... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies最新文献
An experimental system made of a large linear antenna array has been set up to obtain 2D images of the human chest with frame rate at microwave frequencies. Algorithms for reconstructing the images at close ranges and in a non homogeneous medium are described in this paper. Numerically calculated Green's functions are used to back propagate the observed signal to the image domain. Experimental results show that the image is better focused taking into account the inhomogeneous features of the propagation medium and that both breathing and heartbeat signals can be correctly extracted from the reconstructed images.
{"title":"Close range microwave imaging of human chest","authors":"Y. Paichard, T. Berger, Øyvind Aardal, S. Hamran","doi":"10.1145/2093698.2093818","DOIUrl":"https://doi.org/10.1145/2093698.2093818","url":null,"abstract":"An experimental system made of a large linear antenna array has been set up to obtain 2D images of the human chest with frame rate at microwave frequencies. Algorithms for reconstructing the images at close ranges and in a non homogeneous medium are described in this paper. Numerically calculated Green's functions are used to back propagate the observed signal to the image domain. Experimental results show that the image is better focused taking into account the inhomogeneous features of the propagation medium and that both breathing and heartbeat signals can be correctly extracted from the reconstructed images.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75263221","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}
Utilizing the randomness of the wireless channel for securing on-body communication in the presence of an on-body eavesdropper is considered. The feasibility of establishing a secure, unique and random key is investigated using a radio platform operating in the 2.4GHz ISM band. A low-complexity algorithm for establishing a symmetric encryption key tailored to the on-body propagation environment is proposed and justified. The algorithm uses the readily available radio signal strength indicator from existing packets going back and forth over the communication link and presents marginal system overheads. The secret bit sequences generated by the algorithm are evaluated for matching between the two communicating parties, mismatching with an eavesdropper placed on the body, and degree of randomness. It is shown that the algorithm generates long and highly random bit sequences which are perfectly matched between the legitimate communicating parties yet weakly matched with the eavesdropper's bit sequences.
{"title":"Reliable symmetric key generation for body area networks using wireless physical layer security in the presence of an on-body eavesdropper","authors":"G. Tsouri, Jeff Wilczewski","doi":"10.1145/2093698.2093851","DOIUrl":"https://doi.org/10.1145/2093698.2093851","url":null,"abstract":"Utilizing the randomness of the wireless channel for securing on-body communication in the presence of an on-body eavesdropper is considered. The feasibility of establishing a secure, unique and random key is investigated using a radio platform operating in the 2.4GHz ISM band. A low-complexity algorithm for establishing a symmetric encryption key tailored to the on-body propagation environment is proposed and justified. The algorithm uses the readily available radio signal strength indicator from existing packets going back and forth over the communication link and presents marginal system overheads. The secret bit sequences generated by the algorithm are evaluated for matching between the two communicating parties, mismatching with an eavesdropper placed on the body, and degree of randomness. It is shown that the algorithm generates long and highly random bit sequences which are perfectly matched between the legitimate communicating parties yet weakly matched with the eavesdropper's bit sequences.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80352241","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}
We report on a work in progress aiming at automatically analysing electrocardiograms with the help of wavelet bases. The objective we have fixed was to introduce a parsimonious and computationally efficient method --- that can be ultimately incorporated on standard ECG recording devices --- to automatically localise points of interest and decide whether they are normal or not and, for abnormal points, assign them a given class of abnormality. The task we have already achieved is the localisation and identification of normal QRS complexes. Identification and localisation of other features, like premature atrial or ventricular beats, fibrillation, noise, bundle branch block beats, ectopic beats, etc. is in progress but the so far obtained preliminary results are very encouraging.
{"title":"Automated localisation and classification of abnormal beats in electrocardiograms using parsimonious wavelet analysis","authors":"A. Ka, D. Petritis","doi":"10.1145/2093698.2093811","DOIUrl":"https://doi.org/10.1145/2093698.2093811","url":null,"abstract":"We report on a work in progress aiming at automatically analysing electrocardiograms with the help of wavelet bases. The objective we have fixed was to introduce a parsimonious and computationally efficient method --- that can be ultimately incorporated on standard ECG recording devices --- to automatically localise points of interest and decide whether they are normal or not and, for abnormal points, assign them a given class of abnormality. The task we have already achieved is the localisation and identification of normal QRS complexes. Identification and localisation of other features, like premature atrial or ventricular beats, fibrillation, noise, bundle branch block beats, ectopic beats, etc. is in progress but the so far obtained preliminary results are very encouraging.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72735896","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}
K. Oguchi, Yusuke Enomoto, Shuhei Terada, D. Hanawa
Societies are rapidly aging and need to create a new environment with help of smart information and communication technologies. Sensor or sensor network will be powerful tools to create such environment. This paper introduces some resent results of ongoing activities on sensor based e-healthcare related researches performed in the author's laboratory.
{"title":"Sensor-based e-healthcare in a next generation convergence home network","authors":"K. Oguchi, Yusuke Enomoto, Shuhei Terada, D. Hanawa","doi":"10.1145/2093698.2093858","DOIUrl":"https://doi.org/10.1145/2093698.2093858","url":null,"abstract":"Societies are rapidly aging and need to create a new environment with help of smart information and communication technologies. Sensor or sensor network will be powerful tools to create such environment. This paper introduces some resent results of ongoing activities on sensor based e-healthcare related researches performed in the author's laboratory.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72773695","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}
In this paper we introduce an ultrasound image segmentation evaluation framework for kidney tumor. Ultrasound image segmentation algorithms can be divided into edge based, region based, texture based, active contour and model base technique. We tested the performance of algorithms in each category using a kidney phantom and kidney cyst ultrasound image. We found that the algorithms we implemented are more suitable for relatively homogeneous kidney tumors. For more heterogeneous tumors we should use more complicated segmentation techniques and some of these advanced techniques are discussed in this paper.
{"title":"A comparative study of ultrasound image segmentation algorithms for segmenting kidney tumors","authors":"Lin Li, P. Ross, M. Kruusmaa, Xiaosong Zheng","doi":"10.1145/2093698.2093824","DOIUrl":"https://doi.org/10.1145/2093698.2093824","url":null,"abstract":"In this paper we introduce an ultrasound image segmentation evaluation framework for kidney tumor. Ultrasound image segmentation algorithms can be divided into edge based, region based, texture based, active contour and model base technique. We tested the performance of algorithms in each category using a kidney phantom and kidney cyst ultrasound image. We found that the algorithms we implemented are more suitable for relatively homogeneous kidney tumors. For more heterogeneous tumors we should use more complicated segmentation techniques and some of these advanced techniques are discussed in this paper.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74579099","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}
Green resource allocation for relay-assisted DS/CDMA interference channels is considered in this paper. A non-cooperative game-theoretic approach is taken, according to which each user is selfishly interested in maximizing his own energy efficiency, measured in bit/Joule and denoting the number of error-free delivered bits for each energy-unit used for transmission. Several non-cooperative games are proposed and theoretically analyzed, and simulation results are provided to confirm the theoretical findings and show that the use of advanced data detection strategies can bring huge performance gains to the energy efficiency of relay-assisted interference channels.
{"title":"Green power control and receiver design in relay-assisted interference channel wireless networks: a game-theoretic approach","authors":"A. Zappone, S. Buzzi, Eduard Axel Jorswieck","doi":"10.1145/2093698.2093777","DOIUrl":"https://doi.org/10.1145/2093698.2093777","url":null,"abstract":"Green resource allocation for relay-assisted DS/CDMA interference channels is considered in this paper. A non-cooperative game-theoretic approach is taken, according to which each user is selfishly interested in maximizing his own energy efficiency, measured in bit/Joule and denoting the number of error-free delivered bits for each energy-unit used for transmission. Several non-cooperative games are proposed and theoretically analyzed, and simulation results are provided to confirm the theoretical findings and show that the use of advanced data detection strategies can bring huge performance gains to the energy efficiency of relay-assisted interference channels.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85551701","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}
Estimated number of species is 7--100 million of prokaryotes and eukaryotes. Just a small fraction has been identified up to the present days. Morphological taxonomy is not able to process such huge diversity. Methods based on analysis of DNA sequences can be much more successful. DNA barcoding intends to identify animals by mitochondrial gene cytochrome c oxidase subunit 1. This paper presents results of our study of bird's cytochrome c oxidase subunit 1 nucleotide densities. We propose to identify and classify species on the basis of comparison of nucleotide densities.
{"title":"Motive representation in nucleotide densities of bird's mitochondrial gene COX1","authors":"D. Maderankova, I. Provazník","doi":"10.1145/2093698.2093739","DOIUrl":"https://doi.org/10.1145/2093698.2093739","url":null,"abstract":"Estimated number of species is 7--100 million of prokaryotes and eukaryotes. Just a small fraction has been identified up to the present days. Morphological taxonomy is not able to process such huge diversity. Methods based on analysis of DNA sequences can be much more successful. DNA barcoding intends to identify animals by mitochondrial gene cytochrome c oxidase subunit 1. This paper presents results of our study of bird's cytochrome c oxidase subunit 1 nucleotide densities. We propose to identify and classify species on the basis of comparison of nucleotide densities.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80601611","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}
Recently we investigated the potential improvements in key transmission rate in a Quantum Key Distribution (QKD) scheme whereby photon-counting detectors are used at the receiver. To take full advantage of such detectors, soft information is generated in the form of Log-Likelihood Ratios (LLRs) using a Bayesian estimator of phase of the signal pulse which is used to carry the information. We achieved significant reduction in the residual Bit Error Rate (BER) and Frame Error Rate (FER) using LDPC codes in the information reconciliation process. In this paper we explore the limits of the achievable performance gains when using photon counting detectors as compared to the case when such detectors are not available. To this end, we find the classical capacity of the Bayesian inference channel clearly showing the potential gains that photon counting detectors can provide in the context of a realistic cost-effective scheme from an implementation point of view. While there are binary communication schemes that can achieve a higher capacity for a given mean photon count at the receiver compared to the scheme presented here (e.g., the Dolinar receiver), most such schemes are complex and at times unrealistic from an implementation point of view.
{"title":"Classical capacity of a Bayesian inference quantum channel employing photon counting detectors","authors":"F. Daneshgaran, M. Delgado, M. Mondin, I. Bari","doi":"10.1145/2093698.2093859","DOIUrl":"https://doi.org/10.1145/2093698.2093859","url":null,"abstract":"Recently we investigated the potential improvements in key transmission rate in a Quantum Key Distribution (QKD) scheme whereby photon-counting detectors are used at the receiver. To take full advantage of such detectors, soft information is generated in the form of Log-Likelihood Ratios (LLRs) using a Bayesian estimator of phase of the signal pulse which is used to carry the information. We achieved significant reduction in the residual Bit Error Rate (BER) and Frame Error Rate (FER) using LDPC codes in the information reconciliation process. In this paper we explore the limits of the achievable performance gains when using photon counting detectors as compared to the case when such detectors are not available. To this end, we find the classical capacity of the Bayesian inference channel clearly showing the potential gains that photon counting detectors can provide in the context of a realistic cost-effective scheme from an implementation point of view. While there are binary communication schemes that can achieve a higher capacity for a given mean photon count at the receiver compared to the scheme presented here (e.g., the Dolinar receiver), most such schemes are complex and at times unrealistic from an implementation point of view.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80133157","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}
EEG biofeedback is an up to date therapeutic system able to cure low concentration ability, attention deficit hyperactivity disorder (ADHD), learning disability or depressions. Biofeedback systems based on EDG, ECG, EMG or EEG are used in numerous rehabilitation and therapeutic centers. Designed EEG biofeedback acquires EEG signal with a use of BIOPAC Acquisition unit. The signal is amplified, filtered and digitized. The software part of the system is designed in LabVIEW; it handles system control, data processing and data and feedback visualization. Two simple graphical games are included. The games are designed to increase the patient's efficiency of mind concentration or body and mind relaxation.
{"title":"EEG biofeedback","authors":"Vratislav Cmiel, Oto Janousek, Jana Kolarova","doi":"10.1145/2093698.2093752","DOIUrl":"https://doi.org/10.1145/2093698.2093752","url":null,"abstract":"EEG biofeedback is an up to date therapeutic system able to cure low concentration ability, attention deficit hyperactivity disorder (ADHD), learning disability or depressions. Biofeedback systems based on EDG, ECG, EMG or EEG are used in numerous rehabilitation and therapeutic centers. Designed EEG biofeedback acquires EEG signal with a use of BIOPAC Acquisition unit. The signal is amplified, filtered and digitized. The software part of the system is designed in LabVIEW; it handles system control, data processing and data and feedback visualization. Two simple graphical games are included. The games are designed to increase the patient's efficiency of mind concentration or body and mind relaxation.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78411441","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}
This paper focuses on design and performance of a multiple access protocol for an Ultra Wide Band (UWB) based Wireless Body Area Network (WBAN). The proposed WBAN consists of wearable sensor nodes which communicate with a coordinator node using a UWB transmitter and receive a feedback from the coordinator using a narrowband receiver. Advantages of using a narrowband signal instead of a UWB signal for the feedback path are discussed. The proposed MAC (Medium Access Control) protocol is based on IEEE 802.15.4/4a beacon enabled star topology. Performance is analyzed by varying the number of sensors. A comparison is given between suggested MAC protocol, which uses both slotted ALOHA and GTS, and a protocol totally based on slotted ALOHA.
{"title":"A multiple access protocol for UWB wireless body area networks (WBANs) with narrowband feedback path","authors":"K. Thotahewa, M. Yuce, J. Khan","doi":"10.1145/2093698.2093715","DOIUrl":"https://doi.org/10.1145/2093698.2093715","url":null,"abstract":"This paper focuses on design and performance of a multiple access protocol for an Ultra Wide Band (UWB) based Wireless Body Area Network (WBAN). The proposed WBAN consists of wearable sensor nodes which communicate with a coordinator node using a UWB transmitter and receive a feedback from the coordinator using a narrowband receiver. Advantages of using a narrowband signal instead of a UWB signal for the feedback path are discussed. The proposed MAC (Medium Access Control) protocol is based on IEEE 802.15.4/4a beacon enabled star topology. Performance is analyzed by varying the number of sensors. A comparison is given between suggested MAC protocol, which uses both slotted ALOHA and GTS, and a protocol totally based on slotted ALOHA.","PeriodicalId":91990,"journal":{"name":"... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2011-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91319152","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}
... International Symposium on Applied Sciences in Biomedical and Communication Technologies. International Symposium on Applied Sciences in Biomedical and Communication Technologies
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