检索结果-内蒙古大学图书馆

您好，读者！请登录

内蒙古大学图书馆

首页
概况
党建
资源
服务
科研支持
- 论文收录引用证明
- 科技查新
知识产权
档案馆
帮助

咨询与建议

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

您的常用邮箱：*

您的手机号码：*

问题描述：

当前已输入0个字，您还可以输入200个字

全部搜索
期刊论文
图书
学位论文
标准
纸本馆藏
外文资源发现
数据库导航
超星发现

高级检索

时间限定

出版年份：

文献类型

图书期刊文献学位论文多媒体

馆藏选择

电子馆藏纸本馆藏

核心期刊

全部期刊 SCI 收录期刊 SSCI 收录期刊 EI 收录期刊 CSCD 收录期刊 CSSCI 收录期刊

语言

中文英文

文献类型

期刊文献图书学位论文标准纸本馆藏

帮助

文字说明：

T=题名（书名、题名），A=作者（责任者），K=主题词，P=出版物名称，PU=出版社名称，O=机构（作者单位、学位授予单位、专利申请人），L=中图分类号，C=学科分类号，U=全部字段，Y=年（出版发行年、学位年度、标准发布年）

检索规则说明：

AND代表“并且”；OR代表“或者”；NOT代表“不包含”；(注意必须大写,运算符两边需空一格)

检索范例：

范例一：(K=图书馆学 OR K=情报学) AND A=范并思 AND Y=1982-2016
范例二：P=计算机应用与软件 AND (U=C++ OR U=Basic) NOT K=Visual AND Y=2011-2016

分类表

所选分类

>> <<

限定检索结果

文献类型

391 篇 会议
16 篇 期刊文献
8 册 图书
4 篇 学位论文

馆藏范围

419 篇 电子文献
1 种 纸本馆藏

日期分布

学科分类号

366 篇 工学
- 192 篇 电气工程
- 148 篇 计算机科学与技术...
- 147 篇 信息与通信工程
- 93 篇 软件工程
- 55 篇 电子科学与技术（可...
- 28 篇 仪器科学与技术
- 28 篇 控制科学与工程
- 13 篇 光学工程
- 9 篇 材料科学与工程（可...
- 8 篇 测绘科学与技术
- 4 篇 生物医学工程（可授...
- 3 篇 机械工程
- 3 篇 航空宇航科学与技...
- 2 篇 力学（可授工学、理...
- 2 篇 化学工程与技术
- 1 篇 建筑学
- 1 篇 土木工程
- 1 篇 交通运输工程
- 1 篇 船舶与海洋工程
- 1 篇 生物工程
270 篇 理学
- 178 篇 数学
- 128 篇 物理学
- 46 篇 统计学（可授理学、...
- 2 篇 化学
- 2 篇 生物学
- 2 篇 系统科学
- 1 篇 地球物理学
59 篇 医学
- 58 篇 临床医学
- 3 篇 基础医学(可授医学...
3 篇 管理学
- 3 篇 管理科学与工程(可...

主题

171 篇 signal processin...
42 篇 time-frequency a...
36 篇 fourier transfor...
35 篇 signal to noise ...
34 篇 digital signal p...
31 篇 image processing
28 篇 interference (co...
26 篇 sensors
25 篇 signal detection
23 篇 algorithm develo...
22 篇 matrices
21 篇 statistical anal...
20 篇 array processing
18 篇 signal analyzers
16 篇 radar
16 篇 electronic filte...
15 篇 data modeling
14 篇 frequency modula...
14 篇 very large scale...
14 篇 digital filterin...

机构

7 篇 cuny ny 10021 us...
7 篇 univ. of califor...
5 篇 us dept def ft g...
5 篇 queensland univ....
5 篇 mcmaster univ.
4 篇 univ. of souther...
4 篇 univ windsor vls...
4 篇 univ pittsburgh ...
4 篇 univ of michigan...
4 篇 michigan state u...
3 篇 villanova univ c...
3 篇 iowa state univ.
3 篇 univ. of minneso...
3 篇 univ calif los a...
3 篇 rutgers univ.
3 篇 univ. of michiga...
3 篇 drexel univ dept...
2 篇 the pennsylvania...
2 篇 univ. of illinoi...
2 篇 univ of washingt...

作者

13 篇 cohen l
7 篇 williams wj
7 篇 yao k
6 篇 franklin t luk
5 篇 williams william...
5 篇 nelson dj
5 篇 amin mg
5 篇 chau pm
5 篇 cohen leon
5 篇 boashash b
5 篇 parhi kk
5 篇 jullien ga
4 篇 amin moeness g.
4 篇 lorenzelli f
4 篇 luk franklin t.
4 篇 loughlin p
4 篇 qiao sz
3 篇 white langford b...
3 篇 shroff gautam m.
3 篇 nickel robert m.

语言

415 篇 英文
3 篇 其他
1 篇 中文

检索条件"任意字段=Advanced Signal Processing Algorithms, Architectures, and Implementations XV"

共 419 条记录，以下是391-400 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

High-performance FFT implementation on the BOPS ManArray parallel DSP

High-performance FFT implementation on the BOPS ManArray par...

引用

Proceedings of the 1999 advanced signal processing algorithms, architectures, and implementations IX

作者： Pitsianis, Nikos P. Pechanek, Gerald BOPS Inc Chapel Hill United States

We present a high performance implementation of the FFT algorithm on the BOPS ManArray parallel DSP processor. The ManArray we consider for this application consists of an array controller and 2 to 4 fully interconnected processing elements. To expose the parallelism inherent to an FFT algorithm we use a factorization of the DFT matrix in Kronecker products, permutation and diagonal matrices. Our implementation utilizes the multiple levels of parallelism that are available on the ManArray. We use the special multiply complex instruction, that calculates the product of two complex 32-bit fixed point numbers in 2 cycles (pipelinable). Instruction level parallelism is exploited via the indirect Very Long Instruction Word (iVLIW). With an iVLIW, in the same cycle a complex number is read from memory, another complex number is written to memory, a complex multiplication starts and another finishes, two complex additions or subtractions are done and a complex number is exchanged with another processing element. Multiple local FFTs are executed in Single Instruction Multiple Data (SIMD) mode, and to avoid a costly data transposition we execute distributed FFTs in Synchronous Multiple Instructions Multiple Data (SMIMD) mode.

关键词： Parallel processing systems

来源：评论

学校读者我要写书评

暂无评论

Kernel synthesis for generalized time-frequency distributions using the method of projections onto convex sets

Kernel synthesis for generalized time-frequency distribution...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Oh, Seho Marks II, R.J. Atlas, L.E. Pitton, J.W. Univ of Washington Seattle United States

The kernel in Cohen's generalized time-frequency representation (GTFR) requires is chosen in accordance to certain desired performance attributes. Properties of the kernel are typically expressed as constraints. We establish that many commonly used constraints are convex in the sense that all allowable kernels satisfying a given constraint form a convex set. Thus, for a given set of constraints, the kernel can be designed by alternately projecting among these sets. If there exists a nonempty intersection among the constraint sets, then the theory of projection onto convex sets (POCS) guarantees convergence to a point in the intersection. If the constraints can be partitioned into two sets, each with a nonempty intersection, the POCS guarantees convergence to a kernel that satisfies the inconsistent constraints with minimum mean square error.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Transient detection in the presence of strong narrow band interference via Wigner-Ville spectrum

Transient detection in the presence of strong narrow band in...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Marinovich, Nenad M. Roytman, Leonid M. City Univ of New York New York United States

We consider the problem of detecting a known Gaussian random transient in the presence of a strong, known, random, Gaussian, narrowband interference. This can be regarded as a special case of the classical problem of detecting a known Gaussian random signal in known Gaussian colored noise. There exists a standard solution for such a problem, based on the classical optimum detector for random signals in noise. However, such a detector does not explicitly use the non-stationary character of the signal as a priori available information. Reformulation of the optimum detection in the time-frequency plane allows one to exploit this distinguishing signal feature and suppress the stationary interference and noise. This is accomplished here by use of the Wigner-Ville signal representation and an optimum signal/noise subspace decomposition that maximizes the transient signal to noise ratio. The new detection procedure eliminates the subspace where major part of the energy of random noise sample will fall while retaining almost all of the signal energy. In this fashion, a gain in the output signal to noise ratio is achieved as verified by simulations.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Instantaneous frequency and kernel requirements for discrete time-frequency distributions

Instantaneous frequency and kernel requirements for discrete...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Jeong, Jechang Cunningham, Gregory S. Williams, William J. Univ of Michigan Ann Arbor United States

In this paper, we introduce a new definition for the instantaneous frequency of a discrete-time analytic signal. Unlike the existing definition which uses only two data samples around a particular time, this method utilizes all the data samples for estimating the instantaneous frequency. We prove that this quantity is identical to the average frequency evaluated at the particular time in the discrete-time TFD. This property is consistent with the analogous continuous-time property. We also derive requirements on the discrete-time kernel needed to satisfy this property. Using computer-generated signals and real data, performance comparisons are made between the proposed approach and the existing one.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Translation, rotation and scaling invariant object and texture classification using polyspectra

Translation, rotation and scaling invariant object and textu...

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Tsatsanis, Michail K. Giannakis, Georgios B. Univ of Virgina Charlottesville United States

The problem addressed in this paper is the detection and classification of deterministic objects and random textures in a noisy scene. An energy detector is developed in the cumulant domain, by exploiting the noise insensitivity of higher-order statistics. An efficient implementation of this detector is described, using matched filtering. Its performance is analyzed using asymptotic distributions in a binary hypothesis testing framework. Object and texture classifiers are derived using higher-order statistics. They are minimum distance classifiers in the cumulant domain, and can be efficiently implemented using a bank of matched filters. Further, they are robust to additive Gaussian noise and insensitive to object shifts. Extensions, which can handle object rotation and scaling are also discussed. An alternate texture classifier is derived from a ML viewpoint, that is more efficient at the expense of complexity. The application of these algorithms to texture modeling is shown and consistent parameter estimators are obtained. Simulations are shown for both the object and the texture classification problems.

关键词： Image processing

来源：评论

学校读者我要写书评

暂无评论

Time-varying higher order spectra

Time-varying higher order spectra

引用

advanced signal processing algorithms, architectures, and implementations II

作者： Boashash, Boualem O'Shea, Peter Queensland Univ. of Technology Brisbane Queensland Australia

ISBN: (纸本)0819406945

A general solution for the problem of time-frequency signal representation of nonlinear FM signals is provided, based on a generalization of the Wigner-Ville distribution. The Wigner-Ville distribution (WVD) is a second order time-frequency representation. That is, it is able to give ideal energy concentration for quadratic phase signals and its ensemble average is a second order time-varying spectrum. The same holds for Cohen's class of time-frequency distributions, which are smoothed versions of the WVD. The WVD may be extended so as to achieve ideal energy concentration for higher order phase laws, and such that the expectation is a time-varying higher order spectrum. The usefulness of these generalized Wigner-Ville distributions (GWVD) is twofold. Firstly, because they achieve ideal energy concentration for polynomial phase signals, they may be used for optimal instantaneous frequency estimation. Second, they are useful for discriminating between nonstationary processes of differing higher order moments. In the same way that the WVD is generalized, we generalize Cohen's class of TFDs by defining a class of generalized time-frequency distributions (GTFDs) obtained by a two dimensional smoothing of the GWVD. Another results derived from this approach is a method based on higher order spectra which allows the separation of cross-terms and auto- terms in the WVD.

关键词： signal Theory

来源：评论

学校读者我要写书评

暂无评论

Minimum-phase LU factorization preconditioner for Toeplitz matrices

Minimum-phase LU factorization preconditioner for Toeplitz m...

引用

advanced signal processing algorithms, architectures, and implementations II

作者： Ku, Ta-Kang Kuo, C.-C.J. Univ. of Southern California Los Angeles CA USA

ISBN: (纸本)0819406945

A new preconditioner is proposed for the solution of an N × N Toeplitz system TNx = b, where TN can be symmetric indefinite or nonsymmetric, by preconditioned iterative methods. The preconditioner FN is obtained based on factorizing the generating function T(z) into the product of two terms corresponding, respectively, to minimum-phase causal and anticausal systems and therefore called the minimum-phase LU (MPLU) factorization preconditioner. Due to the minimum-phase property, F N-1 is bounded. For rational Toeplitz TN with generating function T(z) = A(z-1)/B(z-1) + C(z)/D(z), where A(z), B(z), C(z), and D(z) are polynomials of orders p1, q1, p2, and q2, we show that the eigenvalues of FN-1TN are repeated exactly at 1 except at most α F outliers, where αF depends on p1, q1, p2, q2, and the number approximately ega of the roots of T(z) = A(z-1)D(z) + B(z-1)C(z) outside the unit circle. A preconditioner KN in circulant form generalized from the symmetric case is also presented for comparison.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Adaptive Lanczos methods for recursive condition estimation

Adaptive Lanczos methods for recursive condition estimation

引用

advanced signal-processing algorithms, architectures, and implementations

作者： Ferng, William R. Golub, Gene H. Plemmons, Robert J. NC State Univ Raleigh United States

Estimates for the condition number of a matrix are useful in many areas of scientific computing, including: recursive least squares computations, optimization, eigenanalysis, and general nonlinear problems solved by linearization techniques where matrix modification techniques are used. The purpose of this paper is to propose an adaptive Lanczos estimator scheme, which we call ale, for tracking the condition number of the modified matrix over time. Applications to recursive least squares (RLS) computations using the covariance method with sliding data windows are considered. ale is fast for relatively small n - parameter problems arising in RLS methods in control and signal processing, and is adaptive over time, i.e., estimates at time t are used to produce estimates at time t + 1. Comparisons are made with other adaptive and non-adaptive condition estimators for recursive least squares problems. Numerical experiments are reported indicating that ale yields a very accurate recursive condition estimator.

关键词： signal processing

来源：评论

学校读者我要写书评

暂无评论

Redundant finite rings for fault-tolerant signal processors

Redundant finite rings for fault-tolerant signal processors

引用

advanced signal processing: algorithms, architectures, and implementations V

作者： Jullien, Graham A. Bizzan, S.S. Wigley, N.M. Miller, W.C. Univ. of Windsor Windsor ON Can

ISBN: (纸本)0819416207

Redundant Residue Number Systems (RRNS) have been proposed as suitable candidates for fault tolerance in compute intensive applications. The redundancy is based on multiple projections to moduli sub-sets and conducting a search for results that lie in a so-called illegitimate range. This paper presents RRNS fault tolerant procedures for a recently introduced finite polynomial ring mapping procedure (modulus replication RNS). The mapping technique dispenses with the need for many relatively prime ring moduli, which is a major draw-back with conventional RRNS systems. Although double, triple, and quadrupole modular redundancy can be implemented in the polynomial mapping structure, polynomial coefficient circuitry, or the independent direct product ring computational channels, for error detection and/or correction, this paper discusses the implementation of redundant rings which are generated by (1) redundant residues, (2) spare general computational channels, or (3) a combination of the two. The first architecture is suitable for RNS embedding in the MRRNS, and the second for single moduli mappings. The combination architecture allows a trade-off between the two extremes. The application area is in fault tolerant compute intensive DSP arrays.

关键词： Fault tolerant computer systems

来源：评论

学校读者我要写书评

暂无评论

Application of algorithm-based fault tolerance to high-level synthesis of signal flow graphs

Application of algorithm-based fault tolerance to high-level...

引用

advanced signal processing: algorithms, architectures, and implementations V

作者： Karnik, Tanay Ramaswamy, Shankar Kang, Steve M. Banerjee, Prithviraj Univ. of Illinois/Urbana-Champaign Urbana IL USA

ISBN: (纸本)0819416207

Algorithm based fault tolerance techniques have been used for systolic processors and general purpose multiprocessors. In this paper, we have applied an algorithm based fault tolerance technique to high-level synthesis of signal flow graphs. The technique incorporates reliability into synthesized DSP filters. Given a signal Flow Graph representation for these filters, our schemes synthesize a reliable schedule for the operations in them and allocate functional units to the operations subject to hardware and reliability constraints. We impose reliability constraints to avoid compensating errors in fault detection. Our first scheme uses the well known duplicate and compare approach, while the second uses a novel linearity based checking approach used in algorithm based fault tolerance methods for matrix computations. The schemes have been implemented and results obtained by using them on sample signal flow graphs are presented. These results show the linearity based scheme to have a low time overhead. For example, this scheme takes about 10% extra time for the reliable synthesis of a 10th order IIR filter. Our proposed work extends previous work in the area in three directions: (1) use of linearity based checks, over duplication based checks, (2) handling cyclic flow graphs, over previous proposals for acyclic graphs, and (3) reliability constrained hardware mapping. Extensions of the schemes to nonlinear flow graphs is also proposed.

关键词： Fault tolerant computer systems

来源：评论

学校读者我要写书评

暂无评论

没有更多数据了...

全选清除本页清除全部题录导出标记到“检索档案”

共42页 << < 33 34 35 36 37 38 39 40 41 42 > >>

检索报告对象比较合并检索0

隐藏清空

合并搜索

回到顶部

执行限定条件

内容：

评分：

请选择保存的检索档案：

请选择收藏分类：

订阅名称：

通借通还

温馨提示：

图书名称：

借书校区：

取书校区：

手机号码：

邮箱地址：

一卡通帐号：

电话和邮箱必须正确填写，我们会与您联系确认。

联系人：

所在院系：

联系邮箱：

联系电话：

内蒙古自治区呼和浩特市赛罕区大学西街235号邮编: 010021

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：