Pub Date : 2014-04-26DOI: 10.1109/ICIST.2014.6920595
Yiding Hu, Weixin Ren
A method based on Hilbert Transform is presented to separate components or to extract the envelope from the non-stationary amplitude modulated signals in the product model where the non-stationary signal is the product of the non-stationary slowly-varying component and stationary fast component. Numerical examples are given to illustrate the efficiency of the presented method. It is demonstrated that the stationary part can be successfully separated from the non-stationary amplitude modulated signals in the product model.
{"title":"Separating the components of amplitude modulated non-stationary signal based on Hilbert transform","authors":"Yiding Hu, Weixin Ren","doi":"10.1109/ICIST.2014.6920595","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920595","url":null,"abstract":"A method based on Hilbert Transform is presented to separate components or to extract the envelope from the non-stationary amplitude modulated signals in the product model where the non-stationary signal is the product of the non-stationary slowly-varying component and stationary fast component. Numerical examples are given to illustrate the efficiency of the presented method. It is demonstrated that the stationary part can be successfully separated from the non-stationary amplitude modulated signals in the product model.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123551734","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920378
D. Hu, Jiajun Wang, Erxi Fang, W. Zhou, Yue Zhou
Full-scanned photoacoustic data of the sample are needed to achieve better quality of the reconstructed photoacoustic image with filtered back projection algorithm. However, such a requirement is usually difficult to be satisfied due to the restrictions of the hardware conditions and spatial size. To tackle such a problem, a compressed sensing based method was proposed to recover the full-scanned photoacoustic data from the incomplete measurements. The results from the numerical simulation demonstrates that both the mean squared error and the peak signal-to-noise ratio(PSNR) of the image can significantly improved with our proposed method.
{"title":"The application of compressed sensing method in photoacoustic image reconstruction","authors":"D. Hu, Jiajun Wang, Erxi Fang, W. Zhou, Yue Zhou","doi":"10.1109/ICIST.2014.6920378","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920378","url":null,"abstract":"Full-scanned photoacoustic data of the sample are needed to achieve better quality of the reconstructed photoacoustic image with filtered back projection algorithm. However, such a requirement is usually difficult to be satisfied due to the restrictions of the hardware conditions and spatial size. To tackle such a problem, a compressed sensing based method was proposed to recover the full-scanned photoacoustic data from the incomplete measurements. The results from the numerical simulation demonstrates that both the mean squared error and the peak signal-to-noise ratio(PSNR) of the image can significantly improved with our proposed method.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117233964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this paper, we present a hardware design which can support the inverse transform size from 32×32 in high efficiency video coding (HEVC) and is implemented by a using single 1-D IDCT core with a memory to low cost architecture. The proposed 1-D IDCT core employs two calculating paths to achieve a high throughput rate and is implemented by a 1-D inverse transform which can calculate 1st-D and 2nd-Ddata simultaneously in two parallel paths. The proposed 2-D transform core can implement a throughput rate of 332-Mpels/s with 129k gate area.
{"title":"Low-cost video transform for HEVC","authors":"Chieh-Yang Liu, Wen-Quan He, Yung-Ming Chang, Yuan-Ho Chen","doi":"10.1109/ICIST.2014.6920370","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920370","url":null,"abstract":"In this paper, we present a hardware design which can support the inverse transform size from 32×32 in high efficiency video coding (HEVC) and is implemented by a using single 1-D IDCT core with a memory to low cost architecture. The proposed 1-D IDCT core employs two calculating paths to achieve a high throughput rate and is implemented by a 1-D inverse transform which can calculate 1st-D and 2nd-Ddata simultaneously in two parallel paths. The proposed 2-D transform core can implement a throughput rate of 332-Mpels/s with 129k gate area.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124642197","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920543
Jing Gao, Jinkuan Wang, Bin Wang
One of the key technologies of orthogonal frequency division multiplexing (OFDM) systems is its large peak to average power ratio (PAPR) of the channel signals. Partial transmit sequences (PTS) is a kind of promising method that improves PAPR performance effectively with not distortion processing, the complexity of PTS algorithm increases quickly with the divided number of signal blocks. Therefore, a novel sub-optimal algorithm is proposed to reduce computational complexity in this paper, which use the bacterial foraging optimization to realize the search process of optimal phase factors. Simulation results demonstrate that the proposed method can obtain better balance between PAPR performance and computational complexity.
{"title":"Power control with suboptimal algorithm for wireless communication systems","authors":"Jing Gao, Jinkuan Wang, Bin Wang","doi":"10.1109/ICIST.2014.6920543","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920543","url":null,"abstract":"One of the key technologies of orthogonal frequency division multiplexing (OFDM) systems is its large peak to average power ratio (PAPR) of the channel signals. Partial transmit sequences (PTS) is a kind of promising method that improves PAPR performance effectively with not distortion processing, the complexity of PTS algorithm increases quickly with the divided number of signal blocks. Therefore, a novel sub-optimal algorithm is proposed to reduce computational complexity in this paper, which use the bacterial foraging optimization to realize the search process of optimal phase factors. Simulation results demonstrate that the proposed method can obtain better balance between PAPR performance and computational complexity.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129412374","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920531
Huang Ji-jiang, Cao Jian-zhong, Yi Bo, Liu Chen
Discrete wavelet transform (DWT) is being broadly used in processing digital image, but the large requirement of memory and the time delay limit the DWT usage. For instance, when the image is processed in the space, the realtime processing, low power consumption, reduced complexity and low memory consumption are required. Lifting-based DWT is implemented to lessen complexity. And then the coefficients of the lifting filters are turned to be binary and the filters are therefore implemented efficiently without using any multiplier. In this way the frequency of DWT can be improved and the architecture is simplified. When 2-dimensional DWT is carried out, the line-based wavelet transform is able to save memory in a larger sense. The architecture of line-based wavelet can also be executed in a parallel way. Both horizontal transform and vertical transform can be executed at the same time. This paper takes 9/7 wavelet as an example and compares with others its architecture and performance. The advantages of this design include real-time performance improvement, memory reduction and architecture simplification.
{"title":"Low-memory-usage and high-speed image wavelet transform","authors":"Huang Ji-jiang, Cao Jian-zhong, Yi Bo, Liu Chen","doi":"10.1109/ICIST.2014.6920531","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920531","url":null,"abstract":"Discrete wavelet transform (DWT) is being broadly used in processing digital image, but the large requirement of memory and the time delay limit the DWT usage. For instance, when the image is processed in the space, the realtime processing, low power consumption, reduced complexity and low memory consumption are required. Lifting-based DWT is implemented to lessen complexity. And then the coefficients of the lifting filters are turned to be binary and the filters are therefore implemented efficiently without using any multiplier. In this way the frequency of DWT can be improved and the architecture is simplified. When 2-dimensional DWT is carried out, the line-based wavelet transform is able to save memory in a larger sense. The architecture of line-based wavelet can also be executed in a parallel way. Both horizontal transform and vertical transform can be executed at the same time. This paper takes 9/7 wavelet as an example and compares with others its architecture and performance. The advantages of this design include real-time performance improvement, memory reduction and architecture simplification.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130156130","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920328
Qingwei Li, Hongjun Duan
A model for Chinese medicine sugar precipitation is designed, without considering crystal size distribution. Adaptive robust control algorithm is presented for the uncertain nonlinear system based on Lyapunov's stability theory. The kernel idea is model decomposition: adaptive control algorithm is designed for attenuating the parameter uncertainties; robust control algorithm is designed for eliminating the disturbance and unknown dynamics; feedback control algorithm is designed for dominating the nominal plant. The stability is proven and the output of system tracks the set point very well. The algorithm is applied to the sugar precipitation control of Chinese medicine solution. Simulation result upheld the significance of the proposed algorithm.
{"title":"Sugar precipitation control of Chinese medicine solution based on adaptive robust","authors":"Qingwei Li, Hongjun Duan","doi":"10.1109/ICIST.2014.6920328","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920328","url":null,"abstract":"A model for Chinese medicine sugar precipitation is designed, without considering crystal size distribution. Adaptive robust control algorithm is presented for the uncertain nonlinear system based on Lyapunov's stability theory. The kernel idea is model decomposition: adaptive control algorithm is designed for attenuating the parameter uncertainties; robust control algorithm is designed for eliminating the disturbance and unknown dynamics; feedback control algorithm is designed for dominating the nominal plant. The stability is proven and the output of system tracks the set point very well. The algorithm is applied to the sugar precipitation control of Chinese medicine solution. Simulation result upheld the significance of the proposed algorithm.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128950905","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920523
Ji-lin Fang, Fen Xu, G. Cao, Su-Dan Huang
To solve the problem of complex designing and time consuming for the design process of the PSRM, dynamic model of the PSRM is built and co-simulation of the PSRM is performed based on Ansoft/Maxwell and Ansoft/Simplorer in this paper. Taking a new type of PSRM as the research object, the configuration, principle, and mathematical model of the PSRM are clarified. With the Maxwell, the initial value of the PSRM is calculated and the performance of the PSRM is optimized. By the built optimization model of the PSRM, static and transient analysis of the PSRM are analyzed based on Maxwell 2D. Asymmetrical half-bridge power converter circuit and control circuit are established based on the Simplorer. Connecting Maxwell and Simplorer, the dynamic model of the PSRM is constituted. Then, co-simulation of the PSRM is implemented. The simulation results show that the dynamic co-simulation model is able to regulate the phase currents distribution and output the corresponding propulsion force. The validity of the proposed dynamic model and co-simulation are verified.
{"title":"Dynamic model and co-simulation for a planar switched reluctance direct drive system based on maxwell and simplorer","authors":"Ji-lin Fang, Fen Xu, G. Cao, Su-Dan Huang","doi":"10.1109/ICIST.2014.6920523","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920523","url":null,"abstract":"To solve the problem of complex designing and time consuming for the design process of the PSRM, dynamic model of the PSRM is built and co-simulation of the PSRM is performed based on Ansoft/Maxwell and Ansoft/Simplorer in this paper. Taking a new type of PSRM as the research object, the configuration, principle, and mathematical model of the PSRM are clarified. With the Maxwell, the initial value of the PSRM is calculated and the performance of the PSRM is optimized. By the built optimization model of the PSRM, static and transient analysis of the PSRM are analyzed based on Maxwell 2D. Asymmetrical half-bridge power converter circuit and control circuit are established based on the Simplorer. Connecting Maxwell and Simplorer, the dynamic model of the PSRM is constituted. Then, co-simulation of the PSRM is implemented. The simulation results show that the dynamic co-simulation model is able to regulate the phase currents distribution and output the corresponding propulsion force. The validity of the proposed dynamic model and co-simulation are verified.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130997320","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920539
Hong Liu, Jianping Zheng, Jinfang Dou, B. Bai
The low-density parity-check (LDPC) code optimization for spatial modulation (SM) is studied using the extrinsic information transfer (EXIT) chart technique. First, for the maximum a posteriori probability (MAP) detector of the SM, its EXIT chart is characterized through Monte Carlo simulations. Then, the optimized degree distribution is acquired by matching the check node decoder curve to the combined detector and variable node decoder curve. Simulation results show that these optimized codes have performance gains from 0.3 to 1.3 dB, compared with the regular code and the optimized code for the additive Gaussian white noise channel, in 4×4 and 16×16 multiple-antenna systems.
{"title":"EXIT-chart-based LDPC code design for spatial modulation","authors":"Hong Liu, Jianping Zheng, Jinfang Dou, B. Bai","doi":"10.1109/ICIST.2014.6920539","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920539","url":null,"abstract":"The low-density parity-check (LDPC) code optimization for spatial modulation (SM) is studied using the extrinsic information transfer (EXIT) chart technique. First, for the maximum a posteriori probability (MAP) detector of the SM, its EXIT chart is characterized through Monte Carlo simulations. Then, the optimized degree distribution is acquired by matching the check node decoder curve to the combined detector and variable node decoder curve. Simulation results show that these optimized codes have performance gains from 0.3 to 1.3 dB, compared with the regular code and the optimized code for the additive Gaussian white noise channel, in 4×4 and 16×16 multiple-antenna systems.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127633762","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920403
Bao-chun Zhao, Yinghui Cheng
Establish a B2C e-commerce website service quality evaluation system, and utilize Analytic Hierarchy Process to calculate the weight of each index. The results show that, “Customer property security protection” “To deal with problems effectively” “Accurate information” “Personal information protection” and “Speed of the logistics” are the top five factors impacting evaluation of customers on the website service quality. According to the results, put forward some instructive suggestions for website operators.
{"title":"Research on B2C e-commerce website service quality evaluation based on analytic hierarchy process","authors":"Bao-chun Zhao, Yinghui Cheng","doi":"10.1109/ICIST.2014.6920403","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920403","url":null,"abstract":"Establish a B2C e-commerce website service quality evaluation system, and utilize Analytic Hierarchy Process to calculate the weight of each index. The results show that, “Customer property security protection” “To deal with problems effectively” “Accurate information” “Personal information protection” and “Speed of the logistics” are the top five factors impacting evaluation of customers on the website service quality. According to the results, put forward some instructive suggestions for website operators.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125584602","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920541
Y. Cai, Chao Ma, Pandeng Zhang, Jia Liu
Reconstructing central aortic pressure (CAP) from non-invasive bio-signals is challenging. Recent studies have shown a promising reconstruction method using peripheral arterial pressure together with blood flow waves. However, blood waves cannot be readily acquired. We thus proposed a novel approach to reconstruct CAP using dual-peripheral arterial pressure waves measured from brachial and radial arteries based on the wave separation and reconstruction method. According to the widely used three-element Windkessel model (Fig. 1), we re-formulated forward and backward wave equations in frequency domain in order to derive solutions from two peripheral blood pressure waves. Our results showed that this method can accurately reconstruct CAP.
{"title":"A novel method to reconstruct central aortic pressure signal using dual-peripheral pressure waves","authors":"Y. Cai, Chao Ma, Pandeng Zhang, Jia Liu","doi":"10.1109/ICIST.2014.6920541","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920541","url":null,"abstract":"Reconstructing central aortic pressure (CAP) from non-invasive bio-signals is challenging. Recent studies have shown a promising reconstruction method using peripheral arterial pressure together with blood flow waves. However, blood waves cannot be readily acquired. We thus proposed a novel approach to reconstruct CAP using dual-peripheral arterial pressure waves measured from brachial and radial arteries based on the wave separation and reconstruction method. According to the widely used three-element Windkessel model (Fig. 1), we re-formulated forward and backward wave equations in frequency domain in order to derive solutions from two peripheral blood pressure waves. Our results showed that this method can accurately reconstruct CAP.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126732428","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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