Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136)最新文献

A comparative study of multiple accessing schemes 多址方案的比较研究

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-20 DOI: 10.1109/ACSSC.1997.680518

E. Erkip, B. Aazhang

引用次数: 11

On the use of basis functions in blind equalization based on deterministic least squares 基于确定性最小二乘的盲均衡中基函数的应用

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.680557

M. Zoltowski, Der-Feng Tseng, T. Thomas

{"title":"On the use of basis functions in blind equalization based on deterministic least squares","authors":"M. Zoltowski, Der-Feng Tseng, T. Thomas","doi":"10.1109/ACSSC.1997.680557","DOIUrl":"https://doi.org/10.1109/ACSSC.1997.680557","url":null,"abstract":"A blind channel identification scheme for narrowband digital communications with linear modulation is proposed that relies solely on the respective outputs of at least two spatially separated antennas. The proposed method is based on a deterministic relationship between the respective outputs of two FIR filters fed by the same input signal observed by Xu, Liu, Tong, and Kailath (see IEEE Trans. on Signal Processing, p.2982-93, 1995). It also relies on the use of basis functions derived from the Nyquist symbol waveform to characterize each channel's respective impulse response as first proposed by Schell and Smith (see IEEE Milcom-94, p.128-32, 1994). For urban cellular scenarios where the delay spread is on the order of T/sub 0/, where 1/T/sub 0/ is the symbol rate, we show that the continuous-time channel for a given antenna may be well approximated by a linear combination of a small number of time-shifted versions of the Nyquist symbol waveform. The corresponding time shifts may be equi-spaced across the delay spread regardless of the number of actual multipaths and their respective times of arrival. This leads to a critical observation that for a given antenna the same basis coefficient values characterize both the \"real\" discrete-time channel realized by symbol-spaced sampling starting at t=0 and the virtual discrete-time channel realized by symbol-spaced sampling starting at t=(T/sub 0/)/2. This, in turn, leads to a channel identification scheme requiring two samples per symbol at each antenna that blindly identifies each channel with a relatively small number of symbols in a moderate SNR scenario. A further result is that a bank of small order FIR equalizing filters spanning roughly the delay spread may be computed directly from the basis function coefficient values for each antenna.","PeriodicalId":240431,"journal":{"name":"Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121133079","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: 15

Wavelet quantization of noisy speech using constrained Wiener filtering 基于约束维纳滤波的含噪语音小波量化

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.680025

A. Madhukumar, A. Premkumar, H. Abut

引用次数: 2

Hidden Markov modeling for automatic target recognition 自动目标识别的隐马尔可夫建模

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.680565

D. Kottke, Jong-Kae Fwu, K. Brown

引用次数: 12

Linear parameterization of orthogonal wavelets 正交小波的线性参数化

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.679104

W. Lu

引用次数: 3

Effective coding for fast redundant adders using the radix-2 digit set {0,1,2,3} 使用基数-2位数集{0,1,2,3}的快速冗余加法器的有效编码

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.679087

M. Ercegovac, T. Lang

引用次数: 9

A canonical representation for distributions of adaptive matched subspace detectors 自适应匹配子空间检测器分布的规范表示

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.679120

S. Kraut, L. T. McWhorter, L. Scharf

引用次数: 20

Two decades of statistical array processing 二十年的统计阵列处理

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.680549

M. Viberg, H. Krim

引用次数: 9

Sequential design of FIR digital filters for low-power DSP applications 用于低功耗DSP应用的FIR数字滤波器序列设计

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.680535

W. Lu, A. Antoniou, S. Saab

{"title":"Sequential design of FIR digital filters for low-power DSP applications","authors":"W. Lu, A. Antoniou, S. Saab","doi":"10.1109/ACSSC.1997.680535","DOIUrl":"https://doi.org/10.1109/ACSSC.1997.680535","url":null,"abstract":"A method for the design of FIR digital filters with low power consumption is proposed. In this method, the digital filter is implemented as a cascade arrangement of low-order sections. The first section is designed through optimization so as to satisfy as far as possible, the overall required specifications. The first section is then fixed and a second section is added, which is designed so that the first two sections in cascade satisfy again as far as possible the overall required specifications. This process is repeated until a multisection filter is obtained that would satisfy the required specifications under the most critical circumstances imposed by the application at hand. In multisection filters of this type, the minimum number of sections required to process the current input signal can be switched in through the use of a simple adaptation mechanism and, in this way, the power consumption can be minimized. This design strategy is achieved by formulating the design of the k-th section as a weighted least-squares minimization problem, assuming that an optimum (k-1)-section design is available.","PeriodicalId":240431,"journal":{"name":"Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1997-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121207405","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

Controlling spectral dynamics in LPC quantization for perceptual enhancement 用于感知增强的LPC量化中的频谱动力学控制

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136) Pub Date : 1997-11-02 DOI: 10.1109/ACSSC.1997.679069

J. Samuelsson, J. Skoglund, J. Linden

引用次数: 6