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Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers最新文献

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Practical cancellation of nonlinear ISI in data transmission 数据传输中非线性ISI的实际消除
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600873
W. Frank
{"title":"Practical cancellation of nonlinear ISI in data transmission","authors":"W. Frank","doi":"10.1109/ACSSC.1996.600873","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600873","url":null,"abstract":"Nonlinear intersymbol interference (ISI) often arise in voice-band communication channels at high transmission rates or in satellite channels due to nonlinearities in the power amplifiers. Proposed equalizers for the compensation of these nonlinear distortions are mainly based on the Volterra series expansion, which is an elegant but very complex model. This paper presents a new decision feedback equalizer (DFE) which is composed only of linear filters and multipliers. Hence, the complexity of this still very general structure is comparable to linear filtering. Simulations show that the proposed DFE outperforms the conventional DFE and the Volterra DFE with a comparable complexity.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129309719","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
Design of linear phase paraunitary filter banks using an adaptive cascade lattice structure 采用自适应级联晶格结构的线性相位准酉滤波器组设计
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599124
H. Otsuki, T. Nagai, M. Ikehara
{"title":"Design of linear phase paraunitary filter banks using an adaptive cascade lattice structure","authors":"H. Otsuki, T. Nagai, M. Ikehara","doi":"10.1109/ACSSC.1996.599124","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599124","url":null,"abstract":"M channel filter banks, which have perfect reconstruction and linear phase properties, have been studied extensively and several design methods have been addressed in the past. However, almost all of these methods require the nonlinear programming technique which contains some problems such as computational complexity, initial value and so on. In this paper, we propose a new design method of linear phase paraunitary filter banks. In our proposed method, we use an efficient least-mean-square-based adaptive algorithm to optimize the parameter, which minimizes the cost function, instead of using the nonlinear programming technique.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127139126","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
Multiframe block motion compensated video coding for wireless channels 无线信道的多帧块运动补偿视频编码
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599085
M. Budagavi, J. Gibson
{"title":"Multiframe block motion compensated video coding for wireless channels","authors":"M. Budagavi, J. Gibson","doi":"10.1109/ACSSC.1996.599085","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599085","url":null,"abstract":"The development of robust and efficient video coders for high error rate mobile channels is a problem of current significance. Many of the recently proposed approaches make use of the block motion compensation (BMC) approach for compression. In this paper we propose a multiframe extension to BMC coding. The multiframe BMC (MF-BMC) coder makes use of the redundancy that exists across multiple frames in typical video-conferencing sequences to achieve additional compression over that obtained by using the single frame BMC (SF-BMC) approach, such as the base level H.263 codec. The advantage of the MF-BMC approach is that it is more robust to error propagation when compared to the traditional SF-BMC, as it makes use of information from multiple frames. The MF-BMC coder proposed in this paper is a multiframe extension of the base level H.263 coder and is found to be more robust than the base level H.263 coder when subjected to simulated errors commonly encountered on wireless channels.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131051456","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: 22
7|2 counters and multiplication with threshold logic 7|2个计数器和带有阈值逻辑的乘法
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600855
S. Vassiliadis, S. Cotofana
{"title":"7|2 counters and multiplication with threshold logic","authors":"S. Vassiliadis, S. Cotofana","doi":"10.1109/ACSSC.1996.600855","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600855","url":null,"abstract":"We propose new threshold logic based, 7|2 counters. In particular we show that 7|2 counters can be implemented with threshold logic gates in three levels of gates with explicit computation of the outputs. Consequently, we improve the delay by showing that 7|2 counters can be designed with two levels of gates and implicit computation of the sum. Further we investigate multiplication schemes using such counters, in combination with Kautz's (1961) networks for symmetric Boolean functions. Using a 32/spl times/32 direct multiplication scheme based on 7|2 implicit output computation counters and the Kautz's networks we show that our scheme outperforms in terms of area requirements known proposals for multiplications using threshold logic.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126950994","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: 7
On fault-tolerant polynomial residue number systems 关于容错多项式剩余数系统
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600858
H. Garg, F. Mendis
{"title":"On fault-tolerant polynomial residue number systems","authors":"H. Garg, F. Mendis","doi":"10.1109/ACSSC.1996.600858","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600858","url":null,"abstract":"Fault-tolerant convolution techniques have been described for polynomials defined over the fields of complex and real numbers. Fault-tolerant convolution schemes are derived for polynomials defined over finite integer rings. A new algorithm for simultaneous single fault correction and multiple fault detection is derived that is valid for all cases.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132098599","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
Azimuth/elevation direction finding using cumulants 使用累积量进行方位/仰角测向
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600926
Tsung-Hsien Liu, J. Mendel
{"title":"Azimuth/elevation direction finding using cumulants","authors":"Tsung-Hsien Liu, J. Mendel","doi":"10.1109/ACSSC.1996.600926","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600926","url":null,"abstract":"An ESPRIT-based algorithm is proposed to estimate the azimuth and elevation angles of multiple independent sources. The algorithm uses cumulants and imposes no geometric constraint on the array. Only one third of the hardware is needed for our algorithm as compared with covariance-based 2-D ESPRIT. Our algorithm can estimate azimuth and elevation angles of M-1 sources using M sensors. Simulation results show that for several array configurations our algorithm works well.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127938365","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
Wavelet domain implementation of the estimator-correlator and weighted wavelet transforms 小波域实现了估计相关变换和加权小波变换
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599142
L. Sibul, S. T. Sidahmed, T. L. Dixon, L. G. Weiss
{"title":"Wavelet domain implementation of the estimator-correlator and weighted wavelet transforms","authors":"L. Sibul, S. T. Sidahmed, T. L. Dixon, L. G. Weiss","doi":"10.1109/ACSSC.1996.599142","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599142","url":null,"abstract":"It is well known that the estimator-correlator (EC) is a maximum likelihood detector for random signals in Gaussian noise. In this paper we derive a continuous wavelet domain EC processor for the detection of signals that have propagated over stochastic propagation and scattering channels. The derivation shows that the wavelet transforms that are used for the conditional mean estimator (CME) and for the computation of the detection statistic must be defined by using reproducing kernel Hilbert space (RKHS) inner products rather than ordinary Hilbert space inner products. This fact suggests new weighted wavelet (as well as other time-frequency and time-scale) transforms. These new transforms have many applications to optimum signal processing.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131317919","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
On the use of mapping operators in SAR and SAS 浅谈SAR和SAS中映射算子的使用
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600834
P. Gough, D. Hawkins
{"title":"On the use of mapping operators in SAR and SAS","authors":"P. Gough, D. Hawkins","doi":"10.1109/ACSSC.1996.600834","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600834","url":null,"abstract":"The process of reconstructing a two-dimensional image of the earth's surface or the sea floor from a sequence of pulse echoes collected by a synthetic aperture radar (SAR) or sonar (SAS) is well established. There are differences between radar and sonar mainly stemming from the much slower speed of sound propagation in water compared with that of electromagnetic propagation in air. Of all the strip-map algorithms in use, the wavenumber algorithm appears to be the most general to both radar and sonar as it has fewer approximations and lends itself to an efficient description using a new mathematical convention which we call mapping operators. We show how these mapping operators might be used to form SAR/SAS image reconstruction algorithms for both strip-map and spotlight synthetic aperture imaging systems.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128846368","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
Sensor alignment using the Earth-centered Earth-fixed (ECEF) coordinate system 使用以地球为中心的地球固定(ECEF)坐标系对传感器进行校准
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.600949
Y. Zhou, H. Leung, M. Blanchette
{"title":"Sensor alignment using the Earth-centered Earth-fixed (ECEF) coordinate system","authors":"Y. Zhou, H. Leung, M. Blanchette","doi":"10.1109/ACSSC.1996.600949","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.600949","url":null,"abstract":"We formulate the sensor alignment problem for multisensor data fusion in the ECEF coordinate system. Sensor measurements are mapped to the ECEF coordinate system using geodetic transformation and sensor registration errors are estimated using the least squares (LS) technique. Real life-radar data are used to evaluate the performance of the proposed technique.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"212 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122978872","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
Wavelet transforms of correlation functions of frequency hopped signals 跳频信号相关函数的小波变换
Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers Pub Date : 1996-11-03 DOI: 10.1109/ACSSC.1996.599087
N. Khalil, R. Hippenstiel
{"title":"Wavelet transforms of correlation functions of frequency hopped signals","authors":"N. Khalil, R. Hippenstiel","doi":"10.1109/ACSSC.1996.599087","DOIUrl":"https://doi.org/10.1109/ACSSC.1996.599087","url":null,"abstract":"This work uses the so called instantaneous correlation function to extract features and parameters of frequency hopped signals. Wavelet transforms allow a faster processing throughput than conventional Fourier transforms do. Wavelet analysis of the correlation surface is performed to identify the modulation and to obtain estimates of signal parameters.","PeriodicalId":270729,"journal":{"name":"Conference Record of The Thirtieth Asilomar Conference on Signals, Systems and Computers","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123018041","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: 6
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