Pub Date : 2018-12-01DOI: 10.1109/ICCCAS.2018.8769246
Jingxian Tu, Guijiang Qin
A single channel subspace speech enhancement approach based on optimal Lagrange multiplier in time domain constraint is proposed. The proposed method focuses on the time domain constraint. The inverse of the Cholesky factorization matrix of noise covariance matrix is used to prewhiten the noisy signal. In this paper, the noise suppression level is adjusted adaptively and is decreasing monotonically according to a short time signal to noise (SNR), then the optimal Lagrange multiplier is obtained by a numerical algorithm with high speed. Simulation shows that the proposed approach outperform conventional subspace methods providing high noise reduction and better speech quality in most cases.
{"title":"A Single Channel Subspace Speech Enhancement Approach Based on Optimal Lagrange Multiplier in Time Domain Constraint","authors":"Jingxian Tu, Guijiang Qin","doi":"10.1109/ICCCAS.2018.8769246","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8769246","url":null,"abstract":"A single channel subspace speech enhancement approach based on optimal Lagrange multiplier in time domain constraint is proposed. The proposed method focuses on the time domain constraint. The inverse of the Cholesky factorization matrix of noise covariance matrix is used to prewhiten the noisy signal. In this paper, the noise suppression level is adjusted adaptively and is decreasing monotonically according to a short time signal to noise (SNR), then the optimal Lagrange multiplier is obtained by a numerical algorithm with high speed. Simulation shows that the proposed approach outperform conventional subspace methods providing high noise reduction and better speech quality in most cases.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134413870","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8768963
Z. Jing, Liang Ying
With an eye to solving the problems on lack of the sample and low accuracy in analog circuit fault diagnosis, one effective method based on the Sine Cosine Algorithm(SCA) is proposed for soft fault diagnosis in analog circuit with tolerance. Primarily, monte carlo analysis is performed on the experimental circuit and then the output voltage signal collected as dataset. Then the wavelet entropy is calculated from dataset transformed by the wavelet transform, which forms the fault feature dataset. The principal component analysis(PCA) is used for lowering the feature dimension. Finally, support vector machine(SVM) optimized by SCA is employed for classification of the fault dataset. Experiment on the Sallen-Key band-pass filter circuit analysis shows that the SCA-SVM classifier has higher classification accuracy and faster iteration speed than GridSearch, Genetic Algorithm and Particle Swarm Optimization. Verification experiment on the four-opamp biquad highpass filter circuit indicates excellent adaptive capacity in analog circuit fault diagnosis.
{"title":"Electronic Circuit Fault Diagnosis Based on SCA-SVM","authors":"Z. Jing, Liang Ying","doi":"10.1109/ICCCAS.2018.8768963","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8768963","url":null,"abstract":"With an eye to solving the problems on lack of the sample and low accuracy in analog circuit fault diagnosis, one effective method based on the Sine Cosine Algorithm(SCA) is proposed for soft fault diagnosis in analog circuit with tolerance. Primarily, monte carlo analysis is performed on the experimental circuit and then the output voltage signal collected as dataset. Then the wavelet entropy is calculated from dataset transformed by the wavelet transform, which forms the fault feature dataset. The principal component analysis(PCA) is used for lowering the feature dimension. Finally, support vector machine(SVM) optimized by SCA is employed for classification of the fault dataset. Experiment on the Sallen-Key band-pass filter circuit analysis shows that the SCA-SVM classifier has higher classification accuracy and faster iteration speed than GridSearch, Genetic Algorithm and Particle Swarm Optimization. Verification experiment on the four-opamp biquad highpass filter circuit indicates excellent adaptive capacity in analog circuit fault diagnosis.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133660190","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8769213
Zhang Xuan, Zhang Xiaojie, Wang Shuo, Z. Ye
As individual satellite is limited by the mass and power constraints, formation or clusters contributing to the improved spatial and temporal resolution could be very useful in missions for space data collection or observation. Formation requires accurate orbital control for the system, while a cluster of spacecraft only requires cooperative control avoiding collision. Inter-satellite communication becomes critical for missions involving multiple satellites. As a solution for the Low–Power, Wide-Area Networks (LPWAN), LoRa technology is available for long-range and low-power communication in Internet of Things (IoT) areas. The purpose of this study is to take advantage of the LoRa technology to support autonomous operations with minimal human intervention in a wireless sensor network (WSN) building by a cluster of satellites. The paper will give an attempt to transplant IoT technology to space. We will design a typical space scenario for WSN and analyze the communication and topology requirement for its space application. Specific modification will be taken for the implementation of terrestrial IoT technology LoRa in the space cluster.
{"title":"An attempt to utilize LoRa for Intersatellite Communications","authors":"Zhang Xuan, Zhang Xiaojie, Wang Shuo, Z. Ye","doi":"10.1109/ICCCAS.2018.8769213","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8769213","url":null,"abstract":"As individual satellite is limited by the mass and power constraints, formation or clusters contributing to the improved spatial and temporal resolution could be very useful in missions for space data collection or observation. Formation requires accurate orbital control for the system, while a cluster of spacecraft only requires cooperative control avoiding collision. Inter-satellite communication becomes critical for missions involving multiple satellites. As a solution for the Low–Power, Wide-Area Networks (LPWAN), LoRa technology is available for long-range and low-power communication in Internet of Things (IoT) areas. The purpose of this study is to take advantage of the LoRa technology to support autonomous operations with minimal human intervention in a wireless sensor network (WSN) building by a cluster of satellites. The paper will give an attempt to transplant IoT technology to space. We will design a typical space scenario for WSN and analyze the communication and topology requirement for its space application. Specific modification will be taken for the implementation of terrestrial IoT technology LoRa in the space cluster.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132594600","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 : 2018-12-01DOI: 10.1109/icccas.2018.8769179
{"title":"ICCCAS 2018 Author Index","authors":"","doi":"10.1109/icccas.2018.8769179","DOIUrl":"https://doi.org/10.1109/icccas.2018.8769179","url":null,"abstract":"","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"6 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120924654","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8768913
Fangning Wei, Shun-wai Zhang, T. Hong
We investigate an energy harvesting based multi-source repeat-accumulate (RA) coded cooperative system. In particular, the relay is equipped with multiple antennas for information transmitting and energy harvesting. Firstly, the water-filling algorithm is adopted at the relay to allocate the harvested energy to multiple antennas. Secondly, the system employs RA coded and network coding. The outage probability and bit error rate (BER) of the system are analyzed. Simulation results show that the outage probability of the system adopting the water-filling algorithm outperforms that of the system adopting the optimal antenna selection algorithm or the equal power allocation algorithm. Furthermore, results also demonstrate that the performance of investigated system outperforms the corresponding point-to-point system under the same condition.
{"title":"Performance Analysis of Energy Harvesting Based Multi-source RA-coded Cooperative System","authors":"Fangning Wei, Shun-wai Zhang, T. Hong","doi":"10.1109/ICCCAS.2018.8768913","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8768913","url":null,"abstract":"We investigate an energy harvesting based multi-source repeat-accumulate (RA) coded cooperative system. In particular, the relay is equipped with multiple antennas for information transmitting and energy harvesting. Firstly, the water-filling algorithm is adopted at the relay to allocate the harvested energy to multiple antennas. Secondly, the system employs RA coded and network coding. The outage probability and bit error rate (BER) of the system are analyzed. Simulation results show that the outage probability of the system adopting the water-filling algorithm outperforms that of the system adopting the optimal antenna selection algorithm or the equal power allocation algorithm. Furthermore, results also demonstrate that the performance of investigated system outperforms the corresponding point-to-point system under the same condition.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"127 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114645160","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8768930
Yiyu Gong, Songhai Fan, L. Luo, Xiaojiang Liu, Chongjing Ran
Sichuan power grid has a large number of transmission lines in the complex terrain, which’s communication is blocked. Inspection of transmission lines is often difficult and risky. Because the beidou satellite communication system is not affected by geographical environment and limit of communication network station, handheld mobile inspection terminal based on beidou communication implements real-time two-way short message communication, automatic navigation and positioning, SOS distress, and other functions in no man area. The terminal is helpful for the real-time intelligent recording circuit status in the transmission line patrol, guaranteeing the personal safety of the inspection personnel and improving the efficiency of the grid management system, which is of great application value.
{"title":"Research on Handheld Mobile Inspection Terminal Based on Beidou Communication","authors":"Yiyu Gong, Songhai Fan, L. Luo, Xiaojiang Liu, Chongjing Ran","doi":"10.1109/ICCCAS.2018.8768930","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8768930","url":null,"abstract":"Sichuan power grid has a large number of transmission lines in the complex terrain, which’s communication is blocked. Inspection of transmission lines is often difficult and risky. Because the beidou satellite communication system is not affected by geographical environment and limit of communication network station, handheld mobile inspection terminal based on beidou communication implements real-time two-way short message communication, automatic navigation and positioning, SOS distress, and other functions in no man area. The terminal is helpful for the real-time intelligent recording circuit status in the transmission line patrol, guaranteeing the personal safety of the inspection personnel and improving the efficiency of the grid management system, which is of great application value.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124680888","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8769225
Peng Zhaoqin, Cheng Xujie, Liu Yan, Han Peicen
Studying of aviation bus constitutes an important topic in the field of aeronautics. ARINC825 bus, as a widely-spread aviation bus, is capable of transmitting and sharing information in real time. Aiming at evaluating the working performance of ARINC825 bus, a testing system is designed and deployed. In this way, testing of data transmission, monitoring and analysis can be conducted. Further, the bus data status can be viewed simultaneously to facilitate the monitoring of aircraft avionics bus data and preventing fault from the on-board test systems. The experimental results show that the proposed testing system has good stability, high reliability and is convenient to use, which enables precise testing of the ARINC825 aviation bus.
{"title":"Development of Testing System for ARINC825 Bus","authors":"Peng Zhaoqin, Cheng Xujie, Liu Yan, Han Peicen","doi":"10.1109/ICCCAS.2018.8769225","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8769225","url":null,"abstract":"Studying of aviation bus constitutes an important topic in the field of aeronautics. ARINC825 bus, as a widely-spread aviation bus, is capable of transmitting and sharing information in real time. Aiming at evaluating the working performance of ARINC825 bus, a testing system is designed and deployed. In this way, testing of data transmission, monitoring and analysis can be conducted. Further, the bus data status can be viewed simultaneously to facilitate the monitoring of aircraft avionics bus data and preventing fault from the on-board test systems. The experimental results show that the proposed testing system has good stability, high reliability and is convenient to use, which enables precise testing of the ARINC825 aviation bus.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129732639","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 : 2018-12-01DOI: 10.1109/icccas.2018.8769314
{"title":"ICCCAS 2018 Copyright Page","authors":"","doi":"10.1109/icccas.2018.8769314","DOIUrl":"https://doi.org/10.1109/icccas.2018.8769314","url":null,"abstract":"","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129511587","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8768928
Li Wenbo, Fu Shanqiang, Li Huadong, Jiang Zhe, Chen Bo
At present, the static thermal rating (STR) used for overhead wires is calculated under the assumption that relatively unfavorable meteorological conditions occur simultaneously, which limits the efficient forthputting of transmission lines to a certain extent. Therefore, this paper proposes a calculation method to analyze the daily distribution of thermal rating driven by meteorological data to release the load capacity of the transmission line. Firstly, the distribution of thermal rating at daily time scales is calculated based on IEEE738, and then the distribution of ratings can be counted by Parzen-window technology. Then, the static thermal rating can be converted into the seasonal, monthly or daily values, as the time scale of the thermal rating is shortened. Finally, the operational risk assessment is evaluated combined with the actual operating parameters of the wire. The example shows that the proposed method can determine the appropriate thermal rating conveniently at daily time scale according to the allowable operational risk of the power system, as well improve the load capacity of overhead lines.
{"title":"Daily Thermal Rating Calculation of Overhead Conductor Driven by Meteorological Data","authors":"Li Wenbo, Fu Shanqiang, Li Huadong, Jiang Zhe, Chen Bo","doi":"10.1109/ICCCAS.2018.8768928","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8768928","url":null,"abstract":"At present, the static thermal rating (STR) used for overhead wires is calculated under the assumption that relatively unfavorable meteorological conditions occur simultaneously, which limits the efficient forthputting of transmission lines to a certain extent. Therefore, this paper proposes a calculation method to analyze the daily distribution of thermal rating driven by meteorological data to release the load capacity of the transmission line. Firstly, the distribution of thermal rating at daily time scales is calculated based on IEEE738, and then the distribution of ratings can be counted by Parzen-window technology. Then, the static thermal rating can be converted into the seasonal, monthly or daily values, as the time scale of the thermal rating is shortened. Finally, the operational risk assessment is evaluated combined with the actual operating parameters of the wire. The example shows that the proposed method can determine the appropriate thermal rating conveniently at daily time scale according to the allowable operational risk of the power system, as well improve the load capacity of overhead lines.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130833497","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 : 2018-12-01DOI: 10.1109/ICCCAS.2018.8769260
Yuanyuan Zhang, D. Geng, Xing Jiang, Zhigang Fu
In order to solve the problems of the complicated structure and the short life of quantitative systems for acupuncture manipulations, a new quantitative method based on electromagnetic induction was proposed in this paper. In this method, the exciting coil and the induction coil were sensing elements, and the time domain parameters of the induced voltage were quantitative indicators. It can perform the lifting-inserting deepness, the entwisting frequency and manipulation time accurately. The feasibility of this method was verified by simulation, and the quantitative system was designed. In this paper, the lifting-thrusting and entwisting manipulations were chosen to do controlled experiment between experts and novices. Statistical methods are used to analyze the voltage variance in time domain. The experimental results show that coefficients of dispersion of experts are lesser than those of novices and the time of voltage rise, voltage fall and total manipulation time are lower than those of novices. The research results show that this method can accurately quantize the acupuncture manipulations. It will provide a scientific and normative standard for the acupuncture manipulations.
{"title":"Study on the Quantitative System for Acupuncture Manipulations Based on Electromagnetic Induction","authors":"Yuanyuan Zhang, D. Geng, Xing Jiang, Zhigang Fu","doi":"10.1109/ICCCAS.2018.8769260","DOIUrl":"https://doi.org/10.1109/ICCCAS.2018.8769260","url":null,"abstract":"In order to solve the problems of the complicated structure and the short life of quantitative systems for acupuncture manipulations, a new quantitative method based on electromagnetic induction was proposed in this paper. In this method, the exciting coil and the induction coil were sensing elements, and the time domain parameters of the induced voltage were quantitative indicators. It can perform the lifting-inserting deepness, the entwisting frequency and manipulation time accurately. The feasibility of this method was verified by simulation, and the quantitative system was designed. In this paper, the lifting-thrusting and entwisting manipulations were chosen to do controlled experiment between experts and novices. Statistical methods are used to analyze the voltage variance in time domain. The experimental results show that coefficients of dispersion of experts are lesser than those of novices and the time of voltage rise, voltage fall and total manipulation time are lower than those of novices. The research results show that this method can accurately quantize the acupuncture manipulations. It will provide a scientific and normative standard for the acupuncture manipulations.","PeriodicalId":166878,"journal":{"name":"2018 10th International Conference on Communications, Circuits and Systems (ICCCAS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128798055","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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