Pub Date : 2005-05-22DOI: 10.1109/EIT.2005.1627052
H. Reza, D. Jurgens, J. White, J. Anderson, J. Peterson
This paper discusses a method and its supporting tool to select the software architecture for a family of software systems (commonly known as architectural styles) that meets the needs of the user. Our approach emphasizes the importance of basing architecture on non-functional requirements (NFRs). To this end, we have utilized a scenario-based approach that will determine NFRs of software architecture. NFRs are then mapped to optimal software architecture of a system by a set of table. Tables are applied to properly bridge the gap between NFRs and its corresponding software architecture
{"title":"An architectural design selection tool based on design tactics, scenarios and nonfunctional requirements","authors":"H. Reza, D. Jurgens, J. White, J. Anderson, J. Peterson","doi":"10.1109/EIT.2005.1627052","DOIUrl":"https://doi.org/10.1109/EIT.2005.1627052","url":null,"abstract":"This paper discusses a method and its supporting tool to select the software architecture for a family of software systems (commonly known as architectural styles) that meets the needs of the user. Our approach emphasizes the importance of basing architecture on non-functional requirements (NFRs). To this end, we have utilized a scenario-based approach that will determine NFRs of software architecture. NFRs are then mapped to optimal software architecture of a system by a set of table. Tables are applied to properly bridge the gap between NFRs and its corresponding software architecture","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131331811","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626977
Shu Wang, S.G. Kim, Li-Hsiang Sun, S.W. Hobin Kim Lee, S. Subramanya, K. Y. Kim, B. K. Yi
In this paper, we propose a semiblind multiuser detection framework for asynchronous CDMA. Compared with most existing semiblind/blind detectors, the proposed framework requires a minimum number of previously received signals, which is about the number of interfering signals, and no detection filter converging or sub-space separation procedure. The computational complexity and detection delay are therefore much lower. In this framework, a semiblind multiuser signal model is used instead of the widely-discussed conventional multiuser model or subspace-based parametric multiuser signal model. Following this framework, two optimal semiblind linear detectors are developed using the minimum variance unbiased estimation (MVU) and minimum mean squared error (MMSE) estimation criteria. Meanwhile, a multi-window scheme is proposed for simultaneously detecting several bits and a recursively adaptive procedure is developed for further lowering the complexity. After these, the asymptotic multiuser efficiency (AME) of the proposed framework, the comparison between the employed semiblind multiuser signal model and the conventional signal model, and several estimation bounds are discussed. Computer simulation results are presented to support the performance of the proposed semi-blind multiuser detection schemes
{"title":"Semi-blind adaptive multiuser detection for asynchronous CDMA","authors":"Shu Wang, S.G. Kim, Li-Hsiang Sun, S.W. Hobin Kim Lee, S. Subramanya, K. Y. Kim, B. K. Yi","doi":"10.1109/EIT.2005.1626977","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626977","url":null,"abstract":"In this paper, we propose a semiblind multiuser detection framework for asynchronous CDMA. Compared with most existing semiblind/blind detectors, the proposed framework requires a minimum number of previously received signals, which is about the number of interfering signals, and no detection filter converging or sub-space separation procedure. The computational complexity and detection delay are therefore much lower. In this framework, a semiblind multiuser signal model is used instead of the widely-discussed conventional multiuser model or subspace-based parametric multiuser signal model. Following this framework, two optimal semiblind linear detectors are developed using the minimum variance unbiased estimation (MVU) and minimum mean squared error (MMSE) estimation criteria. Meanwhile, a multi-window scheme is proposed for simultaneously detecting several bits and a recursively adaptive procedure is developed for further lowering the complexity. After these, the asymptotic multiuser efficiency (AME) of the proposed framework, the comparison between the employed semiblind multiuser signal model and the conventional signal model, and several estimation bounds are discussed. Computer simulation results are presented to support the performance of the proposed semi-blind multiuser detection schemes","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133069702","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 : 2005-05-22DOI: 10.1109/EIT.2005.1627032
S. Newbold, L. Agarwal
The energy management and control system (EMCS) used at the University of Nebraska-Lincoln (UNL) is unique in that system hardware and software has been developed primarily in-house. UNL has a successful track record with this approach stretching back more than twenty years. This paper presents an industry experience report describing the high-level design and development of the latest version of this EMCS. This system is now being deployed on campus. We discuss aspects of our EMCS that enhance usability, fault tolerance, and security. Our system is unique in that it was primarily developed using non-proprietary, open-source software building blocks and software construction tools. This approach provides a framework for potential collaboration with others who are interested in expanding this system beyond UNL
{"title":"Design and implementation of a non-proprietary campus energy management and control system (EMCS)","authors":"S. Newbold, L. Agarwal","doi":"10.1109/EIT.2005.1627032","DOIUrl":"https://doi.org/10.1109/EIT.2005.1627032","url":null,"abstract":"The energy management and control system (EMCS) used at the University of Nebraska-Lincoln (UNL) is unique in that system hardware and software has been developed primarily in-house. UNL has a successful track record with this approach stretching back more than twenty years. This paper presents an industry experience report describing the high-level design and development of the latest version of this EMCS. This system is now being deployed on campus. We discuss aspects of our EMCS that enhance usability, fault tolerance, and security. Our system is unique in that it was primarily developed using non-proprietary, open-source software building blocks and software construction tools. This approach provides a framework for potential collaboration with others who are interested in expanding this system beyond UNL","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115453708","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626956
Wei Li, S. Sadeghi
Photonics band gap properties will be changed dramatically if there is a defect at the center of the photonic crystal. We theoretically proposed a nanoscale structure, i.e., n-doped asymmetric quantum wells, coherently controlled by an infrared laser. Due to the quantum interference in the conduction intersubband transitions, the refractive index could be monitored at some specific wavelength. This structure is applied at the center of the photonic crystal or grating waveguide as a coherently controlled defect . We also investigated the reflection, transmission or delay time of this one-dimensional photonic band gap at various wavelengths while the defect is adjusted by an infrared laser beam. It is believed that the structure could be used in the devices for the optical pulse reshaping, dispersion control, and wavelength filter or used as a distributed Bragg grating reflector for the laser mode tuning. Therefore it might have great applications in the optic communication or information processing
{"title":"Photonic band gap with coherently controlled defeat induced by a nanoscale structure","authors":"Wei Li, S. Sadeghi","doi":"10.1109/EIT.2005.1626956","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626956","url":null,"abstract":"Photonics band gap properties will be changed dramatically if there is a defect at the center of the photonic crystal. We theoretically proposed a nanoscale structure, i.e., n-doped asymmetric quantum wells, coherently controlled by an infrared laser. Due to the quantum interference in the conduction intersubband transitions, the refractive index could be monitored at some specific wavelength. This structure is applied at the center of the photonic crystal or grating waveguide as a coherently controlled defect . We also investigated the reflection, transmission or delay time of this one-dimensional photonic band gap at various wavelengths while the defect is adjusted by an infrared laser beam. It is believed that the structure could be used in the devices for the optical pulse reshaping, dispersion control, and wavelength filter or used as a distributed Bragg grating reflector for the laser mode tuning. Therefore it might have great applications in the optic communication or information processing","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124417455","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626984
K. Veeraraghavan, H. Sharif, A. Nicoll, H. Ali
We have a wide variety of systems and configurations to choose for our computing needs; however, there is no knowledge base of which systems have better performance for a given business, scientific or an engineering application. In this paper, we benchmarked the performance of commonly available high-end systems using industry standard benchmark suites. Since most of the currently available benchmarks do not provide a complete evaluation of all system components, we chose to use different benchmarks to measure the performance of low-level, kernel and application specific areas. We have described the architecture and configuration of each system tested and also presented the benchmark results, which reveal the best suited platform for application requirements
{"title":"Quantitative performance evaluation of high-end computing platforms","authors":"K. Veeraraghavan, H. Sharif, A. Nicoll, H. Ali","doi":"10.1109/EIT.2005.1626984","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626984","url":null,"abstract":"We have a wide variety of systems and configurations to choose for our computing needs; however, there is no knowledge base of which systems have better performance for a given business, scientific or an engineering application. In this paper, we benchmarked the performance of commonly available high-end systems using industry standard benchmark suites. Since most of the currently available benchmarks do not provide a complete evaluation of all system components, we chose to use different benchmarks to measure the performance of low-level, kernel and application specific areas. We have described the architecture and configuration of each system tested and also presented the benchmark results, which reveal the best suited platform for application requirements","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122940608","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626968
K. Arunachalam, L. Udpa, S. Udpa
High energy X-ray imaging is a well established-screening modality for large and high density cargo containers and vehicles at airports, seaports and border crossings. High energy X-rays are used for noninvasive detection of contraband goods and for curtailing illegal activities at the borders. The increased threat of global terrorism has led to the need for a non-intrusive imaging system that can yield high resolution images with reduced false alarms. In conventional X-ray systems, the constricted source detector arrangement and large container size prohibits the reconstruction of 2D cross sections. In this paper, we present a novel X-ray reflective mirror assembly for a more comprehensive screening of cargo containers. The proposed technique utilizes a micro-machined membrane deformable X-ray reflective mirror for efficient projection measurements. The deformable mirror compensates for the limited movement of the scan arrangement and yields high resolution 2D reconstruction
{"title":"MEMS based computed tomographic scanner for border security","authors":"K. Arunachalam, L. Udpa, S. Udpa","doi":"10.1109/EIT.2005.1626968","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626968","url":null,"abstract":"High energy X-ray imaging is a well established-screening modality for large and high density cargo containers and vehicles at airports, seaports and border crossings. High energy X-rays are used for noninvasive detection of contraband goods and for curtailing illegal activities at the borders. The increased threat of global terrorism has led to the need for a non-intrusive imaging system that can yield high resolution images with reduced false alarms. In conventional X-ray systems, the constricted source detector arrangement and large container size prohibits the reconstruction of 2D cross sections. In this paper, we present a novel X-ray reflective mirror assembly for a more comprehensive screening of cargo containers. The proposed technique utilizes a micro-machined membrane deformable X-ray reflective mirror for efficient projection measurements. The deformable mirror compensates for the limited movement of the scan arrangement and yields high resolution 2D reconstruction","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128331924","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626997
A. George, S. Ganesan
Cluster technology provides fault tolerance and availability of computer systems running mission critical applications. The primary contribution of this paper is to analyze cluster architectures and examine some underlying implementations such as fault tolerant, hardware components, I/O facility, transport interfaces and the operating system in a traditional infrastructure. Network design is examined to fit the cluster availability in network failures due to router overload is also examined.
{"title":"Analysis of a Highly Available Cluster Architecture","authors":"A. George, S. Ganesan","doi":"10.1109/EIT.2005.1626997","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626997","url":null,"abstract":"Cluster technology provides fault tolerance and availability of computer systems running mission critical applications. The primary contribution of this paper is to analyze cluster architectures and examine some underlying implementations such as fault tolerant, hardware components, I/O facility, transport interfaces and the operating system in a traditional infrastructure. Network design is examined to fit the cluster availability in network failures due to router overload is also examined.","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126014109","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 : 2005-05-22DOI: 10.1109/EIT.2005.1627010
S. Das, C. Gleason, S. Shen, S. Goddard, L. C. Pérez
One of the most interesting applications of sensor networks is the localization and tracking of moving objects. The cricket location-support system (CLS), originally developed at MIT and now distributed by Crossbow Technologies, tracks a moving object using time-difference-of-arrival (TDOA) between radio frequency (RF) and ultrasonic signals. In this work we evaluate the ability of CLS to track people with various levels of mobility within a 2-dimensional space. The results presented here are preliminary results in a larger effort to determine whether or not CLS can be used to track people in a smart assistive technology living space
{"title":"2D tracking performance evaluation using the cricket location-support system","authors":"S. Das, C. Gleason, S. Shen, S. Goddard, L. C. Pérez","doi":"10.1109/EIT.2005.1627010","DOIUrl":"https://doi.org/10.1109/EIT.2005.1627010","url":null,"abstract":"One of the most interesting applications of sensor networks is the localization and tracking of moving objects. The cricket location-support system (CLS), originally developed at MIT and now distributed by Crossbow Technologies, tracks a moving object using time-difference-of-arrival (TDOA) between radio frequency (RF) and ultrasonic signals. In this work we evaluate the ability of CLS to track people with various levels of mobility within a 2-dimensional space. The results presented here are preliminary results in a larger effort to determine whether or not CLS can be used to track people in a smart assistive technology living space","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116823913","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 : 2005-05-22DOI: 10.1109/EIT.2005.1626982
P. Muller, U. Bapst, R. Luijten
We address a hierarchical synchronization distribution architecture for high-performance and low-latency operations. Furthermore, the bandwidth overhead is minimized, and the accuracy can be adjusted to the application. A novel signaling channel with an open, user-extendable protocol is proposed. An approximation method to estimate system-wide clock jitter is introduced and applied to the optical shared memory supercomputer interconnects system (OSMOSIS). First measurement results, which reveal the challenges of future system synchronization requirements and the potential of the defined architecture, are presented
{"title":"Hierarchical system synchronization and signaling for high-performance-low-latency interconnects","authors":"P. Muller, U. Bapst, R. Luijten","doi":"10.1109/EIT.2005.1626982","DOIUrl":"https://doi.org/10.1109/EIT.2005.1626982","url":null,"abstract":"We address a hierarchical synchronization distribution architecture for high-performance and low-latency operations. Furthermore, the bandwidth overhead is minimized, and the accuracy can be adjusted to the application. A novel signaling channel with an open, user-extendable protocol is proposed. An approximation method to estimate system-wide clock jitter is introduced and applied to the optical shared memory supercomputer interconnects system (OSMOSIS). First measurement results, which reveal the challenges of future system synchronization requirements and the potential of the defined architecture, are presented","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114907628","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 : 2005-05-22DOI: 10.1109/EIT.2005.1627014
A. Rashdi, N. Sheikh, A. Sheikh
In modern digital subscriber line (DSL) systems where multiple users coexist in the same frequency band, multiuser power control is an effective technique for reducing crosstalk interference and improving total system throughput. This paper considers the rate and power control problem in a frequency selective interference channel. The objective of the rate and power control is to maximize the achievable rate region, given an average power constraint for each user. We analyse the performance of both the distributed and centralized multiuser power control algorithms for very high bit rate digital subscriber lines (VDSL) and suggest a multiuser centralized power control algorithm which when applied to the VDSL upstream transmission enlarges the data rate region
{"title":"Performance analysis of multiuser power control algorithms for VDSL","authors":"A. Rashdi, N. Sheikh, A. Sheikh","doi":"10.1109/EIT.2005.1627014","DOIUrl":"https://doi.org/10.1109/EIT.2005.1627014","url":null,"abstract":"In modern digital subscriber line (DSL) systems where multiple users coexist in the same frequency band, multiuser power control is an effective technique for reducing crosstalk interference and improving total system throughput. This paper considers the rate and power control problem in a frequency selective interference channel. The objective of the rate and power control is to maximize the achievable rate region, given an average power constraint for each user. We analyse the performance of both the distributed and centralized multiuser power control algorithms for very high bit rate digital subscriber lines (VDSL) and suggest a multiuser centralized power control algorithm which when applied to the VDSL upstream transmission enlarges the data rate region","PeriodicalId":358002,"journal":{"name":"2005 IEEE International Conference on Electro Information Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124077706","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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