Pub Date : 2013-03-23DOI: 10.1109/ICIST.2013.6747769
Wendong Yang, Yueming Cai, Guoqin Kang
In this paper, relay selection, subcarrier pairing and power allocation are investigated jointly to maximize the channel capacity for OFDM-based cooperative networks under a total power constraint. The problem can be formulated as a mixed binary integer programming problem, which is NP-hard and very difficult to manipulate. In order to achieve an acceptable performance with a proper complexity, we first solve the relay selection and subcarrier pairing problem under equal power allocation. Then, power allocation is performed according to the equivalent channel power gains of the subcarrier pairs using water-filling. Simulations are carried out to validate our analysis and show that the proposed scheme can achieve an acceptable capacity with a proper complexity.
{"title":"Joint relay selection, subcarrier pairing and power allocation for OFDM-based cooperative networks","authors":"Wendong Yang, Yueming Cai, Guoqin Kang","doi":"10.1109/ICIST.2013.6747769","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747769","url":null,"abstract":"In this paper, relay selection, subcarrier pairing and power allocation are investigated jointly to maximize the channel capacity for OFDM-based cooperative networks under a total power constraint. The problem can be formulated as a mixed binary integer programming problem, which is NP-hard and very difficult to manipulate. In order to achieve an acceptable performance with a proper complexity, we first solve the relay selection and subcarrier pairing problem under equal power allocation. Then, power allocation is performed according to the equivalent channel power gains of the subcarrier pairs using water-filling. Simulations are carried out to validate our analysis and show that the proposed scheme can achieve an acceptable capacity with a proper complexity.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115567235","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747645
Hao Liu, Zhaolin Li, Zhixiang Chen
Deep-micron semiconductor technology enables us to integrate more arithmetic and logic units in single modestly sized chip, so that many media processing and industrial control applications can utilize high performance, low power but not costly processors to meet more intensive computing or timing demands. Dynamic reconfigurable structure brings out a new design paradigm with a good balance between performance and flexibility, which can achieve hard-wired like performance and can be custom designed just by updating software. We propose a dynamic reconfigurable coprocessor for flexible precision matrix algorithms. It employs several dynamic reconfigurable multi-operation arithmetic units, aims at high-performance media processing and in industrial control applications. We analyze and implement four typical applications on the coprocessor, and contrast performances with implementations of ARM920EJ-S and TI TMS320C6713 DSP processor. Experimental result shows that the coprocessor has high speed-up factors with high-parallel algorithms.
{"title":"Design of a dynamic reconfigurable coprocessor for flexible precision matrix algorithms in media processing and industrial control applications","authors":"Hao Liu, Zhaolin Li, Zhixiang Chen","doi":"10.1109/ICIST.2013.6747645","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747645","url":null,"abstract":"Deep-micron semiconductor technology enables us to integrate more arithmetic and logic units in single modestly sized chip, so that many media processing and industrial control applications can utilize high performance, low power but not costly processors to meet more intensive computing or timing demands. Dynamic reconfigurable structure brings out a new design paradigm with a good balance between performance and flexibility, which can achieve hard-wired like performance and can be custom designed just by updating software. We propose a dynamic reconfigurable coprocessor for flexible precision matrix algorithms. It employs several dynamic reconfigurable multi-operation arithmetic units, aims at high-performance media processing and in industrial control applications. We analyze and implement four typical applications on the coprocessor, and contrast performances with implementations of ARM920EJ-S and TI TMS320C6713 DSP processor. Experimental result shows that the coprocessor has high speed-up factors with high-parallel algorithms.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114568269","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747601
Hongyong Wen, Yong Liu
Firstly one distributed warship control system has been introduced. Based the analysis with the frame and network of this control system, this paper designs the redundant hardware and software architecture, the work mode and the work process of the two core - Tkernel and System in central console based on QNX. This paper designs reply-driven message passing software architecture, the method of fault diagnosis and recovery with hardware and software techniques. It's an important reference in software design of warship control system.
{"title":"The fault-tolerant software design in warship control system","authors":"Hongyong Wen, Yong Liu","doi":"10.1109/ICIST.2013.6747601","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747601","url":null,"abstract":"Firstly one distributed warship control system has been introduced. Based the analysis with the frame and network of this control system, this paper designs the redundant hardware and software architecture, the work mode and the work process of the two core - Tkernel and System in central console based on QNX. This paper designs reply-driven message passing software architecture, the method of fault diagnosis and recovery with hardware and software techniques. It's an important reference in software design of warship control system.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114906429","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747715
L. Diakite, Yu Li
The subject of Wireless Sensor Network is the most useful in many applications. The latest researches are available for this area. Many innovations are explored in this paper. Monitoring and controlling of many physical states through the latest technology of Wireless Sensor Networks is an important topic to learn. Wireless Sensor Network provided many benefits to health care, industries and scientific areas. The paper focuses on the latest research about the Wireless Sensor Network (WSN), the technology has covered the vast area from different fields of life. Some useful applications of WSN are covered in the work. It covered mainly the water management in irrigated and non-irrigated areas in concern of the study.
{"title":"A Wireless Sensor Network for monitoring of physical conditions","authors":"L. Diakite, Yu Li","doi":"10.1109/ICIST.2013.6747715","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747715","url":null,"abstract":"The subject of Wireless Sensor Network is the most useful in many applications. The latest researches are available for this area. Many innovations are explored in this paper. Monitoring and controlling of many physical states through the latest technology of Wireless Sensor Networks is an important topic to learn. Wireless Sensor Network provided many benefits to health care, industries and scientific areas. The paper focuses on the latest research about the Wireless Sensor Network (WSN), the technology has covered the vast area from different fields of life. Some useful applications of WSN are covered in the work. It covered mainly the water management in irrigated and non-irrigated areas in concern of the study.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116413531","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747848
Hongzhi Wang, Yan Liu, Shupeng Xu
We put forward a new method for multi-focus image fusion based on the shearlet transform. It is combined with the multi-scale method for capturing the geometry features of the multidimensional data. Firstly, the shearlet transform is adopted to classify the original image in both the scales and directions to get the low and high frequency sub-band coefficients. Secondly, based on the coefficients, we analyze the relationship between the low frequency coefficients and the sharpness of the image, a weighted averaging scheme is presented. Finally, the high frequency coefficients are obtained by selecting the corresponding larger absolute value. Experimental results show that the proposed method is feasible with the better quality than the state-of-the-art one.
{"title":"An image fusion algorithm based on shearlet","authors":"Hongzhi Wang, Yan Liu, Shupeng Xu","doi":"10.1109/ICIST.2013.6747848","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747848","url":null,"abstract":"We put forward a new method for multi-focus image fusion based on the shearlet transform. It is combined with the multi-scale method for capturing the geometry features of the multidimensional data. Firstly, the shearlet transform is adopted to classify the original image in both the scales and directions to get the low and high frequency sub-band coefficients. Secondly, based on the coefficients, we analyze the relationship between the low frequency coefficients and the sharpness of the image, a weighted averaging scheme is presented. Finally, the high frequency coefficients are obtained by selecting the corresponding larger absolute value. Experimental results show that the proposed method is feasible with the better quality than the state-of-the-art one.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129856170","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747554
Hsin Guan, Luhao Li, Xin Jia
With the development of the intelligent vehicle navigation systems and vehicle networking systems, vehicle positioning and state estimation become very important. This paper investigates the integration of Global Positioning System (GPS), Inertial Navigation System (INS) and Dead Reckoning based on Anti-lock Braking System (ABSDR) positioning based on Kalman filter, and aims at achieving full-time vehicle positioning. In this paper, we use Kalman Filter to estimate INS positioning error based on GPS or ABSDR solution, take the INS solution compensated with estimated error as system output. This paper introduces INS positioning algorithm, dead reckoning method based on the ABS wheel speed and Kalman filtering method. After that, simulation analysis and experimental verification of the positioning algorithm are carried out. The results show that the system output high-precision high-frequency positioning information when GPS is available, and when GPS is unavailable, INS positioning errors can be compensated well with ABSDR introduced, achieving the full-time positioning of the vehicle.
{"title":"Multi-sensor fusion vehicle positioning based on Kalman Filter","authors":"Hsin Guan, Luhao Li, Xin Jia","doi":"10.1109/ICIST.2013.6747554","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747554","url":null,"abstract":"With the development of the intelligent vehicle navigation systems and vehicle networking systems, vehicle positioning and state estimation become very important. This paper investigates the integration of Global Positioning System (GPS), Inertial Navigation System (INS) and Dead Reckoning based on Anti-lock Braking System (ABSDR) positioning based on Kalman filter, and aims at achieving full-time vehicle positioning. In this paper, we use Kalman Filter to estimate INS positioning error based on GPS or ABSDR solution, take the INS solution compensated with estimated error as system output. This paper introduces INS positioning algorithm, dead reckoning method based on the ABS wheel speed and Kalman filtering method. After that, simulation analysis and experimental verification of the positioning algorithm are carried out. The results show that the system output high-precision high-frequency positioning information when GPS is available, and when GPS is unavailable, INS positioning errors can be compensated well with ABSDR introduced, achieving the full-time positioning of the vehicle.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128343464","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747667
Xiaoyan Lu
Aiming at the features of data cube, the paper firstly defines the query equivalent set concept and other concepts. The query algorithm of data cube is proposed in the paper connected with the cloud computing environment. According to the influences of all aspects during the algorithm procedures, the data distributed strategy of data cube in the cloud computing environment is also proposed in the paper. The theoretical analysis and experimental results show that the data cube query and distributed strategy which is applied in the cloud computing environment proposed in the paper can effectively optimize data distribution and data query efficiency.
{"title":"Query and data distribution strategy of data cube in cloud computation","authors":"Xiaoyan Lu","doi":"10.1109/ICIST.2013.6747667","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747667","url":null,"abstract":"Aiming at the features of data cube, the paper firstly defines the query equivalent set concept and other concepts. The query algorithm of data cube is proposed in the paper connected with the cloud computing environment. According to the influences of all aspects during the algorithm procedures, the data distributed strategy of data cube in the cloud computing environment is also proposed in the paper. The theoretical analysis and experimental results show that the data cube query and distributed strategy which is applied in the cloud computing environment proposed in the paper can effectively optimize data distribution and data query efficiency.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127193135","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747654
Yun Zi, Ping Xu
An RSA variant algorithmic approach for speeding up SSL's performance is presented on a web server. The RSA variant improves the performance of SSL's handshake protocol by up to a factor of 7.5 for 1024-bit RSA keys. We improve the server's performance by batching the SSL handshake protocol and shifting some decryption work to SSL clients. The theoretical value shows that the performance of the SSL handshake protocol has been substantially improved by the method.
{"title":"The research of improving SSL handshake performance","authors":"Yun Zi, Ping Xu","doi":"10.1109/ICIST.2013.6747654","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747654","url":null,"abstract":"An RSA variant algorithmic approach for speeding up SSL's performance is presented on a web server. The RSA variant improves the performance of SSL's handshake protocol by up to a factor of 7.5 for 1024-bit RSA keys. We improve the server's performance by batching the SSL handshake protocol and shifting some decryption work to SSL clients. The theoretical value shows that the performance of the SSL handshake protocol has been substantially improved by the method.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129023711","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747759
Xinyi Zhong, Youyun Xu, Kui Xu
In fading channels, the computation of Loglikelihood ratio (LLR) without channel state information (CSI) is complicated. The maximum capacity linear approximation (MCLA) has been proposed to reduce the computational complexity of LLR. However, the computation of LLR' probability density function (PDF) is still complicated due to numerical integrations. To overcome this shortage, we propose a simple Gaussian approximation to PDF of LLR. Using our proposed method, the computational complexity is significantly reduced and the BER performance is still very close to that of the MCLA in uncorrelated Rayleigh fading channels.
{"title":"Linear LLR approximation for LDPC decoding using a Gaussian approximation","authors":"Xinyi Zhong, Youyun Xu, Kui Xu","doi":"10.1109/ICIST.2013.6747759","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747759","url":null,"abstract":"In fading channels, the computation of Loglikelihood ratio (LLR) without channel state information (CSI) is complicated. The maximum capacity linear approximation (MCLA) has been proposed to reduce the computational complexity of LLR. However, the computation of LLR' probability density function (PDF) is still complicated due to numerical integrations. To overcome this shortage, we propose a simple Gaussian approximation to PDF of LLR. Using our proposed method, the computational complexity is significantly reduced and the BER performance is still very close to that of the MCLA in uncorrelated Rayleigh fading channels.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"15 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123693121","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 : 2013-03-23DOI: 10.1109/ICIST.2013.6747492
Ting Wang, Si Li, G. Chai, N. Lan
The future development of artificial limb is to provide sensory feedback for amputee users. Cutaneous electrical stimulation is a convenient and energy efficient way to produce substituted sensory information. In this paper, we present the results of psychophysical experiments of electrotactile stimulation in normal human subjects. The purposes of these experiments are: (1) to identify the suitable electrode position in upper limb, and (2) to investigate the perceptual levels of sensation with cutaneous electrical stimulation that could be detected in human. We recruited 18 healthy subjects, in all experiments. 16 of them participated in the first set of psychophysical experiments, and 6 of them participated in the second set of experiments. In the first set of experiments, four positions of reference electrode relative to the stimulation electrode in the upper arm were tested. The results showed that positions opposite or 10 cm apart from the stimulation electrode required lower stimulation currents that evoked the similar level of sensation. In the second set of experiments with the reference electrode placed opposite to the stimulation electrode, a fine gradation of sensation was obtained by modulating stimulation current amplitude, pulse width and frequency. The results indicated that 15 levels of sensation could be detected by health subjects. These results are valuable in guiding further experiments on amputees and for future development of intelligent artificial limb.
{"title":"Perceptual attributes of cutaneous electrical stimulation to provide sensory information for prosthetic limb","authors":"Ting Wang, Si Li, G. Chai, N. Lan","doi":"10.1109/ICIST.2013.6747492","DOIUrl":"https://doi.org/10.1109/ICIST.2013.6747492","url":null,"abstract":"The future development of artificial limb is to provide sensory feedback for amputee users. Cutaneous electrical stimulation is a convenient and energy efficient way to produce substituted sensory information. In this paper, we present the results of psychophysical experiments of electrotactile stimulation in normal human subjects. The purposes of these experiments are: (1) to identify the suitable electrode position in upper limb, and (2) to investigate the perceptual levels of sensation with cutaneous electrical stimulation that could be detected in human. We recruited 18 healthy subjects, in all experiments. 16 of them participated in the first set of psychophysical experiments, and 6 of them participated in the second set of experiments. In the first set of experiments, four positions of reference electrode relative to the stimulation electrode in the upper arm were tested. The results showed that positions opposite or 10 cm apart from the stimulation electrode required lower stimulation currents that evoked the similar level of sensation. In the second set of experiments with the reference electrode placed opposite to the stimulation electrode, a fine gradation of sensation was obtained by modulating stimulation current amplitude, pulse width and frequency. The results indicated that 15 levels of sensation could be detected by health subjects. These results are valuable in guiding further experiments on amputees and for future development of intelligent artificial limb.","PeriodicalId":415759,"journal":{"name":"2013 IEEE Third International Conference on Information Science and Technology (ICIST)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130671770","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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