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

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Robustness of a Perceptually Lossless Medical Image Coder: Interpolation 感知无损医学图像编码器的鲁棒性:插值
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364793
S. Chai, David Wu, D. Tan, Henry Wu, D. Tan, Hong Ren Wu
{"title":"Robustness of a Perceptually Lossless Medical Image Coder: Interpolation","authors":"S. Chai, David Wu, D. Tan, Henry Wu, D. Tan, Hong Ren Wu","doi":"10.1109/ISPACS.2006.364793","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364793","url":null,"abstract":"Perceptually lossless medical image coding is an alternative for compressing medical images. It provides a solution to the challenge of delivering clinically critical information in the shortest time possible. In this paper, an investigation of the robustness of the perceptually lossless image coder is carried out by applying bilinear, biquadratic and bicubic standard and centered B-spline interpolation filters. In order to evaluate the visual performance, a subjective assessment was conducted consisting of 30 medical images and 6 image processing experts. Here, the perceptually lossless medical image coder was compared to the state-of-the-art JPEG-LS compliant LOCO and NLOCO image coders. Current results have shown that overall, there were no perceivable differences of statistical significance when the medical images were enlarged by a factor of 2","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"15 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":"121975404","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: 3
Efficient Positive Real Balanced Truncation of SISO Systems Via Cross-Riccati Equations 基于交叉riccati方程的SISO系统的有效正实平衡截断
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364914
C. Chu, N. Wong
{"title":"Efficient Positive Real Balanced Truncation of SISO Systems Via Cross-Riccati Equations","authors":"C. Chu, N. Wong","doi":"10.1109/ISPACS.2006.364914","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364914","url":null,"abstract":"This paper presents a highly efficient approach for performing positive real balanced truncation (PRBT) of single-input single-output (SISO) systems. The solution of two dual algebraic Riccati equations (AREs), whose high computational cost baffles conventional PRBT, is replaced with the solution of a cross-Riccati equation (CRE). The cross-Riccatian nature of the solution then allows simple construction of the projection matrices in PRBT. Application examples confirm the effectiveness of the proposed PRBT method over conventional schemes","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"24 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":"125006734","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
An Analytic Analysis of W-CDMA Smart Antennas Beamforming Using Complex Conjugate and DOA Methods 基于复共轭和DOA方法的W-CDMA智能天线波束形成分析
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364780
Chi-Min Li, Jia-Chyi Wu, I. Tang
{"title":"An Analytic Analysis of W-CDMA Smart Antennas Beamforming Using Complex Conjugate and DOA Methods","authors":"Chi-Min Li, Jia-Chyi Wu, I. Tang","doi":"10.1109/ISPACS.2006.364780","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364780","url":null,"abstract":"Wideband code division multiple access (W-CDMA) adopts the smart antenna techniques to increase the signal-to-interference-noise ratio (SINR) and system capacity. In this paper, we statistically derive an analytic result to prove the SINR performance for the two commonly used CC and DOA beamforming methods. Results show the both methods will have the same mean SINR performance and CC method will be more robust than the DOA method.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"23 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":"122124850","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
Study of Relationships between Intra-speaker's Speech Variability and Speech Recognition Performance 说话人语音变异性与语音识别性能关系的研究
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364831
S. Tsuge, Minoru Fukumi, M. Shishibori, Fuji Ren, K. Kita, S. Kuroiwa
{"title":"Study of Relationships between Intra-speaker's Speech Variability and Speech Recognition Performance","authors":"S. Tsuge, Minoru Fukumi, M. Shishibori, Fuji Ren, K. Kita, S. Kuroiwa","doi":"10.1109/ISPACS.2006.364831","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364831","url":null,"abstract":"Even if a speaker uses a speaker-dependent speech recognition system, speech recognition performance varies. For this reason, speech quality is varied by some factors, including emotion, background noise, and so on, even though the speaker and utterance remain constant. However, the relationships between intra-speaker's speech variability and speech recognition performance are not clear. Hence, we focus on the intra-speaker's speech variability which affects the speech recognition performances. To investigate these relationships, we have been collecting speech data since November 2002. Using a part of the speech corpus, we conducted speech recognition experiments. In this paper, we analyze the relationships between intra-speaker's speech variability and the phoneme accuracy by using the correlation analysis. For factors of the correlation analysis, we use a number of errors, a speaking rate, a likelihood. Analysis results show a strong correlation between the number of the substitution errors and the phoneme accuracy although the correlations of the number of the deletion and the insertion errors are low. Therefore, it is considered that there are overlaps between phonemes since the feature parameters vary at each speaking rate. For improving the phoneme accuracy, it is needed that we study a method which discriminates phonemes. On the other hand, although the correlation between the phoneme accuracy and the speaking rate seems to be low, a strong correlation between the speaking rate and the number of deletion errors and insertion errors are found. Since the number of the insertion errors and the number of the deletion errors were in the counterbalance relation, the correlation between the speaking rate and the phoneme accuracy was low. However, we consider that it is needed to normalize the speaking rate because the speaking rate influences on the number of the deletion and the insertion errors","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"1 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":"124679347","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
Improved Two-Valued and Three-Valued Integrand Codes for Real-Valued Self-Orthogonal Finite-Length Sequence 实值自正交有限长序列的改进二值和三值被积码
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364788
Peng Shao, Y. Tanada
{"title":"Improved Two-Valued and Three-Valued Integrand Codes for Real-Valued Self-Orthogonal Finite-Length Sequence","authors":"Peng Shao, Y. Tanada","doi":"10.1109/ISPACS.2006.364788","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364788","url":null,"abstract":"A real-valued self-orthogonal finite-length sequence has a zero-sidelobe autocorrelation function except at both shift ends. Two-valued and three-valued integrand codes for the sequence are effective for a practical application. This paper presents the improved two-valued and three-valued integrand codes. The allocation of code values in every time chip is optimized so that the Fourier spectrum of the equivalent multivalued pulse-width-modulation (PWM) code waveform at every chip may resemble each other. The codes are smoothed through Gaussian low pass filter. The sidelobes of the autocorrelation outputs are improved to be about 10-dB lower than those for the not-optimized codes.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"40 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":"129573467","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 Novel Approach for On-line Encoding Algorithm Using A Generating Function 一种基于生成函数的在线编码算法
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364801
N. Punthong, A. Surarerks
{"title":"A Novel Approach for On-line Encoding Algorithm Using A Generating Function","authors":"N. Punthong, A. Surarerks","doi":"10.1109/ISPACS.2006.364801","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364801","url":null,"abstract":"An encoding technique is an interesting problem in information theory (i.e., how to reduce the size of the textual material when information is continually sent from one point to another.) The important factors to improve efficiency of the encoding process are probability distribution and dependency of the input data. Some encoding algorithms focused on these factors are Huffman algorithm, Lempel-Ziv algorithm and enhance versions of them. In some cases, dependency of the input data is not significant, but the probability distribution remains considerable. In this paper, we propose a novel approach for an on-line encoding algorithm using a generating function that the encoding process performs in an on-line manner. Our concept is that the generating function must be constructed up to the probability distribution. Some experimental results show that our technique can apply to the normal distribution of input data","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"10 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":"130954763","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
Graphical Comparative Study on DCT-based Steganographic Methods 基于dct的隐写方法的图形比较研究
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364783
Koksheik Wong, K. Tanaka, Xiaojun Qi
{"title":"Graphical Comparative Study on DCT-based Steganographic Methods","authors":"Koksheik Wong, K. Tanaka, Xiaojun Qi","doi":"10.1109/ISPACS.2006.364783","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364783","url":null,"abstract":"This paper presents a graphical comparative study of steganographic methods in the DCT domain. This graphical representation allows at-one-glance comparison among steganographic methods, showing the relative performance of each method with respect to the ideal methods for the metrics considered. Six representative DCT-based steganographic methods are selected and fairly compared in terms of six significant evaluation criteria. From the comparison results, we found some trends in recent evolution of steganographic methods and possible future development directions.","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"2 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":"132322673","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
Noise Suppression with High Speech Quality Based on Kalman Filter 基于卡尔曼滤波的高语音质量噪声抑制
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364895
N. Tanabe, T. Furukawa, H. Matsue, S. Tsujii
{"title":"Noise Suppression with High Speech Quality Based on Kalman Filter","authors":"N. Tanabe, T. Furukawa, H. Matsue, S. Tsujii","doi":"10.1109/ISPACS.2006.364895","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364895","url":null,"abstract":"We propose a noise suppression algorithm based on Kaiman filter. The algorithm achieves a noise suppression with high speech quality under the condition of the AWGN (additive white Gaussian noise), from the canonical state space models with a state equation composed of the clean speech signal and an observation equation composed of the clean speech signal and AWGN. The special feature of the proposed algorithm is realization of high speech quality noise suppression utilizing only the Kalman filter, while the conventional algorithm utilizes the linear prediction algorithm and the Kalman filter. The simulation results show that the proposed method improved the noise suppression capability by about 5 dB than that of the conventional method","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"67 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132949050","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
A Low-Power and Low-Noise Amplifier for 3-5GHz UWB Applications 一种用于3-5GHz超宽带应用的低功耗低噪声放大器
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364864
Chun-Chieh Chen, Sheng-Hsiang Yen, Zhe-Yang Huang, Meng-Ping Chen, Yeh-Tai Hung
{"title":"A Low-Power and Low-Noise Amplifier for 3-5GHz UWB Applications","authors":"Chun-Chieh Chen, Sheng-Hsiang Yen, Zhe-Yang Huang, Meng-Ping Chen, Yeh-Tai Hung","doi":"10.1109/ISPACS.2006.364864","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364864","url":null,"abstract":"This paper presents a common gate low-power low noise amplifier (LNA) for DS-UWB low-band and MB-OFDM group-A ultra-wideband radio system. The LNA is designed and implemented in 0.18 mum RF CMOS process. Simulation results show that power gain of 15.4 dB, input and output matching lower than -10.6 dB and -13.3 dB, and a minimum NF of 3.8 dB can be achieved, while the power consumption is only 3.24 mW through 1.8 V power supply","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"33 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114119357","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
Unique-Word-Aided Linearized GMSK System with Frequency-Domain Decision Feedback Equalizer 基于频域决策反馈均衡器的唯一词辅助线性化GMSK系统
2006 International Symposium on Intelligent Signal Processing and Communications Pub Date : 2006-12-01 DOI: 10.1109/ISPACS.2006.364705
Jeng-Kuang Hwang, Chen-Yu Chen, R. Chung
{"title":"Unique-Word-Aided Linearized GMSK System with Frequency-Domain Decision Feedback Equalizer","authors":"Jeng-Kuang Hwang, Chen-Yu Chen, R. Chung","doi":"10.1109/ISPACS.2006.364705","DOIUrl":"https://doi.org/10.1109/ISPACS.2006.364705","url":null,"abstract":"A novel linearized Gaussian minimum shift keying (LGMSK) system is proposed for block data transmission. In each block, a known unique-word (UW) is inserted as guard interval, and a phase state return bit (PSRB) is also added to maintain LGMSK phase trellis consistency. It is shown that the transmit signal has near constant-envelope property. At the receiver, a frequency-domain decision-feedback-equalizer (FD-DFE) is designed to combat the joint effect of partial response signaling and the channel dispersion. With only a few feedback taps, the receiver can significantly outperform the FD linear equalizer. Compared with the Viterbi receiver, it has only 0.4-dB degradation at BER=10-6 over AWGN channel. Hence, the proposed system has the great merits of transmit power saving, high performance, and low receiver complexity, especially for high-rate application through long dispersion channel","PeriodicalId":178644,"journal":{"name":"2006 International Symposium on Intelligent Signal Processing and Communications","volume":"1 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":"114399060","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
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