1.5 dB with respect to optimal decoding in the case of the Perfect Code 4×4. However, even with MMSE-GDFE preprocessing, the performance of lattice-reduction aided linear receivers is still very poor for high-dimensional lattices.","PeriodicalId":343415,"journal":{"name":"International Workshop on Systems, Signal Processing and their Applications, WOSSPA","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129896354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

An improper random vector approach for ESPRIT and unitary ESPRIT frequency estimation 一种不合适的ESPRIT随机向量方法和单一ESPRIT频率估计

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931478

G. Bouleux, Thameur Kidar, F. Guillet

引用次数: 1

An efficient fast integer DCT transform for images compression with 16 additions only 一个有效的快速整数DCT变换图像压缩与16加法只有

International Workshop on Systems, Signal Processing and their Applications, WOSSPA Pub Date : 2011-05-09 DOI: 10.1109/WOSSPA.2011.5931415

Nabila Brahimi, S. Bouguezel

引用次数: 14