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2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)最新文献

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Study on offset reduction method for a fully differential filter employing symmetrical floating impedance scaling circuits 采用对称浮动阻抗缩放电路的全差分滤波器的偏置减小方法研究
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824727
F. Matsumoto, Shota Matsuo, Syuzo Nishioka, H. Abe, T. Ohbuchi
{"title":"Study on offset reduction method for a fully differential filter employing symmetrical floating impedance scaling circuits","authors":"F. Matsumoto, Shota Matsuo, Syuzo Nishioka, H. Abe, T. Ohbuchi","doi":"10.1109/ISPACS.2016.7824727","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824727","url":null,"abstract":"In this paper, a method to reduce the offset voltage of a fully differential filter employing symmetry-type floating impedance scaling (SFIS) circuits with prevention of wasteful power consumption is proposed. The problem of the filter employing the conventional SFIS circuit and a common-mode rejection (CMR) circuit is that DC offset voltages are high. In order to reduce the offset voltages, much operating currents are necessary for high gain amplifier in the CMR circuit. The proposed solution is to reduce the offset voltage by unifying a common-mode feedback (CMFB) circuit and the SFIS circuit unlike an ordinary way that the CMFB is combined with an OTA or an OPamp. The validity of the proposed technique is examined by simulation. The offset voltage of the 1st-order fully differential active lowpass filter employing the proposed circuit is about 1.56mV. Comparing the current consumption of proposed and the conventional SFIS circuits, the proposed one is reduced by 35.5%.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121498828","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}
引用次数: 1
Processing time reduction of tone mapping based on iterative shrinkage smoothing using parallel processing 基于迭代收缩平滑并行处理的色调映射处理时间缩短
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824739
Seijiro Imai, Dabwitso Kasauka, Hiroshi Tsutsui, Takashi Imagawa, H. Okuhata, Y. Miyanaga
{"title":"Processing time reduction of tone mapping based on iterative shrinkage smoothing using parallel processing","authors":"Seijiro Imai, Dabwitso Kasauka, Hiroshi Tsutsui, Takashi Imagawa, H. Okuhata, Y. Miyanaga","doi":"10.1109/ISPACS.2016.7824739","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824739","url":null,"abstract":"Iterative shrinkage smoothing algorithm can perform image smoothing with eliminating fine details and preserving principal edges in an image. However, real time processing is difficult due to large processing time when input image size is large. By utilizing downscaled image of an input image, the processing time can be dramatically reduced. In this case, however, the information of preserved principal edges is not accurate. Considering the applications utilizing such edge preserving smoothing algorithms, such as image tone mapping and detail enhancement, inaccurate principal edge information degrades the quality of resulted images. In this paper, we focus on tone mapping in the applications and propose processing time reduction method of tone mapping based on iterative shrinkage smoothing by utilizing parallel processing. Experimental results show that the proposed method improves the frame rates to 16 and 10 times for VGA and full HD resolutions, respectively, compared to single process implementation.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"1_OS 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127818265","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}
引用次数: 0
Development of stance correction system for billiard beginner player 台球初学者姿态校正系统的研制
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824701
M. Mishima, A. Suganuma
{"title":"Development of stance correction system for billiard beginner player","authors":"M. Mishima, A. Suganuma","doi":"10.1109/ISPACS.2016.7824701","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824701","url":null,"abstract":"The billiard is necessary to acquire proper stance. If the player hit the ball in irregular stance, he or she would occur that mishits or the ball does not roll to the aimed place. Learning and using proper stance is the most critical aspect of a person's early billiard career. Thereby, we have been developing stance correction system. When the rear elbow is a right angle or the forward arm stretches, that stance is correct. Therefore, this system captures the player using the Kinect, and compares the angle of rear elbow and forward shoulder with thresholds. Using this system, the beginner can enjoy if he or she participates in the game.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125615199","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}
引用次数: 2
Threshold decision for rank adaptation based on cumulative channel capacity 基于信道累积容量的等级自适应阈值决策
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824742
Kazuki Aono, N. Sasaoka, Y. Itoh
{"title":"Threshold decision for rank adaptation based on cumulative channel capacity","authors":"Kazuki Aono, N. Sasaoka, Y. Itoh","doi":"10.1109/ISPACS.2016.7824742","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824742","url":null,"abstract":"The channel capacity is improved by MIMO (Multiple Input Multiple Output) increasing the number of transmit and receive antennas. However, it is difficult for a receiver to decode symbols when the rank of a MIMO channel is less than the number of transmitted antennas. Thus, rank adaptation has been proposed to control the number of transmitted streams in accordance with propagation environments. Conventional rank adaptation degrades the performance of controlling the number of streams in an unanticipated channel environment. Therefore, we proposed the rank adaptation using cumulative channel capacity. Although the rank adaptation has potential to improve the channel capacity, the performance depends on the threshold, which is used to change the number of streams. Therefore, threshold decision, which is robust to varying channel environments, is introduced into the rank adaptation based on cumulative channel capacity in this paper.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122893594","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}
引用次数: 1
Correlation based active regions identification from fMRI data 基于fMRI数据关联的活动区识别
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824771
Nattapol Aunsri, Waralak Chongdarakul
{"title":"Correlation based active regions identification from fMRI data","authors":"Nattapol Aunsri, Waralak Chongdarakul","doi":"10.1109/ISPACS.2016.7824771","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824771","url":null,"abstract":"The studies of neuroimaging have been shown that odorant-induced responses to the prolonged stimulation in primary olfactory cortex (POC) are characterized by a rapidly habituating time course. This paper is concerned the identification of the active regions in the brain after that stimulation. The correlation technique is used to obtain the quantity that could be a parameter to exhibit the regions of interest. This paper also illustrates the ways to remedy problems that occurred during data acquisition process. The real functional magnetic resonance imaging (fMRI) data obtained from the experiment is used to evaluate the performance of the method.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115465369","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}
引用次数: 1
Blind signal separation based on band division using QMF Bank 基于QMF库分带的盲信号分离
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824684
Kazuaki Matsushima, H. Matsumoto
{"title":"Blind signal separation based on band division using QMF Bank","authors":"Kazuaki Matsushima, H. Matsumoto","doi":"10.1109/ISPACS.2016.7824684","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824684","url":null,"abstract":"Blind signal separation method is the method that the source signals are obtained by separating only the mixed signals. Generally, separation precision is lower when the basic method of blind signal separation is used for the sound signals. It is the cause that the power of the sound signals is concentrated in the low-frequency band. For the problem, we already considered that the method of the blind signal separation using QMF. Specifically, the mixed signals are divided into two frequency bands, and we perform suitable separation for each two bands. As the result, the conventional method has higher separation precision than the basic method. However, in the low-frequency band, power spectrum is not constant for frequency. Therefore, it is expected that the separation precision is higher than the conventional method by performing the suitable separation for each of signals based on the division to several narrow frequency bands on the low-frequency band. Then, in this paper, we propose the method that has higher separation precision and we evaluate the proposed method by computer simulation.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116194831","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}
引用次数: 0
A self-sustaining unmanned aerial vehicle routing protocol for smart farming 一种用于智能农业的自维持无人机路由协议
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824758
Prusayon Nintanavongsa, Weerachai Yaemvachi, Itarun Pitimon
{"title":"A self-sustaining unmanned aerial vehicle routing protocol for smart farming","authors":"Prusayon Nintanavongsa, Weerachai Yaemvachi, Itarun Pitimon","doi":"10.1109/ISPACS.2016.7824758","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824758","url":null,"abstract":"Increasing agricultural productivity has been a long quest for farmers and only a few can achieve it. One major factor that hinders them to achieve such goal is the lack of proper agricultural monitoring technique. Recent advancement in technology has enabled the integration of sensor networks and traditional farming, resulting in effective monitoring through smart farming. However, there exists a hefty investment in equipment and infrastructure installation throughout the coverage area. We design two routing approaches, called Location-agnostic (LA) and Location-specific (LS) protocols, to facilitate the self-sustaining agricultural monitoring platform, requiring no infrastructure installation, comprises of Unmanned Aerial Vehicle (UAV) with solar energy harvesting and wireless power transfer capability. The LA protocol does not require location information of monitoring stations to be visited prior to the flight, and is useful for dynamic environment. The LS protocol relies on the complete view of the topology prior to the flight and is suitable for static environment. These protocols determine the optimal UAV routing path from a set of monitoring stations under various conditions. Through a combination of simulation and experimentation studies, we demonstrate significant energy efficiency and coverage area improvement over the classical routing protocol.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126092068","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}
引用次数: 8
Valiable frequency characteristics multi-channel on-chip patch-clamp system using 0.18 um CMOS technology 采用0.18 um CMOS技术的可靠频率特性多通道片上膜片钳系统
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824689
M. Kubo, T. Kosaka, Takanori Miyawaki, K. Ito, N. Nakano
{"title":"Valiable frequency characteristics multi-channel on-chip patch-clamp system using 0.18 um CMOS technology","authors":"M. Kubo, T. Kosaka, Takanori Miyawaki, K. Ito, N. Nakano","doi":"10.1109/ISPACS.2016.7824689","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824689","url":null,"abstract":"Patch-clamp measurement system is one of the useful techniques in the field of Electrophysiology. This technique makes it possible to measure ion current and is expected to contribution of the treatment of neurological disease and elucidation of the neuronal activity. In this paper, we propose multi-channel patch-clamp measurement system. The system is composed of I–V converter, parasitic components compensation circuit, programmable gain amplifier, anti-aliasing filter, multiplexer, and serial to parallel converter. The current-to-voltage conversion rate of the whole system is a maximum 379 Gohm. The input referred current noise is achieved 1.86 pArms in simulation, 2.09 pArms in measurement. In order to fine tune the cutoff frequency of entire system, the variable capacitance is used for the filter. It is possible to eliminate the influence of variations between the channels in a multi-channel system. The system was fabricated using the 0.18um CMOS process. 8-channel system is implemented in a chip size of 2.5 mm times 5 mm.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125196646","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}
引用次数: 0
Verification of search process in CSD coefficient FIR filter design CSD系数FIR滤波器设计中搜索过程的验证
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824710
Tomohiro Sasahara, K. Suyama
{"title":"Verification of search process in CSD coefficient FIR filter design","authors":"Tomohiro Sasahara, K. Suyama","doi":"10.1109/ISPACS.2016.7824710","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824710","url":null,"abstract":"In this research, several design methods of FIR (Finite Impulse Response) filters with CSD (Canonic Signed Digit) coefficient are compared to investigate a search process of each method. The design problem is formulated as a 1, 0, −1 combinatorial optimization problem. In this problem, high computation time is required to obtain the optimal solution. Thus, many design methods using metaheuristic approaches have been proposed. In this study, the search process of design methods is verified. As a result, the differences between the design methods are clarified and thus it is expected that some cues for improving the performance can be attained.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121757772","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}
引用次数: 0
Cross-correlation functions with binary signal involving phase information for speech enhancement 包含相位信息的二值信号相互关函数用于语音增强
2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS) Pub Date : 2016-10-01 DOI: 10.1109/ISPACS.2016.7824729
Kyohei Mitani, Yosuke Sugiura, T. Shimamura
{"title":"Cross-correlation functions with binary signal involving phase information for speech enhancement","authors":"Kyohei Mitani, Yosuke Sugiura, T. Shimamura","doi":"10.1109/ISPACS.2016.7824729","DOIUrl":"https://doi.org/10.1109/ISPACS.2016.7824729","url":null,"abstract":"In this paper, adding phase information to the cross-correlation function between speech signal and its binary signal, we propose a speech enhancement method in noisy environments. Methods to connect the auto-correlation function periodically or utilize exponentiated amplitude spectrum are known as a correlation function based approach for speech enhancement. In the conventional methods, spectral square distortion occurs. In the proposed method, by using the binary signal to calculate the cross-correlation function, it is possible to mitigate the influence of spectral square distortion. Experimental results show that the proposed method effectively works especially in non-stationary noise environments.","PeriodicalId":131543,"journal":{"name":"2016 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131366030","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}
引用次数: 1
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