Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728393
A. Qazi, B.U. Afsheen, C.L.K. Stergioulas, D.A. Blazevich
The paper explores the application of instantaneous frequency (IF) analysis on EMG signals measured voluntarily across a period of 10 week physical training. The aim is to explore the effects of training on the muscle fiber recruitment strategy. The findings are presented and discussed, which suggest a link between training and motor unit synchronization. The paper also show-cases the effectiveness of IF methods for EMG data analysis.
{"title":"Instantaneous Frequency based Study of the Effects of Physical Training on Muscle Fiber Recruitment Strategy","authors":"A. Qazi, B.U. Afsheen, C.L.K. Stergioulas, D.A. Blazevich","doi":"10.1109/ICSPC.2007.4728393","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728393","url":null,"abstract":"The paper explores the application of instantaneous frequency (IF) analysis on EMG signals measured voluntarily across a period of 10 week physical training. The aim is to explore the effects of training on the muscle fiber recruitment strategy. The findings are presented and discussed, which suggest a link between training and motor unit synchronization. The paper also show-cases the effectiveness of IF methods for EMG data analysis.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124404233","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728565
S. Hamouda, P. Godlewski, S. Tabbane
In this paper, we present new results regarding stability and radio capacity in UMTS system. We examine both uplink and downlink cases. We particularly give an upper bound of system stability in the uplink according to activity and inter-to-intracellular interference factors. We show that if the entire system is not very loaded and the activity is low, and if the SINR target is high, the probability that the uplink transmit power exceeds the maximum allowed value is around 5%. As for the downlink, we examine the impact of the users' distribution in the radio capacity as well as the system stability. Simulation results proved that the downlink radio capacity can be lessened by almost the third according to the users' distribution in the cell. More importantly, the system can reach the asymptotic capacity in 20% of the cases because of users' location in the cell.
{"title":"On Stability and Radio Capacity in UMTS System","authors":"S. Hamouda, P. Godlewski, S. Tabbane","doi":"10.1109/ICSPC.2007.4728565","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728565","url":null,"abstract":"In this paper, we present new results regarding stability and radio capacity in UMTS system. We examine both uplink and downlink cases. We particularly give an upper bound of system stability in the uplink according to activity and inter-to-intracellular interference factors. We show that if the entire system is not very loaded and the activity is low, and if the SINR target is high, the probability that the uplink transmit power exceeds the maximum allowed value is around 5%. As for the downlink, we examine the impact of the users' distribution in the radio capacity as well as the system stability. Simulation results proved that the downlink radio capacity can be lessened by almost the third according to the users' distribution in the cell. More importantly, the system can reach the asymptotic capacity in 20% of the cases because of users' location in the cell.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125195537","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728376
N. Alzeidi, M. Ould-Khaoua, J. Ferguson
Previous studies have shown that when the network is subject to the pin-out constraint, the network topology exhibiting the best performance depends on the network size. These studies have assumed single flit buffers. Deploying finite size buffers, however, may add extra complexity to the router design and hence will influence the cost and the performance of the network. This paper reinvestigates analytically the relative performance merits of different k-ary n-cube topologies combining wormhole switching, adaptive routing, multiple virtual channels and finite size buffers. The results reveal new insights demonstrating the sensitivity of these studies to the level of detail and realism incorporated in the analysis.
{"title":"Hypercube versus Torus under Pin-Out Constraint and Finite Buffers","authors":"N. Alzeidi, M. Ould-Khaoua, J. Ferguson","doi":"10.1109/ICSPC.2007.4728376","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728376","url":null,"abstract":"Previous studies have shown that when the network is subject to the pin-out constraint, the network topology exhibiting the best performance depends on the network size. These studies have assumed single flit buffers. Deploying finite size buffers, however, may add extra complexity to the router design and hence will influence the cost and the performance of the network. This paper reinvestigates analytically the relative performance merits of different k-ary n-cube topologies combining wormhole switching, adaptive routing, multiple virtual channels and finite size buffers. The results reveal new insights demonstrating the sensitivity of these studies to the level of detail and realism incorporated in the analysis.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116990073","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728484
A. S. Narote, S. P. Narote, L. Waghmare, M. Kokare
This paper represents a new method for iris recognition using the dual tree complex wavelet transform. For the dual filter tree, we select two linear phase biorthogonal filter sets with odd and even lengths which is used to filter each signal for quantization to 136 byte iris feature codes. Then the Hamming distance is adopted to match two iris codes. In particular, the appropriate scale for each signal is searched for by minimizing the Hamming distance. The experimental results on CASIA database shows reliability and performance that the performance of this method is better than some algorithms, so it is promising to be used in a personal identification system.
{"title":"Robust Iris Feature Extraction using Dual Tree Complex Wavelet Transform","authors":"A. S. Narote, S. P. Narote, L. Waghmare, M. Kokare","doi":"10.1109/ICSPC.2007.4728484","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728484","url":null,"abstract":"This paper represents a new method for iris recognition using the dual tree complex wavelet transform. For the dual filter tree, we select two linear phase biorthogonal filter sets with odd and even lengths which is used to filter each signal for quantization to 136 byte iris feature codes. Then the Hamming distance is adopted to match two iris codes. In particular, the appropriate scale for each signal is searched for by minimizing the Hamming distance. The experimental results on CASIA database shows reliability and performance that the performance of this method is better than some algorithms, so it is promising to be used in a personal identification system.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"105 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127503067","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728458
M. Shibli, M. Sharawi
Characterization and modeling of a mechatronics human stress detection system is proposed. By modeling the compression forces acting on a cylindrical membrane from a human fingertip, a partial differential equation (PDE) is solved for the dynamic response identifying the motion eigenvalues. These values depend on the membrane dimensions, the area-density of the material and the compression force. The model can be applied to the human fingertip, thus obtaining the human stress eigenvalues. Such eigenvalues depend on the dimensions of the fingertip, the internal stress force (mechanical factor) and the area-density (thickness) of the skin (biological factor). Utilization of such a model can explain why a fat person is less stress than a slim one. Simulation results as well as an implementation model are presented.
{"title":"Modeling and Characterization of a Mechatronics System for Human Stress Detection","authors":"M. Shibli, M. Sharawi","doi":"10.1109/ICSPC.2007.4728458","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728458","url":null,"abstract":"Characterization and modeling of a mechatronics human stress detection system is proposed. By modeling the compression forces acting on a cylindrical membrane from a human fingertip, a partial differential equation (PDE) is solved for the dynamic response identifying the motion eigenvalues. These values depend on the membrane dimensions, the area-density of the material and the compression force. The model can be applied to the human fingertip, thus obtaining the human stress eigenvalues. Such eigenvalues depend on the dimensions of the fingertip, the internal stress force (mechanical factor) and the area-density (thickness) of the skin (biological factor). Utilization of such a model can explain why a fat person is less stress than a slim one. Simulation results as well as an implementation model are presented.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124787852","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728631
C. Guerrero-Mosquera, A. N. Vázquez, A. Trigueros
This paper presents a time-frequency approach as a nonlinear signal EEG processing technique. The proposed method is based on the use of the Smoothed Pseudo Wigner-Ville distribution (SPWV) good resolution combined with McAulay-Quatieri (MQ) sinusoidal model to identify a neural discharge. The initial results show the algorithm as a suitable method to develop an automatic detector based on graphics patterns parameterized by the features present in the neural discharges on the time-frequency plane. We obtained three features based on energy, frequency and tracking and the algorithm is tested in an application with epileptic EEGs. We can isolate a continuous energy trace with other oscillations when the epileptic seizure is beginning. This characteristic is always present in 16 different seizures from 6 epileptic patients.
{"title":"Identifying Neural Discharges using Time-Frequency Distributions for EEG","authors":"C. Guerrero-Mosquera, A. N. Vázquez, A. Trigueros","doi":"10.1109/ICSPC.2007.4728631","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728631","url":null,"abstract":"This paper presents a time-frequency approach as a nonlinear signal EEG processing technique. The proposed method is based on the use of the Smoothed Pseudo Wigner-Ville distribution (SPWV) good resolution combined with McAulay-Quatieri (MQ) sinusoidal model to identify a neural discharge. The initial results show the algorithm as a suitable method to develop an automatic detector based on graphics patterns parameterized by the features present in the neural discharges on the time-frequency plane. We obtained three features based on energy, frequency and tracking and the algorithm is tested in an application with epileptic EEGs. We can isolate a continuous energy trace with other oscillations when the epileptic seizure is beginning. This characteristic is always present in 16 different seizures from 6 epileptic patients.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124936803","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728575
A. El-Shafie, A. Noureldin, M. Bayoumi
Low cost navigation systems relying on gyroscopes and accelerometers manufactured using micro electro-mechanical system (MEMS) technology have been recently utilized in land vehicles. These MEMS-based sensors are integrated with GPS to provide reliable positioning solutions in case of GPS outages that commonly occur in urban areas. The major inadequacies of MEMS-based navigation sensors are the high noise level and the large bias instabilities that are stochastic in nature. The effects of these inadequacies manifest themselves as large position errors during GPS outages. This research proposes the utilization of wavelet denoising to improve the signal-to-noise ratio of each of the MEMS-based sensors. In addition a neuro-fuzzy module is used to provide a reliable prediction of the vehicle position during GPS outages. The results from a road test experiment show the effectiveness of the proposed wavelet - neuro-fuzzy module.
{"title":"An Augmented Wavelet - Neuro-Fuzzy Module for Enhancing MEMS based Navigation Systems","authors":"A. El-Shafie, A. Noureldin, M. Bayoumi","doi":"10.1109/ICSPC.2007.4728575","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728575","url":null,"abstract":"Low cost navigation systems relying on gyroscopes and accelerometers manufactured using micro electro-mechanical system (MEMS) technology have been recently utilized in land vehicles. These MEMS-based sensors are integrated with GPS to provide reliable positioning solutions in case of GPS outages that commonly occur in urban areas. The major inadequacies of MEMS-based navigation sensors are the high noise level and the large bias instabilities that are stochastic in nature. The effects of these inadequacies manifest themselves as large position errors during GPS outages. This research proposes the utilization of wavelet denoising to improve the signal-to-noise ratio of each of the MEMS-based sensors. In addition a neuro-fuzzy module is used to provide a reliable prediction of the vehicle position during GPS outages. The results from a road test experiment show the effectiveness of the proposed wavelet - neuro-fuzzy module.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123245395","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728247
Z. Bouida, Mohamed-Slim Alouini, K. Qaraqe
Many joint adaptive modulation and diversity combining (JAMDC) schemes have been recently proposed to improve the performance and efficiency of wireless communication systems. Considering the problem of finding low-complexity, bandwidth-efficient, and processing-power efficient transmission schemes for a downlink scenario and capitalizing on one of these recently proposed JAMDC schemes, we propose and analyze in this paper a JAMDC scheme using post combining power control and finger deactivation. More specifically, the modulation constellation size and the number of combined diversity paths are jointly determined to achieve the highest spectral efficiency with the lowest possible combining complexity, given the fading channel conditions and the required error rate performance. Selected numerical examples show that the newly proposed scheme considerably reduces the processing power consumption with a slight increase in the radiated power while maintaining high average spectral efficiency and compliance with bit error rate constraints.
{"title":"Improving the Processing Power Efficiency of Minimum Selection GSC with Adaptive Modulation and Post-Combining Power Control","authors":"Z. Bouida, Mohamed-Slim Alouini, K. Qaraqe","doi":"10.1109/ICSPC.2007.4728247","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728247","url":null,"abstract":"Many joint adaptive modulation and diversity combining (JAMDC) schemes have been recently proposed to improve the performance and efficiency of wireless communication systems. Considering the problem of finding low-complexity, bandwidth-efficient, and processing-power efficient transmission schemes for a downlink scenario and capitalizing on one of these recently proposed JAMDC schemes, we propose and analyze in this paper a JAMDC scheme using post combining power control and finger deactivation. More specifically, the modulation constellation size and the number of combined diversity paths are jointly determined to achieve the highest spectral efficiency with the lowest possible combining complexity, given the fading channel conditions and the required error rate performance. Selected numerical examples show that the newly proposed scheme considerably reduces the processing power consumption with a slight increase in the radiated power while maintaining high average spectral efficiency and compliance with bit error rate constraints.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123307063","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728284
O. Benrhouma, S. Houcke, A. Bouallègue
In this article, we introduce a blind MIMO communication scheme allowing the transmission over a frequency selective channel based on the turbo deflation described in [1]. Our proposed method is based on an iterative receiver. We incorporate an error correcting code in our method of source separation. Our new method consists simply in combining our initial method and a turbo decoder. We show that our procedure improves performances. Our scheme uses 2 transmit antennas and K (K ges 2) received antennas. This kind of blind system is well suited for underwater communications.
{"title":"Transmit Diversity over a Frequency Selective Fading Channel : Turbo Deflation and Turbo Decoding","authors":"O. Benrhouma, S. Houcke, A. Bouallègue","doi":"10.1109/ICSPC.2007.4728284","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728284","url":null,"abstract":"In this article, we introduce a blind MIMO communication scheme allowing the transmission over a frequency selective channel based on the turbo deflation described in [1]. Our proposed method is based on an iterative receiver. We incorporate an error correcting code in our method of source separation. Our new method consists simply in combining our initial method and a turbo decoder. We show that our procedure improves performances. Our scheme uses 2 transmit antennas and K (K ges 2) received antennas. This kind of blind system is well suited for underwater communications.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125462200","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}
Pub Date : 2007-11-01DOI: 10.1109/ICSPC.2007.4728557
M. S. Kemouche, N. Aouf, A. Tsourdos, B. White
In air surveillance systems, Kalman filter and its derives have been largely used for real-time multiple target tracking, where minimization of calculation burdens is greatly desired. While non-maneuvering targets can be accurately tracked by using a Kalman filter with a constant velocity model, a maneuvring target might be miss-tracked since prediction errors increase significantly. The H∞ filter is the robust filter, which does change its characteristics depending on the parameterγ. In order to track accurately not only non-maneuvering but also highly maneuvering target, we propose, in this paper, a variable γH∞, filter with an acceleration term when a maneuver is detected.
{"title":"A Hybrid Kalman/γH∞ Filter for Maneuvering Target Tracking","authors":"M. S. Kemouche, N. Aouf, A. Tsourdos, B. White","doi":"10.1109/ICSPC.2007.4728557","DOIUrl":"https://doi.org/10.1109/ICSPC.2007.4728557","url":null,"abstract":"In air surveillance systems, Kalman filter and its derives have been largely used for real-time multiple target tracking, where minimization of calculation burdens is greatly desired. While non-maneuvering targets can be accurately tracked by using a Kalman filter with a constant velocity model, a maneuvring target might be miss-tracked since prediction errors increase significantly. The H∞ filter is the robust filter, which does change its characteristics depending on the parameterγ. In order to track accurately not only non-maneuvering but also highly maneuvering target, we propose, in this paper, a variable γH∞, filter with an acceleration term when a maneuver is detected.","PeriodicalId":425397,"journal":{"name":"2007 IEEE International Conference on Signal Processing and Communications","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114896010","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}
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