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

1,258 篇 会议
9 篇 期刊文献

馆藏范围

1,267 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

535 篇 工学
- 400 篇 电气工程
- 289 篇 信息与通信工程
- 135 篇 计算机科学与技术...
- 75 篇 机械工程
- 66 篇 测绘科学与技术
- 47 篇 软件工程
- 25 篇 电子科学与技术（可...
- 13 篇 控制科学与工程
- 9 篇 仪器科学与技术
- 3 篇 力学（可授工学、理...
- 3 篇 光学工程
- 3 篇 生物医学工程（可授...
- 2 篇 动力工程及工程热...
- 2 篇 化学工程与技术
- 2 篇 交通运输工程
- 2 篇 航空宇航科学与技...
- 1 篇 生物工程
73 篇 理学
- 60 篇 数学
- 30 篇 统计学（可授理学、...
- 12 篇 物理学
- 5 篇 系统科学
- 4 篇 地球物理学
- 2 篇 化学
- 2 篇 生物学
42 篇 医学
- 42 篇 临床医学
- 2 篇 基础医学(可授医学...
- 2 篇 药学(可授医学、理...
2 篇 教育学
- 2 篇 教育学
2 篇 管理学
- 1 篇 管理科学与工程(可...
- 1 篇 图书情报与档案管...

主题

342 篇 array signal pro...
247 篇 signal processin...
189 篇 sensor arrays
139 篇 estimation
135 篇 signal processin...
111 篇 signal to noise ...
105 篇 conferences
92 篇 arrays
92 篇 direction-of-arr...
72 篇 vectors
71 篇 interference
69 篇 covariance matri...
65 篇 direction of arr...
61 篇 antenna arrays
50 篇 covariance matri...
50 篇 radar
48 篇 wireless sensor ...
47 篇 robustness
46 篇 simulation
45 篇 sensors

机构

11 篇 department of el...
10 篇 temple univ dept...
7 篇 xidian univ natl...
6 篇 school of inform...
6 篇 school of inform...
6 篇 mit lincoln labo...
5 篇 tech univ darmst...
5 篇 communication sy...
5 篇 mit lincoln lab ...
5 篇 center for advan...
5 篇 national laborat...
5 篇 communications r...
4 篇 univ alabama dep...
4 篇 natl univ def te...
4 篇 school of electr...
4 篇 university of el...
4 篇 college of infor...
4 篇 school of electr...
4 篇 mit lincoln lab ...
4 篇 city univ hong k...

作者

13 篇 marius pesavento
12 篇 yimin d. zhang
11 篇 zhang yimin d.
10 篇 wei liu
9 篇 liu wei
8 篇 bin liao
7 篇 visa koivunen
7 篇 martin haardt
7 篇 a.b. gershman
7 篇 lei huang
7 篇 guisheng liao
6 篇 nehorai arye
6 篇 pesavento marius
6 篇 piya pal
6 篇 liao guisheng
5 篇 walter kellerman...
5 篇 qiang li
5 篇 p. p. vaidyanath...
5 篇 koivunen visa
5 篇 abdelhak m. zoub...

语言

1,267 篇 英文

检索条件"任意字段=2008 IEEE Sensor Array and Multichannel Signal Processing Workshop"

共 1267 条记录，以下是731-740 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：

Hierarchical particle filtering for target tracking in multi-modal sensor networks

Hierarchical particle filtering for target tracking in multi...

引用

sensor array and multichannel signal processing workshop

作者： Phani Chavali Arye Nehorai Preston M. Green Department of Electrical and Systems Engineering Washington University in St. Louis Saint Louis MO USA

We propose a filtering method, called hierarchical particle filtering, for multi-modal sensor networks in which the unknown state vector is observed, through the measurements, in a hierarchical fashion. We partition the state space and the measurement space into lower dimensional subspaces. At each stage, we find an estimate of one partition using the measurements from the corresponding partition, and the information from the previous stages. We use hierarchical particle filtering for joint initiation, termination and tracking of multiple targets using multi-modal measurements. Numerical simulations demonstrate that the proposed filtering method accurately identifies the number and the categories of targets, and produces a lower mean-squared error (MSE) compared to the MSE obtained using a standard particle filter.

关键词： Target tracking Vectors Atmospheric measurements Particle measurements Cameras Multimodal sensors Standards

来源：评论

学校读者我要写书评

暂无评论

Quantifying the advantages of joint processing in TDOA estimation

Quantifying the advantages of joint processing in TDOA estim...

引用

sensor array and multichannel signal processing workshop

作者： Arie Yeredor School of Electrical Engineering Tel Aviv University Tel-Aviv Israel

We address the problem of passive estimation of the Time-Difference of Arrival (TDOA) of an unknown, stochastic signal, at two sensors. The key question addressed here is whether additional sensors, receiving the same signal at various relative delays, can serve to improve the accuracy in estimating the TDOA of interest between the first two sensors (without exploiting any underlying parameterization, such as dependence on the transmitter's location). We derive the Cramér-Rao Lower Bound (CRLB) on the resulting joint estimation error in a model which possibly includes multipath reflections. We show analytically, that in a multipath-free scenario, at high to moderate signal to Noise Ratios, additional sensors do not offer any improvement in accuracy. However, we also demonstrate (numerically) that in the presence of multipath reflections (possibly received at all sensors), the additional sensors can indeed assist in estimating the TDOA of interest with improved accuracy.

关键词： Delay signal to noise ratio Accuracy Vectors Estimation error

来源：评论

学校读者我要写书评

暂无评论

Low-overhead cooperative beamforming under imperfect quantized SNR of source-to-relay links

Low-overhead cooperative beamforming under imperfect quantiz...

引用

sensor array and multichannel signal processing workshop

作者： Jwo-Yuh Wu Chung-Hsuan Hu Tsang-Yi Wang Department of Electrical Engineering National Chiao Tung University Hsinchu Taiwan Institute of Communications Engineering National Sun Yat-sen University Kaohsiung Taiwan

ISBN: (纸本)9781467310703

We consider a cooperative beamforming system with the amplify-and-forward protocol. To reduce the signaling overhead, each relay quantizes the SNR of the source-to-relay (S-R) link into one bit, which is then transmitted through a binary symmetric channel (BSC) with a known crossover probability to the destination. Given the set of the error-corrupted one-bit messages received at the destination, the beamforming design criterion is the maximization of the expected receive SNR, averaged over the conditional bit-flipping distributions of BSCs. We derive an analytic expression for the considered SNR metric, which is a complicated function of the beamforming weights. To facilitate analysis, we further derive a tractable lower bound for the conditional average SNR. By conducting maximization with respect to this lower bound, a closed-form sub-optimal beamformer can be obtained as a solution to a generalized eigenvalue problem. Computer simulations are used to illustrate the performance of the proposed scheme.

关键词： signal to noise ratio array signal processing Relays Wireless sensor networks Protocols Measurement Computer simulation

来源：评论

学校读者我要写书评

暂无评论

Effective rate analysis of MISO Rician fading channels

Effective rate analysis of MISO Rician fading channels

引用

sensor array and multichannel signal processing workshop

作者： Michail Matthaiou George C. Alexandropoulos Hien Quoc Ngo Erik G. Larsson Department of Signals and Systems Chalmers University of Technology Gothenburg Sweden Broadband Wireless and Sensor Networks Group Athens Information Technology Center Athens Greece Department of Electrical Engineering Linköping University Linkoping Sweden

The delay constraints imposed by future wireless applications require a suitable metric for assessing their impact on the overall system performance. Since the classical Shannon's ergodic capacity fails to do so, the so-called effective rate was recently established as a rigorous alternative. Yet, most prior relevant works have considered only the typical case of Rayleigh fading which allows for tractable manipulations. In this paper, we relax this assumption by considering the more general Rician fading model for multiple-input single-output (MISO) systems. A new, analytical expression for the exact effective rate is derived, along with tractable expressions for the key parameters dictating the effective rate performance in the high and low signal-to-noise (SNR) regimes.

关键词： Rician channels Delay signal to noise ratio Quality of service Wideband Rayleigh channels

来源：评论

学校读者我要写书评

暂无评论

Dictionary based reconstruction and classification of randomly sampled sensor network data

Dictionary based reconstruction and classification of random...

引用

sensor array and multichannel signal processing workshop

作者： Grigorios Tsagkatakis Panagiotis Tsakalides Institute of Computer Science (ICS) Foundation for Research and Technology Hellas Crete Greece Department of Computer Science University of Crete Heraklion Crete Greece

In this paper, we propose a method for recovering and classifying WSN data while minimizing the number of samples that need to be acquired, processed, and transmitted. The problem is formulated according to the recently proposed framework of Matrix Completion (MC), which asserts that a low rank matrix can be recovered from a small number of randomly sampled entries. The application of MC in WSN data is motivated by the assumption that sensory data exhibit intra-sensor correlations and that these data can be represented using known examples. We formulate the problem as that of recovering the low rank measurement matrix by encoding the contributions of known examples, the dictionary elements, for reconstructing and classifying the data. Experimental results using artificial data suggest that the proposed scheme is able to accurately reconstruct and classify the sensory data from a small number of measurements.

关键词： Wireless sensor networks Dictionaries Correlation Noise Accuracy Minimization Noise measurement

来源：评论

学校读者我要写书评

暂无评论

Thwarting traffic analysis: A signal processing perspective

Thwarting traffic analysis: A signal processing perspective

引用

sensor array and multichannel signal processing workshop

作者： Abhishek Mishra Parv Venkitasubramaniam ECE Department Lehigh University USA

Traffic analysis, where eavesdroppers retrieve networking information such as source-destination pairs and paths of data flow, severely compromises user privacy and can equip an adversary to launch more powerful network attacks. Anonymous communication, where users exchange information without revealing the communicating parties is essential in any data network. Chaum Mixing, where relay nodes or proxy servers use cryptographic and batching strategies to mask source identities, is a well technique to provide anonymous communication on the Internet. The mathematical analysis of Chaum mixes and the design of mixing strategies have utilized an information theoretic measure of anonymity based on Shannon entropy. In this work, a statistical signal processing framework is proposed to study optimal mixing strategies and the achievable anonymity. Using the detection time of an adversary as a metric, the maximum achievable anonymity of a mix is characterized as a function of its available memory and the allowed rate of dummy transmissions. It is shown that, in the absence of dummy transmissions, the maximum allowable time for anonymous transmission increases quadratically with the buffer size, and for a fixed buffer size, the system approaches perfect unobservability at a rate inversely proportional to the rate of dummy transmissions.

关键词： Conferences Privacy Delay signal processing Internet

来源：评论

学校读者我要写书评

暂无评论

Rank-two beamforming for single-group multicasting networks using OSTBC

Rank-two beamforming for single-group multicasting networks ...

引用

sensor array and multichannel signal processing workshop

作者： Xin Wen Ka L. Law Samer J. Alabed Marius Pesavento Darmstadt University of Technology Darmstadt Germany

This paper addresses the problem of transmit beamforming for single-group multicasting, where common information is transmitted to a group of users. Beamformers are designed to minimize the total transmitted power subject to quality-of-service (QoS) constraints for all users. In the conventional approach, a single weight vector is computed to jointly satisfy all requirements. However, in the case of a large number of users, the performance of the conventional beamforming methods usually degrades severely due to the limited degrees of freedom for designing spatially selective beamformers. Motivated by this, we propose a novel approach with increased flexibility in which the idea of single-group beamforming is combined with orthogonal space-time block coding (OSTBC). The proposed approach is particularly attractive in combination with the semi-definite relaxation (SDR) technique for which our approach is optimal in the case of rank-one and rank-two SDR solutions whereas the conventional approach is only optimal for rank-one solutions.

关键词： Vectors array signal processing Multicast communication Approximation methods Quality of service Receivers signal to noise ratio

来源：评论

学校读者我要写书评

暂无评论

Expected likelihood approach for covariance matrix estimation: Complex angular central Gaussian case

Expected likelihood approach for covariance matrix estimatio...

引用

sensor array and multichannel signal processing workshop

作者： Yuri I. Abramovich Ben A. Johnson WR Systems VA Lockheed Martin IS&GS Littleton

We consider the problem of covariance matrix estimation for strongly non-homogeneous data (clutter), modelled as spherically invariant complex random vectors. When normalized, such data are described by a complex angular Gaussian distribution. For a number of independent identically distributed (i.i.d.) samples with this distribution, we introduce the likelihood ratio and demonstrate that for the true covariance matrix, this LR has a p.d.f. which does not depend on the true matrix itself, but rather just its dimension and sample support. This “scenario-invariance” is used to select regularizing parameters that reduce the LR of the MLE estimate to a level statistically equal to the likelihood of the true covariance matrix. We apply this approach to select the loading factor in fixed point loaded covariance matrix estimates, and the order in the fixed point time-varying auto regressive (TVAR) covariance matrix estimate.

关键词： Covariance matrix Maximum likelihood estimation Vectors signal processing Data models Loading

来源：评论

学校读者我要写书评

暂无评论

Decentralized data processing and management in Smart Grid via gossiping

Decentralized data processing and management in Smart Grid v...

引用

sensor array and multichannel signal processing workshop

作者： Xiao Li Zhifang Wang Anna Scaglione Dept. of Electrical and Computer Engineering University of California Davis CA USA

In this paper, we propose a model for a peer-to-peer database system architecture where each server is aware of the power system state vector, and that can provide a scalable architecture for the Smart Grid. The key new component is a decentralized gossip-based state estimation (G-SE) algorithm included as a stored database procedure, which constantly updates via network diffusion, the global state information vector in each server of the distributed database system (DDBS). In addition to provide global situation awareness, state aware DDBS can attain communication and storage efficiency first, by using the temporal and spatial correlation of the state to compress it and, second, by storing the state as side information to store measurement residuals. Thanks to the G-SE primitive DDBS are more resilient to network attaks, can reduce network usage and streamline query processing for Smart Grid applications.

关键词： State estimation Smart grids Database systems Servers Vectors

来源：评论

学校读者我要写书评

暂无评论

On the consistency of likelihood penalization methods in large sensor networks

On the consistency of likelihood penalization methods in lar...

引用

sensor array and multichannel signal processing workshop

作者： Pascal Vallet Philippe Loubaton Xavier Mestre Laboratoire dinformatique Gaspard Monge Marne-la-Vallee France Centre Tecnològic de Telecomunicacions de Catalunya Castelldefels Barcelona Spain

This paper is devoted to the problem of source detection with large sensor networks, in a context where the number of available samples N and the number of antennas M are of the same order of magnitude. We focus here on the popular likelihood penalization (LP) methods, such as Minimum Description Length (MDL) or Akaike Information Criterion (AIC). Such methods have been widely studied in the context where N >;>; M, and in particular the consistency of the MDL and the inconsistency of the AIC estimator were established in the asymptotic regime where N → ∞ while M remains constant. We propose here an analysis in the asymptotic regime where M;N both converge to ∞ at the same rate, and using results from random matrix theory, we establish conditions on the penalty term to ensure consistency of LP methods in this latter regime. As a consequence, we deduce that the MDL method is always inconsistent while the AIC method can be consistent in certain situations.

关键词： Manganese

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127页 << < 70 71 72 73 74 75 76 77 78 79 > >>

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：