发布求助
文献互助 智能选刊 最新文献

2009 17th European Signal Processing Conference最新文献

筛选
英文 中文
Spectrum sensing in multichannel communication systems using randomized sampling schemes 基于随机采样方案的多信道通信系统频谱感知
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41805
B. I. Ahmad, A. Tarczynski
{"title":"Spectrum sensing in multichannel communication systems using randomized sampling schemes","authors":"B. I. Ahmad, A. Tarczynski","doi":"10.5281/ZENODO.41805","DOIUrl":"https://doi.org/10.5281/ZENODO.41805","url":null,"abstract":"This paper studies a spectrum estimation method that utilises Digital Alias-free Signal Processing (DASP) to continuously sense the spectrum in a multichannel communication environment using relatively low sampling rates compared to the classical approaches. Various estimators that use similar concepts are considered. The effect of noise on the accuracy of the chosen detector is analysed. Most importantly, general guidelines on choosing the average sampling rate within a given scenario are provided in order to guarantee sensing reliability. The extra requirement on the needed sampling rate imposed by the presence of noise is given. The analytical results are illustrated by numerical examples.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124610920","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
A comparative study of some greedy pursuit algorithms for sparse approximation 几种稀疏逼近贪心追踪算法的比较研究
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41320
G. Rath, A. Sahoo
{"title":"A comparative study of some greedy pursuit algorithms for sparse approximation","authors":"G. Rath, A. Sahoo","doi":"10.5281/ZENODO.41320","DOIUrl":"https://doi.org/10.5281/ZENODO.41320","url":null,"abstract":"Solving an under-determined system of equations for the sparsest solution has attracted considerable attention in recent years. Among the two well known approaches, the greedy algorithms like matching pursuits (MP) are simpler to implement and can produce satisfactory results under certain conditions. In this paper, we compare several greedy algorithms in terms of the sparsity of the solution vector and the approximation accuracy. We present two new greedy algorithms based on the recently proposed complementary matching pursuit (CMP) and the sensing dictionary framework, and compare them with the classical MP, CMP, and the sensing dictionary approach. It is shown that in the noise-free case, the complementary matching pursuit algorithm performs the best among these algorithms.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128549657","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: 21
Spatial audio coding by squeezing: Analysis and application to compressing multiple soundfields 压缩空间音频编码:多声场压缩的分析与应用
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41405
B. Cheng, C. Ritz, I. Burnett
{"title":"Spatial audio coding by squeezing: Analysis and application to compressing multiple soundfields","authors":"B. Cheng, C. Ritz, I. Burnett","doi":"10.5281/ZENODO.41405","DOIUrl":"https://doi.org/10.5281/ZENODO.41405","url":null,"abstract":"Spatially Squeezed Surround Audio Coding (S3AC) proposed by the authors provides efficient compression of multi-channel surround audio. Compression is achieved by exploiting human sound localisation blur to save the surround soundfield information in a squeezed stereo soundfield. In this paper, the localisation loss during the S3AC analysis/synthesis is evaluated and the minimum size of the S3AC squeezed soundfield is derived in a frequency dependent form. Results from perceptual listening tests show that, compared with standard squeezing from a 360° surround soundfield to a 60° stereo soundfield, a msoundfield, a more intensive squeezing method, such as from 360°-to-5°, does notore intensive squeezing method, such as from 360°-to-5°, does not introduce audible localisation distortion. This leads to a further application of S3AC for compressing more than one surround soundfield into a single stereo downmix for applications such as spatialised teleconferencing. This application is also described and perceptually evaluate.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128180473","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
Antenna array Cramér-Rao bound design by element relocation 天线阵列cramsamr - rao绑定的单元重定位设计
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41789
George P. Gera, B. Mulgrew
{"title":"Antenna array Cramér-Rao bound design by element relocation","authors":"George P. Gera, B. Mulgrew","doi":"10.5281/ZENODO.41789","DOIUrl":"https://doi.org/10.5281/ZENODO.41789","url":null,"abstract":"We consider the use of an arbitrary planar array for direction-of-arrival (DOA) estimation, with the commonly used Cramér-Rao Bound (CRB) as a performance measure. By taking advantage of the cosine structure of the array Fisher information matrix (FIM), the FIM is reformulated to be completely represented by three parameters which depend on the array geometry, leading to a new FIM expression that reflects the impact of individual sensor relocations. The proposed expressions are particularly helpful for finding new sensor positions when given an objective FIM or CRB, and applies in certain more general scenarios. This usefulness is confirmed through the practical application of relocating a single sensor of an arbitrary planar array to achieve an FIM and CRB with given angular distribution.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127292369","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
Dynamic Time Warping for acoustic response interpolation: Possibilities and limitations 声学响应插值的动态时间翘曲:可能性和局限性
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41816
G. Kearney, Claire Masterson, Stephen Adams, F. Boland
{"title":"Dynamic Time Warping for acoustic response interpolation: Possibilities and limitations","authors":"G. Kearney, Claire Masterson, Stephen Adams, F. Boland","doi":"10.5281/ZENODO.41816","DOIUrl":"https://doi.org/10.5281/ZENODO.41816","url":null,"abstract":"We present a novel method for the interpolation of the direct and early reflection components in acoustic impulse responses. The method utilizes Dynamic Time Warping for automated temporal alignment of the sparse reflections. The method is evaluated using a simple acoustic model and its perceptual limitations are presented.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130079423","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: 7
Outage mitigation for GNSS/MEMS navigation using neural networks 利用神经网络缓解GNSS/MEMS导航的中断
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41365
Jean-Rémi De Boer, V. Calmettes, J. Tourneret, B. Lesot
{"title":"Outage mitigation for GNSS/MEMS navigation using neural networks","authors":"Jean-Rémi De Boer, V. Calmettes, J. Tourneret, B. Lesot","doi":"10.5281/ZENODO.41365","DOIUrl":"https://doi.org/10.5281/ZENODO.41365","url":null,"abstract":"Inertial navigation systems (INS) and global navigation satellite systems (GNSS) are often combined to ensure high accuracy navigation. The last generation of inertial measurement units referred to as micro-electro-mechanical systems (MEMS) might also be used in a lot of applications thanks to their relatively low cost. However, the information given by the MEMS is less accurate than with classical INS. In particular, the performance of an integrated GNSS/MEMS navigation systems decreases drastically during GNSS out-ages. This paper studies a neural network based procedure that allows one to compensate this performance loss.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130144249","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 wavelet-based pattern recognition algorithm to classify postural transitions in humans 基于小波的模式识别算法对人体姿势转换进行分类
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41601
A. Fleury, N. Noury, Michel Vacher
{"title":"A wavelet-based pattern recognition algorithm to classify postural transitions in humans","authors":"A. Fleury, N. Noury, Michel Vacher","doi":"10.5281/ZENODO.41601","DOIUrl":"https://doi.org/10.5281/ZENODO.41601","url":null,"abstract":"Elderly people can be monitored at home to detect autonomy issues in their behavior. In addition to the environmental sensors (presence and movements in a room, temperature in the flat, light, etc.), we developed an inertial- and magnetic-based acquisition board to monitor the activity of the person. This article presents a wavelet-based pattern recognition algorithm that works on the data of this acquisition board to detect the postural transitions occurring in the daily life. We constructed four patterns, one for each transition (between Sit and Stand and also Stand and Lying Down); to be able to detect them, and to infer the current posture. To test this algorithm and verify that the patterns are independent of the subject, we asked fifteen people to reproduce a scenario and we present, in the last section of this article, the results obtained. Results of an experiment are also given to show a mean good classification rate of 70% for this method.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129168507","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: 18
Generalized method of moments for blind near efficient carrier phase acquisition 盲近有效载波相位采集的广义矩法
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41678
S. Colonnese, S. Rinauro, G. Scarano
{"title":"Generalized method of moments for blind near efficient carrier phase acquisition","authors":"S. Colonnese, S. Rinauro, G. Scarano","doi":"10.5281/ZENODO.41678","DOIUrl":"https://doi.org/10.5281/ZENODO.41678","url":null,"abstract":"A blind carrier phase estimator based on a suitably weighted phase histogram of the received signal samples is phrased as a particular case of the GeneralizedMoments Method (GMM). More in general, in this contribution, we point out that the estimation of a shift parameter by means of the GMM can be realized using a fast, DFT based, computationally efficient, coarse-to-fine estimation procedure. Furthermore, we develop the statistical analysis needed to extend the estimator to the optimally weighed GMM estimator, i.e. the weighted estimator achieving the minimum estimate variance. The theoretical analysis of the optimally weighted estimator performances is carried out in close form. Finally, the theoretical weighted estimator performances are compared with those of the unweighed estimator, of a state-ofart estimator and of the Cramèr-Rao lower bound. The performance improvement due to the optimal weighting is clearly appreciated, since, at medium to high SNR, it approaches the Cramèr-Rao lower bound on all constellations.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132862408","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
Similarities and differences among filtered multitone modulation realizations and orthogonal filter bank design 滤波多音调制实现与正交滤波器组设计的异同
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41489
N. Moret, A. Tonello
{"title":"Similarities and differences among filtered multitone modulation realizations and orthogonal filter bank design","authors":"N. Moret, A. Tonello","doi":"10.5281/ZENODO.41489","DOIUrl":"https://doi.org/10.5281/ZENODO.41489","url":null,"abstract":"This paper addresses the efficient realization of a filtered multitone (FMT) modulation system and the orthogonal filter bank (FB) design problem. We describe three possible realizations. Although they appear similar, we aim at highlighting the analogies and differences. We then consider the design of an orthogonal FB and we propose a simplified method that is derived from the exploitation of the structure of the first efficient implementation.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130799881","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
Designing Acoustic Vector Sensors for localisation of sound sources in air 设计用于空气中声源定位的声矢量传感器
2009 17th European Signal Processing Conference Pub Date : 2009-08-24 DOI: 10.5281/ZENODO.41414
M. Shujau, C. Ritz, I. Burnett
{"title":"Designing Acoustic Vector Sensors for localisation of sound sources in air","authors":"M. Shujau, C. Ritz, I. Burnett","doi":"10.5281/ZENODO.41414","DOIUrl":"https://doi.org/10.5281/ZENODO.41414","url":null,"abstract":"This paper investigates the design and application of an Acoustic Vector Sensor (AVS), traditionally used for underwater applications, for localisation of sound sources in air. The paper investigates the relation-ship between the design factors and the accuracy of Direction of Arrival (DOA) estimates for sources of varying frequency and compares the performance of an AVS with a Uniform Linear Array (ULA) of comparable size. Results show that the design of the AVS is critical in achieving polar responses that result in DOA estimates of high accuracy. For our proposed design, DOA estimates were found to be more accurate for a range of source frequencies when compared to an existing AVS design and were significantly more accurate than those obtained from a ULA of comparable size.","PeriodicalId":106989,"journal":{"name":"2009 17th European Signal Processing Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130858454","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: 22
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信
小红书