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International Symposium on Signals, Circuits and Systems ISSCS2013最新文献

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Improving block-based compensated wavelet lifting by reconstructing unconnected pixels 通过重构未连通像素改进基于块的补偿小波提升
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651186
Wolfgang Schnurrer, Jürgen Seiler, André Kaup
{"title":"Improving block-based compensated wavelet lifting by reconstructing unconnected pixels","authors":"Wolfgang Schnurrer, Jürgen Seiler, André Kaup","doi":"10.1109/ISSCS.2013.6651186","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651186","url":null,"abstract":"This paper presents a new approach for improving the visual quality of the lowpass band of a compensated wavelet transform. A high quality of the lowpass band is very important as it can then be used as a downscaled version of the original signal. To adapt the transform to the signal, compensation methods can be implemented directly into the transform. We propose an improved inversion of the block-based motion compensation by processing unconnected pixels by a reconstruction method. We obtain a better subjective visual quality while furthermore saving up to 2.6% of bits for lossless coding.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115770738","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: 5
Bundled software for simulation modeling 用于仿真建模的捆绑软件
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651179
D. Dubinin, V. Geringer, A. Kochegurov, K. Reif
{"title":"Bundled software for simulation modeling","authors":"D. Dubinin, V. Geringer, A. Kochegurov, K. Reif","doi":"10.1109/ISSCS.2013.6651179","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651179","url":null,"abstract":"The paper is dedicated to issues of special software development for stochastic modeling “CS sF”. It considers the short description of the software features, a generalized block diagram “CS sF”, series of morphologies of obtained space-time signals (STS) and their bitmap images. The numerical simulations results of generated STS statistical processing are presented. The directions of perspective research are formulated. The possibility of theoretical information analysis of STS provided by this software is shown. The results of a numerical experiment set based on stochastic simulation package “CS sF” are given.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124928921","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: 4
A novel parallel motion estimation algorithm based on Particle Swarm Optimization 一种新的基于粒子群优化的并行运动估计算法
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651215
Manal Jalloul, M. A. Al-Alaoui
{"title":"A novel parallel motion estimation algorithm based on Particle Swarm Optimization","authors":"Manal Jalloul, M. A. Al-Alaoui","doi":"10.1109/ISSCS.2013.6651215","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651215","url":null,"abstract":"Motion estimation is a common tool used in all video coding standards. Fast and accurate algorithms are needed to target the real-time processing requirements of emerging applications. Many fast-search block motion estimation algorithms have been developed to reduce the computational cost required by the full-search algorithm. These techniques however often converge to a local minimum, which makes them subject to noise and matching errors. In the literature, several schemes were proposed to employ strategies of Particle Swarm Optimization (PSO) in the problem of motion estimation since PSO promises to alleviate the problem of being trapped in local minima. The existing schemes, however, still don't achieve the necessary improvement in terms of accuracy or speedup as compared to the existing fast searching methods. In this paper, we propose a novel fast and accurate block motion estimation scheme based on an improved parallel Particle Swarm Optimization algorithm. Unlike existing motion estimation algorithms which operate on blocks of the frame serially following the raster order, the proposed algorithm achieves parallelism since it performs motion estimation for all blocks of the frame in parallel. Simulation results showed that the proposed scheme could provide a higher accuracy and a remarkable speedup as compared to the well-known fast searching techniques and to a recent PSO-based motion estimation algorithm.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122930195","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: 10
An accurate, low impedance, low dropout sub-V bandgap reference 一个精确的，低阻抗，低差的亚v带隙基准
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651183
Kin Keung Jeff Lau
{"title":"An accurate, low impedance, low dropout sub-V bandgap reference","authors":"Kin Keung Jeff Lau","doi":"10.1109/ISSCS.2013.6651183","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651183","url":null,"abstract":"A compact, accurate sub-1V low impedance, low dropout bandgap reference is presented in this paper. Firstly, a new 1V bandgap core (corel) is introduced by the simple addition of two resistors to the generic core. Using this concept, an improved version (core 2) is presented to generate a sub-1V(0.9V in the design example) bandgap reference that can be set from a bit above Vbe, up to the normal bandgap voltage. Both cores are in low dropout and low output impedance configurations. The circuit idea is realized in 90nm BiCMOS technology. Simulation results show that over a 200oC temperature range, core 1 can achieve 20ppm over line and load regulation. Core 2 can achieve 15ppm over line and load regulation. Both cores can be realized in a CMOS process using parasitic PNP devices.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125181250","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: 2
Emotion recognition in audio records 音频记录中的情感识别
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651236
I. Pavaloi, E. Musca, F. Rotaru
{"title":"Emotion recognition in audio records","authors":"I. Pavaloi, E. Musca, F. Rotaru","doi":"10.1109/ISSCS.2013.6651236","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651236","url":null,"abstract":"A novel approach to find the combination of acoustic features producing a more robust automatic recognition of a speaker emotion is proposed. Four discrete emotional states are classified. The emotional speech corpora used for training and evaluation are described in detail. The emotion recognition model using acoustic features is presented. The results achieved are presented and discussed.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115418955","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: 8
Novel wide band digital differentiators and integrators using different optimization techniques 采用不同优化技术的新型宽带数字微分器和积分器
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651225
M. A. Al-Alaoui, M. Baydoun
{"title":"Novel wide band digital differentiators and integrators using different optimization techniques","authors":"M. A. Al-Alaoui, M. Baydoun","doi":"10.1109/ISSCS.2013.6651225","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651225","url":null,"abstract":"This work presents new IIR digital differentiators of first and higher orders based on optimizing the Al-Alaoui integrator using Simulated Annealing, Genetic Algorithms, and Fletcher and Powell Optimization. The work notes the idea that inverting an optimized integrator does not necessarily lead to an optimized differentiator since the work starts with the differentiators as opposed to starting with the integrators which is not the norm in previous works. The proposed differentiators are compared with many available differentiators and are proven to be of considerable accuracy. These differentiators are afterwards inverted and transformed into digital integrators of same orders.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129520980","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: 40
A study of time synchronization for WiMAX wireless systems WiMAX无线系统的时间同步研究
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651243
Hamad M. Alhajri, D. Popescu
{"title":"A study of time synchronization for WiMAX wireless systems","authors":"Hamad M. Alhajri, D. Popescu","doi":"10.1109/ISSCS.2013.6651243","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651243","url":null,"abstract":"Worldwide Interoperability for Microwave Access (WiMAX) is a standard for fourth generation (4G) wireless communication systems that is based on Orthogonal Frequency Division Multiplexing (OFDM). In this paper we study the use of Maximum Correlation and Minimum Difference methods for estimating time offsets in OFDM systems and present their application to time synchronization for WiMAX transmissions. Bit Error Rate (BER) plots obtained from simulations are presented to evaluate system performance.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124364969","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: 0
RNSIC-1 based wind energy conversion 基于RNSIC-1的风能转换
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651216
A. Alexandrescu, T. Goras, D. Alexa, I. Pletea, P. Matasaru
{"title":"RNSIC-1 based wind energy conversion","authors":"A. Alexandrescu, T. Goras, D. Alexa, I. Pletea, P. Matasaru","doi":"10.1109/ISSCS.2013.6651216","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651216","url":null,"abstract":"This paper presents a novel converter configuration using a rectifier with near sinusoidal input currents. The converter is based on a RNSIC -1 topology having DC capacitors connected in parallel with the diodes. The research has been focused on load current variations. The main advantages of the proposed method consist of increased efficiency, lower EMI, low harmonic input currents, better reliability and more competitive costs. The original version can be used as well in the case of small hydro interconnection with induction generator (SCIG) and cvasi-variable speed wind turbine (~60-100% sync speed).","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"176 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114008814","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: 0
Parallel approach for multifocus image fusion 多焦点图像融合的并行方法
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651212
S. Bejinariu, F. Rotaru, C. Nita, R. Luca
{"title":"Parallel approach for multifocus image fusion","authors":"S. Bejinariu, F. Rotaru, C. Nita, R. Luca","doi":"10.1109/ISSCS.2013.6651212","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651212","url":null,"abstract":"A parallel approach of multifocus image fusion is proposed. Most of parallelization techniques for image processing and image fusion presented in literature are based on the use of graphic processor (GPU) computing power or the message passing interface (MPI) paradigm. Quite a few are exploiting the capabilities offered by the multi-core processors. This paper presents two parallelized methods for multifocus image fusion. The first one is based on the spatial frequency evaluation at pixel level and the second uses the morphological wavelet decomposition. An efficiency evaluation is presented for the case of implementation on multi-core processors.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130084695","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: 4
A 84-db wideband low-power variable gain amplifier 84-db宽带低功率可变增益放大器
International Symposium on Signals, Circuits and Systems ISSCS2013 Pub Date : 2013-07-11 DOI: 10.1109/ISSCS.2013.6651221
E. Belousov, K. Lomovskaya
{"title":"A 84-db wideband low-power variable gain amplifier","authors":"E. Belousov, K. Lomovskaya","doi":"10.1109/ISSCS.2013.6651221","DOIUrl":"https://doi.org/10.1109/ISSCS.2013.6651221","url":null,"abstract":"A wideband CMOS variable gain amplifier (VGA) with a wide gain tuning range for automatic gain control (AGC) in wireless communication systems is presented in this article. The VGA shows a maximum gain variation of 84 dB, its -3 dB bandwidth is 600 MHz at a maximum gain of 40 dB and 1.6 GHz at a minimum gain of -44 dB. The VGA gain is adjusted by applying external control voltage at the range of 350 mV to 1.6 V and is varied within 84 dB. The design's parameters were calculated and simulated for 180-nm CMOS technology. The VGA drains 4.5 mA from 1.8 V supply thus dissipating 8.1 mW.","PeriodicalId":260263,"journal":{"name":"International Symposium on Signals, Circuits and Systems ISSCS2013","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128267946","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: 5
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