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2012 IEEE 11th International Conference on Signal Processing最新文献

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A novel motion compensation method for high-resolution ISAR imaging 一种新的高分辨率ISAR成像运动补偿方法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491944
Juan Chen, Yunneng Yuan, Jun Luan
{"title":"A novel motion compensation method for high-resolution ISAR imaging","authors":"Juan Chen, Yunneng Yuan, Jun Luan","doi":"10.1109/ICOSP.2012.6491944","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491944","url":null,"abstract":"Large distortion in inverse synthetic aperture radar (ISAR) image of a moving target is a result of high speed and acceleration experienced by the target during the image period. To improve the quality of such images, a novel method based on the traditional envelop correlation algorithm and reference range profiles for motion compensation in ISAR imaging is proposed in this paper, according to which, a compensated image with high precision can be attained.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"173 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132888480","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
Initialization of adaptation by sufficient statistics using phonetic tree 利用语音树的充分统计初始化自适应
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491535
Zbynek Zajíc, Lukás Machlica, Ludek Muller
{"title":"Initialization of adaptation by sufficient statistics using phonetic tree","authors":"Zbynek Zajíc, Lukás Machlica, Ludek Muller","doi":"10.1109/ICOSP.2012.6491535","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491535","url":null,"abstract":"In this work we deal with the problem of small amount of data when estimating a feature transformation for the speaker adaptation of an acoustic model. Our goal is to compensate for the lack of adaptation data by a proper initialization of transformation matrices. Methods used in such situations are described, they are based on collecting additional accumulated statistics from nearest speakers. The proposed initialization approach is based on accumulated statistics too, but it incorporates also phonetic information when selecting the “nearest” statistics. Initialization methods compensating for the absence of actual speaker's data are tested on telephone recordings with different amounts of adaptation data. In worst situation with extremely small amount of adaptation data relative improvement of 5% is obtained.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132932660","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
Study on frequency resolution of spectral estimators using non-linear functions of the covariance matrix 基于协方差矩阵非线性函数的频谱估计频率分辨率研究
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491646
Jun Chen, Yewei Wu, An Li
{"title":"Study on frequency resolution of spectral estimators using non-linear functions of the covariance matrix","authors":"Jun Chen, Yewei Wu, An Li","doi":"10.1109/ICOSP.2012.6491646","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491646","url":null,"abstract":"This paper studies the frequency resolution of two existing spectral estimators, where one is a generalization of the minimum variance spectral estimators (GMVSE) and the other is Pisarenko's non-linear spectral estimators (PNLSE). By this study, we show the uncovered relationship between the non-linear parameter and the frequency resolution for both the GMVSE and the PNLSE. The results bring out a clear guideline on choosing the parameters for both the GMVSE and the PNLSE to avoid missing any sinusoids.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"279 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133036506","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
Adaptive methods for highly impulsive noise restraining in CPFSK receiver CPFSK接收机高脉冲噪声抑制的自适应方法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491627
Dong Wen, Bo Jiang, Cuihai Liu
{"title":"Adaptive methods for highly impulsive noise restraining in CPFSK receiver","authors":"Dong Wen, Bo Jiang, Cuihai Liu","doi":"10.1109/ICOSP.2012.6491627","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491627","url":null,"abstract":"It is well known that when communication signal is contaminated by highly impulsive noise, conventional nonlinear devices may perform poorly in communication system. This paper presents an adaptive impulsive noise restraining processor (AINRP) to restrain highly impulsive noise in CPFSK receiver. Results of researches show the waveform predictor of AINRP could predict the waveform of CPFSK signal quickly and exactly. Compared to clipper, it can reduce the signal distortion which is caused by nonlinear processing, then decrease the probability of error judgment during demodulation, improve the performance of receiver, especially in highly impulsive noise environment.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133305173","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 inter/intra-pulse partly coherent jamming style against Synthetic Aperture Radar 针对合成孔径雷达的脉冲间/脉冲内部分相干干扰方式
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491977
Hong-xu Huang, Yi-yu Zhou
{"title":"An inter/intra-pulse partly coherent jamming style against Synthetic Aperture Radar","authors":"Hong-xu Huang, Yi-yu Zhou","doi":"10.1109/ICOSP.2012.6491977","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491977","url":null,"abstract":"This paper proposed a kind of two-dimension partly coherent jamming style against Synthetic Aperture Radar (SAR) named stepped time-delay repeater jamming. Its repeated time-delay increases or deduces by a fixed increment during the irradiation of SAR. The research shows that the presented jamming style can obtain both range and azimuth coherent processing gains when through SAR system. In addition, its SAR imaging output covers some region which could be applied for distributed targets protection. Theoretical analysis and simulation experiments verify its validity.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132765698","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
Discrete wavelet transform implementation based on FPGA 基于FPGA的离散小波变换实现
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491519
Juan Li, Binghua Su, Yongming Yan, Caigao Jiang
{"title":"Discrete wavelet transform implementation based on FPGA","authors":"Juan Li, Binghua Su, Yongming Yan, Caigao Jiang","doi":"10.1109/ICOSP.2012.6491519","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491519","url":null,"abstract":"In this paper, a semi-cache parallel circuit structure which is based on FPGA process system combined with the existing Mallat discrete wavelet transform algorithm is introduced. The virtex-6 FPGA development board implements this structure in real-time, and the functional modules of DSP48E1 in the virtex-6 serves as the improvement of data accuracy. Modelsim is responsible for simulation of each module unit in Verilog HDL. Compared with the conventional algorithm, this architecture reduces half of the on-chip storage resources. Besides, in comparison with the performance of processing time on OMAP3530, Simulation results demonstrate that this state-of-art method shows more superiority.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133174990","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
Performance analysis of cognitive MAC under saturation condition using Statistical Channel Allocation 基于统计信道分配的饱和条件下认知MAC性能分析
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491831
Chunxiao Zhang, Yang Xiao
{"title":"Performance analysis of cognitive MAC under saturation condition using Statistical Channel Allocation","authors":"Chunxiao Zhang, Yang Xiao","doi":"10.1109/ICOSP.2012.6491831","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491831","url":null,"abstract":"An efficient cognitive MAC protocol should be able to predict future spectrum usage to enable dynamic spectrum access (DSA) to any continuous part of the spectrum without (or with minimal) interference to primary users. To fulfill such a goal, we present a new system model to evaluate the performance of cognitive networks in this paper. Based on this model, we conducted simulations using NS2 to show the performance including throughput, delay and loss-rate of C-MAC under saturation conditions, followed by the theoretical analysis. In this research, the model is designed using the CSMA/CA based algorithm and Statistical Channel Allocation algorithm (SCA-MAC) to do real-time opportunistic access to the spectrum.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128906107","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
The experimental study and improvement of helicopter rotor non-contact infrared icing detection system 直升机旋翼非接触式红外结冰检测系统的实验研究与改进
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491692
Jie Zhang, Ruoxia Li, Quan Zhang
{"title":"The experimental study and improvement of helicopter rotor non-contact infrared icing detection system","authors":"Jie Zhang, Ruoxia Li, Quan Zhang","doi":"10.1109/ICOSP.2012.6491692","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491692","url":null,"abstract":"Based on the description of the non-contact infrared helicopter rotor icing detection system, the paper points out the disadvantages of the system in overcoming the influence of actual flapping and pitching motion of rotor blade through numerous static and dynamic experiments. Then the paper puts forward two methods-the improved DSP algorithm and changing the reflection characteristic of the rotor surface-to improve the performance of the system. The paper then uses experiments to prove that the system has achieved better performance using the two methods.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134503642","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
MIMO cognitive radio system interference cancellation based on protograph LDPC codes 基于原型LDPC码的MIMO认知无线电系统干扰消除
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491810
Kaiyao Wang, Yang Xiao, Yongli An
{"title":"MIMO cognitive radio system interference cancellation based on protograph LDPC codes","authors":"Kaiyao Wang, Yang Xiao, Yongli An","doi":"10.1109/ICOSP.2012.6491810","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491810","url":null,"abstract":"In the current MIMO cognitive radio system, the cognitive user (CU) and the primary user (PU) cannot communicate simultaneously in a channel. In order to solve this problem, this paper proposes a novel scheme for MIMO cognitive radio system based on protograph LDPC codes and interference cancellation. Protograph LDPC codes are applied to MIMO cognitive radio system in this approach, which can cancel multi-user interference and channel noise interference. The core idea of the proposed approach is that, depending on protograph LPDC codes and the difference of channel fading between the same type users (CU1 to CU2, PU1 to PU2) and different type users (CU1 to PU2, PU1 to CU2), the other co-channel user signals and channel noise are looked as a new interference at the given CU or PU receiver. By multiplying received signal with a zero forcing (ZF) interference cancellation matrix and decoding modified received signal, the CU or PU receiver can obtain the desired information from the same type user. The proposed approach can increase one time of communication capacity in MIMO cognitive radio system. Comparing with the approach of directly extracting user information, our approach obtained about 12dB coding gain in Rayleigh flat-fading channel.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133819420","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
Class-specific artificial immune recognition method for hyperspectral image classification 高光谱图像分类的类特异性人工免疫识别方法
2012 IEEE 11th International Conference on Signal Processing Pub Date : 2012-10-01 DOI: 10.1109/ICOSP.2012.6491714
Qingjie Meng, Yanning Zhang, Weiwei, Yuemei Ren, Hong-wei She
{"title":"Class-specific artificial immune recognition method for hyperspectral image classification","authors":"Qingjie Meng, Yanning Zhang, Weiwei, Yuemei Ren, Hong-wei She","doi":"10.1109/ICOSP.2012.6491714","DOIUrl":"https://doi.org/10.1109/ICOSP.2012.6491714","url":null,"abstract":"Artificial immune recognition system (AIRS), as an efficient and successful computational intelligence method, has been widely used for classification. However, this method is seldom used for hyperspectral image classification due to its complexity. To address this problem, a class-specific model based on AIRS, named as Single Class Learning Network AIRS (SCLN-AIRS), is proposed in this paper to improve the classification accuracy for hyperspectral images compared with AIRS based method. For SCLN-AIRS, the outliers of training samples from irrelevant classes are ignored first. Then, a novel MC evolution strategy is proposed to prevent memory cells being affected by other ones from different classes. In the novel model, the calculation complexity is guaranteed by the fact that the class is expressed only by few memory cells while classification result is improved. Experimental results on AVIRIS dataset demonstrate the effectiveness of the proposed method for hyperspectral image classification.","PeriodicalId":143331,"journal":{"name":"2012 IEEE 11th International Conference on Signal Processing","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115648809","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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