{"title":"Study on the decoding algorithm for LDPC based on DMB-TH","authors":"G. Wan, Yan-fen Luo, Xun Liu, Decun Dong","doi":"10.1109/ICIT.2009.4939498","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939498","url":null,"abstract":"Terrestrial Digital Multimedia TV/Handle Broadcasting (DMB-TH) is a newly upcoming framing structure, channel coding and modulation for digital television terrestrial broadcasting system standard of China, which is recently drafted and is ready to be verified in order to deploy mobile multimedia broadcasting services for the public. The adoption of strong channel coding techniques appears to be of key importance for mobile operators and broadcasters. Low-Density Parity-Check (LDPC) codes have been widely considered as error-correcting codes for next generation communication systems. A good LDPC decoder design requires both implementation friendly LDPC codes and efficient decoder architectures. The quality of LDPC code is crucial in determining the coding gain and implementation complexity of LDPC hardware decoders. This paper presents a turbo-decoding message-passing algorithm (TDMP) based LDPC code search algorithm with hardware considerations. The main advantages of the proposed algorithm over the DMB-TH standard decoding algorithm are 1) improvement in coding gain by an order of magnitude at high signal-to-noise ratio (SNR), 2) reduced decoder complexity. The performance of the proposed TDMP architecture is shown by the comparison of simulation results.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123679755","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}
{"title":"Development of a self-adjustment methodology for a maintenance-free stereo camera","authors":"M. Nakagawa, Y. Kawai, F. Tomita","doi":"10.1109/ICIT.2009.4939657","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939657","url":null,"abstract":"Stereo vision systems and hand-eye systems in an intelligent factory must be able to tolerate vibration in the stereo system and must have high robustness against camera parameter changes during long-term operation. We propose a self-adjustment methodology to achieve maintenance-free stereo cameras. The methodology aims to achieve autonomous recovery of stereo camera rotation parameters, even if the cameras rotate after suffering a weak impact. In autonomous recovery, the self-adjustment procedure modifies the camera rotation parameters to measure objects correctly. We also conduct accuracy verification to validate our approach that stereo camera rotation parameters can be recovered using an active stereo camera in some prepared test environments. Additionally, we verify the validity of our approach through experiments, which include corresponding points acquisition via the correlation coefficient methodology.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123743796","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}
{"title":"A shelf antenna using near-field without dead zones in UHF RFID","authors":"J. Hong, J. Choo, J. Ryoo, C. Choi","doi":"10.1109/ICIT.2009.4939492","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939492","url":null,"abstract":"This paper presents a shelf antenna for near-field RFID systems which has an electromagnetic field distribution characteristic without any dead zones presented widely in the vicinity of reader antennas. These dead zones are caused by the electric-magnetic field cancelation since an incident wave is summed with the reflected wave caused by the terminals on the feed line of an antenna. The proposed antenna is made up of a feed line on the bottom layer and a meander line on the top layer in a rectangular wave guide. The feed line acts as a principle of Standing wave having periodical dead zones and the meander line acts as a radiator coupled with the feed line of bottom layer. Therefore, these reactions between the feed line and the meander line make the proposed shelf antenna eliminate the effect of dead zones on the surface of the antenna properly.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128549023","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}
{"title":"Power-assist control switching from adaptive nonstationary servo control to force sensorless nonstationary impedance control","authors":"S. Hara, Yoji Yamada, Suwoong Lee","doi":"10.1109/ICIT.2009.4939487","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939487","url":null,"abstract":"Many power-assist systems for industrial uses possess simple power-assisting function only. The authors studied on the positioning method of a cart using a smooth switching from the servo access control for the conveyance function to the force sensorless impedance control (FSLIC) for the power-assisting function. The nonstationary optimal control method and the nonstationary impedance control law were applied. However, the optimal control method requires the offline calculations for generating time-varying feedback gains. For actual problems including parameter variations, this characteristic is inconvenient. From such a point of view, this study investigates the use of the adaptive nonstationary servo control (ANSSC) technique instead of the optimal control method. Therefore, this paper discusses the control method switching from ANSSC based access to FSLIC based power-assist. The effectiveness of this method is verified experimentally.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130315597","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}
{"title":"A biological inspired improvement strategy for Particle Filters","authors":"J. Zhong, Y. Fung","doi":"10.1109/ICIT.2009.4939539","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939539","url":null,"abstract":"Particle Filters (PF) is a model estimation technique based on simulation. But two problems, namely particle impoverishment and sample size dependency, frequently occur during the particle updating stage and these problems will reduce the accuracy of the estimation results. In order to avoid these problems, Ant Colony Optimization is incorporated into the generic particle filter before the updating stage. After the optimization, particle samples will move closer to their local highest posterior density function and better estimation results can be produced.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126757611","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}
{"title":"Facilitating ad-hoc abstraction to improve end-user programmed decision support tools","authors":"H. Thomas","doi":"10.1109/ICIT.2009.4939691","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939691","url":null,"abstract":"Spreadsheets are the tool of choice amongst agricultural researchers for creating decision support tools. Spreadsheet programming is however constrained by its inherent simplicity. Spreadsheet cells combine the functions of user interface, program logic and data storage, making it difficult for end-users to conceive of ways to isolate user data. In this paper I describe the implementation of an ad-hoc abstraction mechanism in a spreadsheet application that links named cells to scenarios so user data can be isolated and saved in separate files. The strength of this solution is the simple notion that data will find its way back to the original cells, regardless of how the spreadsheet is changed. This allows spreadsheets to be upgraded in the field without the need to re-enter user data.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124238901","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}
{"title":"Function approximation using robust fuzzy-GreyCMAC method","authors":"Hen-Kung Wang, Jonq-Chin Hwang, Po-Lun Chang, Fei-Hu Hsieh","doi":"10.1504/IJMIC.2011.043144","DOIUrl":"https://doi.org/10.1504/IJMIC.2011.043144","url":null,"abstract":"In this paper, we propose a novel GreyCMAC with robust FCM (RFCM) method for function approximation. The advantages of CMAC neural network are fast learning convergence, capable of mapping nonlinear functions quickly due to its local generalization of weight updating. In order to overcome the problems of function approximation for a nonlinear system with noise and outliers, a robust fuzzy clustering method (RFCM) is proposed to effectively mitigate the influence of noise and outliers and then a GreyCMAC model is used to learn the nonlinear system's features for function approximation. There are two core ideas in the proposed method: (1) The robust fuzzy c-means algorithm (RFCM) is proposed to greatly mitigate the influence of data noise and outliers; and (2) A Grey-based CMAC (GreyCMAC) is proposed to locate a given fine piecewise linear data domain by RFCM so that a neural network can be constructed for function approximation. The conducted experimental results clearly indicate that the proposed approach provides good performance.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"195 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114088254","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}
A. Belbachir, M. Hofstatter, M. Litzenberger, P. Schon
{"title":"Performance evaluation of the ultra high-speed synchronous arbitration for transient pixels' events","authors":"A. Belbachir, M. Hofstatter, M. Litzenberger, P. Schon","doi":"10.1109/ICIT.2009.4939484","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939484","url":null,"abstract":"In this article, an ultra high-speed synchronous arbitration process for transient pixels' data is presented and evaluated. Enabling a high-precision timestamping, this system demonstrates its uniqueness for handling high peak rates and preserving the main advantage of the neuromorphic electronic systems, that is high and accurate temporal resolution of the pixels' events. By attaching a timestamp to the event at its occurrence instant, the synchronous arbitration concept provides accuracy better than 1 µs. Both synchronous and (state-of-the-art) asynchronous arbiters are implemented in a neuromorphic dual-line vision sensor chip in a standard 0.35 µm standard CMOS process. The performance analysis of the synchronous arbitration is provided and discussed for high-speed applications.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124032057","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}
{"title":"Gyro sensor drift compensation by Kalman filter to control a mobile inverted pendulum robot system","authors":"Hyungjik Lee, Seul Jung","doi":"10.1109/ICIT.2009.4939502","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939502","url":null,"abstract":"In this paper, a sensor fusion technique of low cost sensors such as a gyro sensor and a tilt sensor to measure the balancing angle of the inverted pendulum robot system accurately is implemented. The complimentary filter consisting of the lowpass filter for the gyro sensor and the highpass filter for the tilt sensor are used based on the frequency response characteristics of those sensors. The Kalman filter is used to estimate the angle based on filtered sesnor data. Experimental studies of balancing and position control of the mobile inverted pendulum robot system are conducted to validate the proposed estimation method.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128103790","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}
{"title":"Haptic processing for transmitting real-world haptic information","authors":"Yukifumi Kobayashi, S. Katsura","doi":"10.1109/ICIT.2009.4939713","DOIUrl":"https://doi.org/10.1109/ICIT.2009.4939713","url":null,"abstract":"Artificial acquisition, preservation and reproduction of human sensations are basic technologies of communication engineering. For example, auditory information is obtained by a microphone, and a speaker reproduces it by artificial means. Furthermore, a video camera and a television make it possible to transmit visual sensation by broadcasting. On the contrary, haptic information is subject to the Newton's “law of action and reaction” in the real world. Since such haptic information has bilateral characteristics, a device which acquire, preserve, and reproduce the information has not been established. From the point of view, real-world haptics is one of the key technologies for realization of haptic communications. In this paper, a novel haptic processing technique is proposed to process the acquired haptic information. A master-slave bilateral system is used to acquire the real-world haptic information. The bilateral system is composed of two linear motors controlled by acceleration control based on a disturbance observer. The disturbance observer obtains the haptic information from a human and the environment without force sensors. The acquired haptic information is analyzed by Fourier transformation and transmitted with frequency scaling. As a result, it is possible to change the reproduced haptic sensation from the remote environment. The experimental results show the viability of the proposed method.","PeriodicalId":405687,"journal":{"name":"2009 IEEE International Conference on Industrial Technology","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125642770","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}