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2006 International Symposium on Intelligent Signal Processing and Communications最新文献

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Accurate Direction-Of-Arrival Estimation Using Second-Order Differential of MUSIC Spectrum 基于MUSIC频谱二阶微分的精确到达方向估计
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364805
K. Ichige, Y. Ishikawa, H. Arai
{"title":"Accurate Direction-Of-Arrival Estimation Using Second-Order Differential of MUSIC Spectrum","authors":"K. Ichige, Y. Ishikawa, H. Arai","doi":"10.1109/ISPACS.2006.364805","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364805","url":null,"abstract":"This paper presents a high resolution direction-of-arrival (DOA) estimation method using second-order differential of the MUSIC spectrum. MUSIC method is paid attention as one of \"superresolution\" DOA estimation methods because of their brilliant characteristics, however MUSIC also has the problem of estimation accuracy in severe environments like low SNR, small number of snapshots, or incident waves from close angles. We now pay attention to the fact that the second-order differential of the MUSIC spectrum makes negative peaks around the original DOAs even when the MUSIC spectrum does not make peaks there. We try to estimate DOAs not by MUSIC spectrum but by the second-order differential of the MUSIC spectrum, and find its peaks for being estimated DOAs","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114751877","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: 9
An Improvement Method for Data Embedding to Printing Images Based on DCT 一种基于DCT的打印图像数据嵌入改进方法
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364784
Kouji Nakanishi, Mitsuji Muneyasut
{"title":"An Improvement Method for Data Embedding to Printing Images Based on DCT","authors":"Kouji Nakanishi, Mitsuji Muneyasut","doi":"10.1109/ISPACS.2006.364784","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364784","url":null,"abstract":"This paper proposes an improvement method for a data embedding technique to printing images. This embedding technique is based on discrete cosine transform (DCT) and pseudo number (PN) sequences. In the conventional method, deformations, such as rotation and scaling have given a serious defect to the extraction rate. To solve this problem, a new data embedding position and the processing by the resolution of scanner itself are applied. The gain control method is also improved. From the comparison between the proposed and conventional methods, the improvement of the extraction rate in the proposed method is shown.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"235 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131794336","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
Two-stage Frequency-domain Equalizer for Filtered Multi-tone Transmission Systems 滤波多音传输系统的两级频域均衡器
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364868
Kuo-Song Liao, Shyue-Win Wei
{"title":"Two-stage Frequency-domain Equalizer for Filtered Multi-tone Transmission Systems","authors":"Kuo-Song Liao, Shyue-Win Wei","doi":"10.1109/ISPACS.2006.364868","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364868","url":null,"abstract":"A two-stage frequency-domain equalizer (FEQ) for filtered multi-tone (FMT) transmission systems is presented. The presented two-stage FEQ is constructed by a traditional decision feedback equalizer (DFE) and a fixed-coefficient Wiener filter. According to complete simulations, it can be shown that the proposed two-stage FEQ can significantly reduce the number of taps in DFE and meanwhile improving its convergence speed","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"49 9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131863425","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 Compensation of Continuous-Time OTA-Based Bandpass Filter Employing Genetic Algorithm 基于遗传算法的连续时间ota带通滤波器补偿
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364848
R. Chaisricharoen, A. Lasingwong, K. Tepwong, B. Chipipop, B. Sirinaovakul
{"title":"A Compensation of Continuous-Time OTA-Based Bandpass Filter Employing Genetic Algorithm","authors":"R. Chaisricharoen, A. Lasingwong, K. Tepwong, B. Chipipop, B. Sirinaovakul","doi":"10.1109/ISPACS.2006.364848","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364848","url":null,"abstract":"The method for utilizing the GA to compensate the OTA-based bandpass filter is presented. The example structure is one of the most compact OTA-based biquad which is not suitable with the ordinary active/passive compensation methods. The compensation process results in admirable solutions within an incredibly short time. The 26 one-half fractional factorial experiment is conducted to observe the GA and biquad parameters that might significantly affected the level of compensation. Based on the experiment, the maximum number of generations, the population size, and the tournament size are roughly recommended","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131880846","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: 5
Lossless Data Hiding in the Spatial Domain for Image Tamper Detection 用于图像篡改检测的空间域无损数据隐藏
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364761
Seungwu Han, H. Jin, M. Fujiyoshi, H. Kiya
{"title":"Lossless Data Hiding in the Spatial Domain for Image Tamper Detection","authors":"Seungwu Han, H. Jin, M. Fujiyoshi, H. Kiya","doi":"10.1109/ISPACS.2006.364761","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364761","url":null,"abstract":"This paper proposes lossless data hiding method for image tamper detection. The proposed method embeds data in images and extracts data from images in the spatial domain. This method restores the original image as well as extracts hidden data from an image conveying hidden data. The proposed method uses one and only one parameter for each image to control embed and extract data. An image is divided into several blocks, and the image feature description for the block is hidden into the corresponding block itself. Hidden descriptions extracted from an image and generated from the recovered image are compared to detect tampering. The image quality of an image with hidden data is high so that nobody is aware that data are hidden. Experimental results show the effectiveness of the proposed method","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132165592","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: 9
7-GHz Inverted-F Antenna Monolithically Integrated with CMOS LNA CMOS LNA单片集成的7 ghz反f天线
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364881
D. Ueo, H. Osabe, K. Inafune, Masayuki Ikebe, Eiichi Sano, Masato Koutanit, Masayuki Ikedat, Koichiro Mashikot
{"title":"7-GHz Inverted-F Antenna Monolithically Integrated with CMOS LNA","authors":"D. Ueo, H. Osabe, K. Inafune, Masayuki Ikebe, Eiichi Sano, Masato Koutanit, Masayuki Ikedat, Koichiro Mashikot","doi":"10.1109/ISPACS.2006.364881","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364881","url":null,"abstract":"Transmitter and receiver antennas monolithically integrated with CMOS LSIs are strongly demanded for reducing the cost of wireless equipment. As the first step toward realizing high-performance antennas on lossy Si substrates, we clarify the design methodology and basic characteristics of inverted-F antennas used for the 7-GHz band corresponding to multi-band OFDM UWB group3 spectrum allocation. An inverted-F antenna along with a low-noise amplifier (LNA) are designed and fabricated using a 0.18-mum mixed signal/RF CMOS process with one poly and six metal layers. Comparisons between measured and calculated antenna gain characteristics are made. Measured antenna gain is about -25 dB in the multi-band OFDM UWB group3 frequency band. Fairly good agreement between measured and designed gains is obtained by taking account of the real geometry of the fabricated chip","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"473 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128546473","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: 4
A Study on Contour Line and Internal Area Extraction Method by using the Self-Organization Map 基于自组织地图的等高线和内部区域提取方法研究
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364748
E. D. Ob, Takuya Uetat, Yasuaki Sumit, Noboru Yabukitt, Susumu Matsumaet, Yoshihiro Fukumotot, Takao Tsukutanittt, Yutaka Fukuitttt
{"title":"A Study on Contour Line and Internal Area Extraction Method by using the Self-Organization Map","authors":"E. D. Ob, Takuya Uetat, Yasuaki Sumit, Noboru Yabukitt, Susumu Matsumaet, Yoshihiro Fukumotot, Takao Tsukutanittt, Yutaka Fukuitttt","doi":"10.1109/ISPACS.2006.364748","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364748","url":null,"abstract":"Recently, intelligent transport system (ITS) is actively developed. There are big development areas in it. Within those areas, the research on detection and recognition of the road sign is one of the most important development areas. In this paper, we show the process improvement in order to extract the contour line and recognize the road sign shape from it. We have proposed the new extraction method of the contour line and internal areas from the road sign instantaneously by using the self organization map (SOM)","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133468711","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: 9
Development of a Multimedia Stream Cipher Engine 多媒体流密码引擎的开发
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364718
M. Fukase, H. Takeda, Ryo Tenma, K. Noda, Yohei Sato, Ryota Sato, Tomoaki Satot
{"title":"Development of a Multimedia Stream Cipher Engine","authors":"M. Fukase, H. Takeda, Ryo Tenma, K. Noda, Yohei Sato, Ryota Sato, Tomoaki Satot","doi":"10.1109/ISPACS.2006.364718","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364718","url":null,"abstract":"Ever growing ubiquitous environment makes overall demands for security, speed, and power consciousness in processing huge amount of multimedia data. A practical solution to meet these demands is a safety aware, high-performed, and sophisticated single chip processor. According to this scheme, we have exploited a hardware cryptography-embedded multimedia mobile system composed of a dedicated processor called HCgorilla. A promising cipher technique conceived from this system is RAC (random addressing cryptography). Abstracting the potential feature of RAC from HCgorilla, we focus in this article the development of a multimedia stream cipher engine. This is really suited to the high speed safety communication of large quantity of multimedia data.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126981224","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: 11
Robust Identification of Motion Blur Parameters by Using Angles of Gradient Vectors 基于梯度矢量角度的运动模糊参数鲁棒识别
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364711
M. Sakano, N. Suetake, E. Uchino
{"title":"Robust Identification of Motion Blur Parameters by Using Angles of Gradient Vectors","authors":"M. Sakano, N. Suetake, E. Uchino","doi":"10.1109/ISPACS.2006.364711","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364711","url":null,"abstract":"The estimation of the point-spread function (PSF) is one of very important and indispensable tasks for the practical image restoration. Especially, for the motion blur, various PSF estimation algorithms have been developed so far. However, a majority of them becomes useless in the highly noisy environment. This paper describes a new robust PSF estimation algorithm based on Hough transform concerning gradient vectors, which can accurately and robustly estimate the motion blur PSF even in highly noisy case. The effectiveness and validity of the proposed algorithm are verified by applying it to the PSF estimation for noisy and motion blurred images.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116785532","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: 4
Blind Channel Estimation for MC-CDMA Systems with Long Spreading Codes 长扩频MC-CDMA系统的盲信道估计
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364867
Wen-le Bai, Shu-jun Guo, Chang-nian Zhang, Chang-liu Niu, Ze-min Liu
{"title":"Blind Channel Estimation for MC-CDMA Systems with Long Spreading Codes","authors":"Wen-le Bai, Shu-jun Guo, Chang-nian Zhang, Chang-liu Niu, Ze-min Liu","doi":"10.1109/ISPACS.2006.364867","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364867","url":null,"abstract":"This paper focuses on the blind channel estimation for MC-CDMA systems with long (aperiodic) spreading codes. The channel impulse response plays an important role in estimation of the transmitted symbol. However, due to the long spreading codes, the time-varying effect makes the channel estimation difficult. For this case, a blind channel estimation algorithm called TCA (transpose column-averaging) and its simplified algorithm are proposed in this paper. The proposed algorithms are easily implemented, and can be used not only in the system with aperiodic spreading codes but also in the system with short (periodic) spreading codes. The results of computer simulation illustrate its performance in different condition","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126106516","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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