Pub Date : 2008-12-01DOI: 10.1109/INMIC.2008.4777705
M. Yasir, G. Grillmayer, H. Roeser
This paper presents the development of the safe mode attitude controller for the micro-satellite Flying Laptop (FLP). The safe mode for the FLP is defined as the situation when the satellite is able to continue its normal operation with reduced functionality on the occurrence of serious anomaly in the software or the hardware of the satellite, which cannot be automatically processed and corrected on board. This mode is used to ensure the satellite's vital functions (e.g. on board power) while in the meantime, the failure is being analyzed on ground. In safe mode, the satellite is controlled through autonomous software dedicated for such a condition. The sensors used for this mode should reflect high reliability and the sensor outputs need to be available all the time, however only a coarse pointing knowledge is required during this mode.
{"title":"Development of a safe mode attitude control for a FPGA based micro satellite","authors":"M. Yasir, G. Grillmayer, H. Roeser","doi":"10.1109/INMIC.2008.4777705","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777705","url":null,"abstract":"This paper presents the development of the safe mode attitude controller for the micro-satellite Flying Laptop (FLP). The safe mode for the FLP is defined as the situation when the satellite is able to continue its normal operation with reduced functionality on the occurrence of serious anomaly in the software or the hardware of the satellite, which cannot be automatically processed and corrected on board. This mode is used to ensure the satellite's vital functions (e.g. on board power) while in the meantime, the failure is being analyzed on ground. In safe mode, the satellite is controlled through autonomous software dedicated for such a condition. The sensors used for this mode should reflect high reliability and the sensor outputs need to be available all the time, however only a coarse pointing knowledge is required during this mode.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"319 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116231610","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777710
F. Kharbash, G. Chaudhry
Recently, there has been an increasing interest in hardware support for decimal arithmetic driven by the growing demands from financial and commercial applications. A crucial building block for decimal operations is the decimal adder. Thus, it is important to explore its design in future nanotechnologies. This work presents the first decimal adder design in quantum-dot cellular automata (QCA) nanotechnology using majority voting gates. The proposed one-digit QCA decimal full adder structure in this paper requires 27 majority voting gates and 16 inverters.
{"title":"The design of Quantum-dot CellularAutomata decimal adder","authors":"F. Kharbash, G. Chaudhry","doi":"10.1109/INMIC.2008.4777710","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777710","url":null,"abstract":"Recently, there has been an increasing interest in hardware support for decimal arithmetic driven by the growing demands from financial and commercial applications. A crucial building block for decimal operations is the decimal adder. Thus, it is important to explore its design in future nanotechnologies. This work presents the first decimal adder design in quantum-dot cellular automata (QCA) nanotechnology using majority voting gates. The proposed one-digit QCA decimal full adder structure in this paper requires 27 majority voting gates and 16 inverters.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115004388","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777708
M. Nauman, T. Ali
Usage control is the field of security which deals with the issue of access decisions on a client platform which is outside the domain of the original owner. These issues include digital rights management, privacy issues and concepts such as content redistribution. UCON is a highly expressive usage control model, which significantly enhances traditional access control models through decision continuity and attribute mutability. Because of these enhancements, UCON is extremely difficult to implement in existing software paradigms. In this paper, we present the novel concept of a hardware-based UCON engine (HUE) which uses a single co-processor to facilitate the realization of UCON. We present an architectural model of the engine and define software requirements to effectively utilize this hardware in existing scenarios. We specify the requirements for such hardware and software and the facilities provided by our architecture. We also present detailed future directions in this area of research.
{"title":"HUE: A hardware UCON engine for fine-grained continuous usage control","authors":"M. Nauman, T. Ali","doi":"10.1109/INMIC.2008.4777708","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777708","url":null,"abstract":"Usage control is the field of security which deals with the issue of access decisions on a client platform which is outside the domain of the original owner. These issues include digital rights management, privacy issues and concepts such as content redistribution. UCON is a highly expressive usage control model, which significantly enhances traditional access control models through decision continuity and attribute mutability. Because of these enhancements, UCON is extremely difficult to implement in existing software paradigms. In this paper, we present the novel concept of a hardware-based UCON engine (HUE) which uses a single co-processor to facilitate the realization of UCON. We present an architectural model of the engine and define software requirements to effectively utilize this hardware in existing scenarios. We specify the requirements for such hardware and software and the facilities provided by our architecture. We also present detailed future directions in this area of research.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121571929","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777798
M. Shahzad
A fundamental design issue for wireless sensor network (WSN) protocols, applications and services is to introduce energy-efficiency to extend network lifetime. In this paper, we mathematically model and optimize our proposed energy-efficient time synchronization protocol (ETSP [21]) that provides significant energy improvements over compared time-synchronization protocols, namely reference broadcast synchronization (RBS [15]) and time-sync protocol for sensor networks (TPSN [16]). ETSP switches between RBS and TPSN based on the network density and improve over RBS and TPSN respectively. In the proposed protocol, we identify the conditions to switch between RBS and TPSN based on a threshold value of the number of neighbors at given node. We experimentally and mathematically derive an optimal value of the switching threshold for sensor motes hardware. It is shown that our proposed protocol results in reduced number of transmissions (message exchange) and is therefore, energy-efficient as compared to its existing counterparts. Moreover, we assess the performance of our protocol on the bit error traces collected over a WSN testbed to verify the analytical results.
{"title":"Modeling optimum ETSP protocol for WSN","authors":"M. Shahzad","doi":"10.1109/INMIC.2008.4777798","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777798","url":null,"abstract":"A fundamental design issue for wireless sensor network (WSN) protocols, applications and services is to introduce energy-efficiency to extend network lifetime. In this paper, we mathematically model and optimize our proposed energy-efficient time synchronization protocol (ETSP [21]) that provides significant energy improvements over compared time-synchronization protocols, namely reference broadcast synchronization (RBS [15]) and time-sync protocol for sensor networks (TPSN [16]). ETSP switches between RBS and TPSN based on the network density and improve over RBS and TPSN respectively. In the proposed protocol, we identify the conditions to switch between RBS and TPSN based on a threshold value of the number of neighbors at given node. We experimentally and mathematically derive an optimal value of the switching threshold for sensor motes hardware. It is shown that our proposed protocol results in reduced number of transmissions (message exchange) and is therefore, energy-efficient as compared to its existing counterparts. Moreover, we assess the performance of our protocol on the bit error traces collected over a WSN testbed to verify the analytical results.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129344213","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777795
Arjumand Yaqoob, J. Chong
In this paper we present a technique to estimate the time delay of IEEE 802.15.4a chirp spread spectrum (CSS). Conventionally, the time delay can be estimated by the phase estimation of the samples of a dechirped sinusoid. We estimate the phase differences not between samples in a sub-chirp but between samples of adjacent sub-chirps to magnify the phase differences making this technique more robust even in low SNR. We used joint ESPRIT technique in order to retain the phase information of each dechirped sinusoids in low and high bands. We have verified this technique through simulation and implementation.
{"title":"Joint ESPIRIT for time delay estimation of chirp spread spectrum","authors":"Arjumand Yaqoob, J. Chong","doi":"10.1109/INMIC.2008.4777795","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777795","url":null,"abstract":"In this paper we present a technique to estimate the time delay of IEEE 802.15.4a chirp spread spectrum (CSS). Conventionally, the time delay can be estimated by the phase estimation of the samples of a dechirped sinusoid. We estimate the phase differences not between samples in a sub-chirp but between samples of adjacent sub-chirps to magnify the phase differences making this technique more robust even in low SNR. We used joint ESPRIT technique in order to retain the phase information of each dechirped sinusoids in low and high bands. We have verified this technique through simulation and implementation.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121519418","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777732
N. Zivic, O. Rehman
In this paper the method of Joint Channel Coding and Cryptography has been analyzed and simulated. Joint Channel Coding and Cryptography is an extension of Soft Input Decryption with feedback, which is used for improvement of channel decoding of secured messages. Results of simulations of Joint Channel Coding and Cryptography are compared to results of convolutional coding with the same coding rate. In this way, Joint Channel Coding and Cryptography brings coding gain of 0.72 dB, fulfilling security requirements at the same time.
{"title":"Cryptographic check values as Channel Coding redundancy","authors":"N. Zivic, O. Rehman","doi":"10.1109/INMIC.2008.4777732","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777732","url":null,"abstract":"In this paper the method of Joint Channel Coding and Cryptography has been analyzed and simulated. Joint Channel Coding and Cryptography is an extension of Soft Input Decryption with feedback, which is used for improvement of channel decoding of secured messages. Results of simulations of Joint Channel Coding and Cryptography are compared to results of convolutional coding with the same coding rate. In this way, Joint Channel Coding and Cryptography brings coding gain of 0.72 dB, fulfilling security requirements at the same time.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132541453","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777808
H. Aftab, A. Bin Mansoor, M. Asim
Interpolation is a technique for obtaining new unknown data points within the range of discrete known data points. In this paper we propose a new single image interpolation technique for Super resolution and demonstrate its effectiveness for aerial images. The proposed approach is a fast hybrid method of switching between covariance based interpolation technique and curvature based interpolation technique. The two interpolation techniques are applied on the basis of edges and smooth areas. The proposed algorithm has shown encouraging results in terms of visual quality and processing time.
{"title":"A new single image interpolation technique for super resolution","authors":"H. Aftab, A. Bin Mansoor, M. Asim","doi":"10.1109/INMIC.2008.4777808","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777808","url":null,"abstract":"Interpolation is a technique for obtaining new unknown data points within the range of discrete known data points. In this paper we propose a new single image interpolation technique for Super resolution and demonstrate its effectiveness for aerial images. The proposed approach is a fast hybrid method of switching between covariance based interpolation technique and curvature based interpolation technique. The two interpolation techniques are applied on the basis of edges and smooth areas. The proposed algorithm has shown encouraging results in terms of visual quality and processing time.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"2022 31","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413102","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777778
S. M. Monir, M. Siyal, H.K. Maheshweri
We present a novel method for random noise-suppression in functional magnetic resonance imaging (fMRI) time-series based on modified spectral subtraction. The method estimates the signal and noise models at every voxel in the functional data from a small neighborhood, without prior knowledge of the signal characteristics. Spectral subtraction is then performed to obtain a noise-suppressed power spectrum of the voxel under consideration. We demonstrate the performance of the proposed method by preprocessing synthetic as well as real fMRI data. The method is found to efficiently reduce random noise while preserving the deterministic components of the signal, thus, enhancing the sensitivity of the fMRI analysis.
{"title":"Random noise suppression in fMRI time-series using modified spectral subtraction","authors":"S. M. Monir, M. Siyal, H.K. Maheshweri","doi":"10.1109/INMIC.2008.4777778","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777778","url":null,"abstract":"We present a novel method for random noise-suppression in functional magnetic resonance imaging (fMRI) time-series based on modified spectral subtraction. The method estimates the signal and noise models at every voxel in the functional data from a small neighborhood, without prior knowledge of the signal characteristics. Spectral subtraction is then performed to obtain a noise-suppressed power spectrum of the voxel under consideration. We demonstrate the performance of the proposed method by preprocessing synthetic as well as real fMRI data. The method is found to efficiently reduce random noise while preserving the deterministic components of the signal, thus, enhancing the sensitivity of the fMRI analysis.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133925734","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777727
Muhammad Younus, Muhammad Habib Khan, Yao-Tien Chen
This paper offers a simple and lossless compression method for compression of medical images. Method is based on wavelet decomposition of the medical images followed by the correlation analysis of coefficients. The correlation analyses are the basis of prediction equation for each sub band. Predictor variable selection is performed through coefficient graphic method to avoid multicollinearity problem and to achieve high prediction accuracy and compression rate. The method is applied on MRI and CT images. Results show that the proposed approach gives a high compression rate for MRI and CT images comparing with state of the art methods.
{"title":"Wavelet based medical image compression through prediction","authors":"Muhammad Younus, Muhammad Habib Khan, Yao-Tien Chen","doi":"10.1109/INMIC.2008.4777727","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777727","url":null,"abstract":"This paper offers a simple and lossless compression method for compression of medical images. Method is based on wavelet decomposition of the medical images followed by the correlation analysis of coefficients. The correlation analyses are the basis of prediction equation for each sub band. Predictor variable selection is performed through coefficient graphic method to avoid multicollinearity problem and to achieve high prediction accuracy and compression rate. The method is applied on MRI and CT images. Results show that the proposed approach gives a high compression rate for MRI and CT images comparing with state of the art methods.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123989809","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 : 2008-12-01DOI: 10.1109/INMIC.2008.4777760
M. Kunz, A. Farooq, S. Mencke, R. Dumke
The importance of providing integration architectures in every field of application is beyond controversy these days. Unfortunately existing solutions are focusing mainly on functionality. But for the success of systems integration in the long run, the quality of developed architectures is of substantial interest. Therefore a framework for quality-driven creation of architectures is proposed in this paper. Besides these quality-oriented characteristic, the usage of semantic knowledge and structured process descriptions enable an automatic procedure. Especially the combination of both is a promising approach.
{"title":"QuaD2 - an ontology-based framework for quality driven design of architectures","authors":"M. Kunz, A. Farooq, S. Mencke, R. Dumke","doi":"10.1109/INMIC.2008.4777760","DOIUrl":"https://doi.org/10.1109/INMIC.2008.4777760","url":null,"abstract":"The importance of providing integration architectures in every field of application is beyond controversy these days. Unfortunately existing solutions are focusing mainly on functionality. But for the success of systems integration in the long run, the quality of developed architectures is of substantial interest. Therefore a framework for quality-driven creation of architectures is proposed in this paper. Besides these quality-oriented characteristic, the usage of semantic knowledge and structured process descriptions enable an automatic procedure. Especially the combination of both is a promising approach.","PeriodicalId":112530,"journal":{"name":"2008 IEEE International Multitopic Conference","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117247202","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}