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

229 篇 会议
9 篇 期刊文献

馆藏范围

238 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

133 篇 工学
- 77 篇 信息与通信工程
- 41 篇 电子科学与技术（可...
- 35 篇 计算机科学与技术...
- 32 篇 软件工程
- 18 篇 仪器科学与技术
- 17 篇 机械工程
- 14 篇 控制科学与工程
- 14 篇 交通运输工程
- 10 篇 电气工程
- 6 篇 航空宇航科学与技...
- 3 篇 光学工程
- 3 篇 动力工程及工程热...
- 3 篇 土木工程
- 3 篇 生物医学工程（可授...
- 3 篇 生物工程
- 2 篇 建筑学
- 2 篇 化学工程与技术
- 1 篇 材料科学与工程（可...
53 篇 理学
- 39 篇 数学
- 23 篇 统计学（可授理学、...
- 12 篇 系统科学
- 8 篇 物理学
- 3 篇 生物学
- 2 篇 化学
6 篇 管理学
- 4 篇 管理科学与工程(可...
- 2 篇 工商管理
- 2 篇 图书情报与档案管...
3 篇 军事学
- 2 篇 军队指挥学
1 篇 法学
- 1 篇 社会学
1 篇 文学
- 1 篇 新闻传播学
1 篇 医学

主题

38 篇 mimo
34 篇 signal processin...
31 篇 image processing
17 篇 signal to noise ...
17 篇 digital communic...
15 篇 fading
13 篇 wireless communi...
13 篇 decoding
12 篇 cognitive radio
11 篇 transmitting ant...
11 篇 bit error rate
11 篇 interference
10 篇 ofdm
9 篇 receivers
9 篇 correlation
9 篇 energy efficienc...
8 篇 throughput
8 篇 orthogonal frequ...
8 篇 communications s...
8 篇 receiving antenn...

机构

18 篇 joint research i...
17 篇 school of inform...
13 篇 joint research i...
10 篇 institute for di...
9 篇 institute of dig...
7 篇 joint research i...
7 篇 college of infor...
7 篇 joint research i...
6 篇 joint research i...
6 篇 joint research i...
5 篇 institute for di...
5 篇 institute for di...
4 篇 institute of dig...
4 篇 joint research i...
4 篇 school of engine...
4 篇 institute for di...
4 篇 department of en...
4 篇 institute for di...
4 篇 docomo conimunic...
4 篇 joint research i...

作者

50 篇 harald haas
36 篇 cheng-xiang wang
22 篇 wang cheng-xiang
16 篇 john thompson
14 篇 david i. laurens...
13 篇 john s. thompson
13 篇 marco di renzo
13 篇 sinan sinanovic
11 篇 xiang cheng
10 篇 haas harald
10 篇 laurenson david ...
9 篇 cheng xiang
9 篇 yuan dongfeng
8 篇 gunther auer
8 篇 dongfeng yuan
7 篇 norbert goertz
7 篇 xuemin hong
7 篇 xiaohu ge
6 篇 svilen dimitrov
6 篇 c.-x. wang

语言

231 篇 英文
6 篇 中文
1 篇 其他

检索条件"机构=IDCOM and the Joint Research Institute for Signal and Image Processing"

共 238 条记录，以下是81-90 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：

A Simplified Unbiased MMSE Metric Based QRDM Decoder for MIMO Systems

A Simplified Unbiased MMSE Metric Based QRDM Decoder for MIM...

引用

International Conference on Wireless Communications, Networking and Mobile Computing (WiCom)

作者： Xiang Wu John S. Thompson Institute of Digital Communications Joint Research Institute of Signal & Image Processing School of Engineering University of Edinburgh Edinburgh UK

In contrast to the conventional QR-decomposition M (QRDM) algorithm, the unbiased MMSE metric based QRDM algorithm exploits MMSE metric instead of the maximum likelihood (ML) metric, leading to enhanced performance with less complexity. However, for an efficient hardware implementation, the sorting stages involved at every QRDM detection stage can still be quite time and resource consuming. Hence, we propose a simplified QRDM approach, denoted as S-QRDM, which only performs the full enumeration (FE) on certain number of top search layers, while utilizing the single enumeration (SE) for the remaining search layers. Therefore, the need for the sorting process for those layers is eliminated and the required number of multipliers is reduced simultaneously. The proposed S-QRDM detector has been implemented on a state-of-the-art Xilinx FPGA device and the results indicate that the proposed approach is more efficient in either logic or computational FPGA resources compared to the original algorithm.

关键词： MIMO Measurement Field programmable gate arrays Sorting Iron Complexity theory Algorithm design and analysis

来源：评论

学校读者我要写书评

暂无评论

An adaptive rate compress-and-forward cooperation for virtual-MIMO systems

An adaptive rate compress-and-forward cooperation for virtua...

引用

International Workshop on Cognitive Wireless Systems (UKIWCWS), UK-India-IDRC

作者： Jing Jiang John S. Thompson Xiang Wu Peter M. Grant Institute of Digital Communications Joint Research Institute of Signal & Image Processing School of Engineering University of Edinburgh Edinburgh UK

A practical virtual multiple-input multiple-output (MIMO) system that implements compress-and-forward (CF) cooperation is proposed in this paper. Bit-interleaved coded modulation (BICM) technique is implemented here to provide forward error correction and improve the system performance. A closed-form union bound for the system error probability is derived, based on which we prove that the smallest singular value of the cooperative channel matrix dominates the system error performance. Accordingly, an adaptive rate CF scheme is proposed, which uses the smallest singular value as the switching criterion. Depending on the instantaneous channel conditions, the relay could therefore choose various quantization rates. It is shown that the adaptive rate CF scheme eliminates unnecessary complexity for the quantization at the relay, and enables the virtual-MIMO system to achieve almost MIMO performance.

关键词： Bit error rate Receivers Relays MIMO Quantization Transmitters Modulation

来源：评论

学校读者我要写书评

暂无评论

Higher layer synchronization in an ECMA-368 ultra wideband network

Higher layer synchronization in an ECMA-368 ultra wideband n...

引用

IEEE International Conference on Ultra-Wideband

作者： Anyaegbu, Margaret U. Weir, Alexander Wang, Cheng-Xiang Joint Research Institute for Signal and Image Processing School of EPS Heriot-Watt University Edinburgh EH14 4AS United Kingdom TES Electronic Solutions Edinburgh EH28 8LP United Kingdom

ISBN: (纸本)9781424453061

An algorithm for implementing higher layer synchronization in ECMA-368 networks is being developed within the framework of the EUWB research and development project. In this paper, we adapt three synchronization algorithms used in wireless sensor networks to suit an Ultra Wideband (UWB) network and evaluate their performance in order to determine the best algorithm for a video streaming application scenario. We also propose some extensions to the ECMA-368 standard that would facilitate the implementation of these algorithms. For these purposes, we have simulated a UWB beacon group in OPNET. We observe that the algorithms that correct for clock drift are better suited for implementation in a UWB network. © 2010 IEEE.

关键词： Synchronization

来源：评论

学校读者我要写书评

暂无评论

The Cramer-Rao Lower Bound for 3-D state estimation from rectified stereo cameras

The Cramer-Rao Lower Bound for 3-D state estimation from rec...

引用

International Conference on Information Fusion

作者： Daniel E. Clark Spela Ivekovič Joint Research Institute in Signal and Image Processing Heriot-Watt University Edinburgh UK Royal Society of Edinburgh Edinburgh UK

It is well known that any 3-D state estimate computed from stereo camera measurements is corrupted by heteroscedastic noise due to the nature of the perspective projection. It is also well understood that the image measurements used to estimate the 3-D state are inherently noisy. Despite the wealth of research in this area, the accurate statistical characterisation of the uncertainty for any 3D state estimation from stereo algorithm is less well understood. This paper presents the Cramer-Rao Lower Bound (CRLB) for 3-dimensional state estimation from a rectified stereo pair of cameras. The paper also presents a method for efficient stereo estimation via Bayesian triangulation that achieves the CRLB. These results provide a basis for 3D statistical estimation for camera-based sensor measurements.

关键词： Cameras Estimation Bayesian methods Solid modeling Noise Stereo image processing

来源：评论

学校读者我要写书评

暂无评论

Indoor MIMO Optical Wireless Communication Using Spatial Modulation

Indoor MIMO Optical Wireless Communication Using Spatial Mod...

引用

IEEE International Conference on Communications (ICC)

作者： R. Mesleh R. Mehmood H. Elgala H. Haas Jacobs University Bremen Bremen Germany Institute of Digital Communications Joint Research Institute of Signal and Image Processing University of Edinburgh Edinburgh UK

In this paper, a multiple-input multiple-output (MIMO) technique for indoor optical wireless (OW) communication is proposed. The technique is referred to as optical spatial modulation (OSM). The key concept is based on spatial modulation (SM). At any given time instant, only one transmitter is active and the others are inactive. A transmitter in space is considered as a spatial constellation point which is assigned a unique bit sequence. Consequently, transmitters are turned on and off depending on the incoming data bits, similar to the activation of constellation points in traditional digital modulation schemes. Hence, a data rate of the base two logarithm of the number of transmit units is achieved. The active transmitter radiates a certain intensity level at a particular time instant. At the receiver side, the optimal SM detector is slightly modified and used to estimate the spatial constellation point. The estimated spatial constellation point is used to arrive at the original bit stream via de-mapping. The upper bound bit-error-ratio (BER) of OSM is analyzed for a MIMO configuration consisting of four transmit units (light emitting diodes (LEDs)) and four receive units (photo diodes (PDs)) in a room. The BER performance is determined for different transmitter and receiver separation distances and different transmitter half power semiangles (Φ1/2). It is shown that the proposed OSM technique achieves twice and four times the data rate as compared to OOK (on-off keying) and PPM (pulse-position modulation), respectively.

关键词： MIMO Optical modulation Wireless communication Optical transmitters Optical receivers Light emitting diodes Samarium Bit error rate Pulse modulation Digital modulation

来源：评论

学校读者我要写书评

暂无评论

Higher layer synchronization in an ECMA-368 Ultra Wideband network

Higher layer synchronization in an ECMA-368 Ultra Wideband n...

引用

IEEE International Conference on Ubiquitous Wireless Broadband (ICUWB)

作者： Margaret U. Anyaegbu Alexander Weir Cheng-Xiang Wang Joint Research Institute of Signal and Image Processing School of EPS Heriot-Watt University Edinburgh UK TES Electronic Solutions Edinburgh UK

关键词： Synchronization Protocols Delay Clocks Accuracy Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

VERTICALLY CHALLENGED ARRAY DESIGN FOR DOA ESTIMATION

VERTICALLY CHALLENGED ARRAY DESIGN FOR DOA ESTIMATION

引用

IEEE International Conference on Acoustics, Speech, and signal processing

作者： George P. Gera Bernard Mulgrew Institute for Digital Communications Joint Research Institute in Signal and Image Processing School of Engineering The University of Edinburgh Edinburgh EH9 3JL UK

ISBN: (纸本)9781424442959

We consider the use of arbitrary 3D arrays for direction-of-arrival (DOA) estimation, with the commonly used Cramer-Rao Bound (CRB) as the main performance measure. The contribution of this paper is a set of techniques for analyzing the benefits of sensor relocation over uncertain terrain, more specifically where the random elevation is unknown outside of current locations. Suitable arrays for data collection are defined and generated. Measures to assess the effects of planar coordinate improvements and sensor elevations are defined. Descriptions of suitable visualization formats to interpret these measurements are given, and some illustrative results support the utility of the proposed techniques.

关键词： Antenna arrays Direction of arrival estimation Random arrays Direction of arrival estimation Antenna arrays United States Department of Agriculture complementary return to bias arrays Data Collection Methods

来源：评论

学校读者我要写书评

暂无评论

On the performance of coded optical spatial modulation

On the performance of coded optical spatial modulation

引用

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： Raed Mesleh Hany Elgala Harald Haas School of Engineering and Science Jacobs University Bremen Bremen Germany Institute for Digital Communications Joint Research Institute for Signal and Image Processing University of Edinburgh Edinburgh UK

The performance of hard and soft convolutional channel coding techniques for optical spatial modulation (OSM) are analyzed in this paper. OSM is a recently proposed multiple-input multiple-output (MIMO) technique for indoor optical wireless (OW) communication. In OSM only one transmitter is active at a time and the others are turned off. The spatially separated transmit units are considered as spatial constellation points, i.e. the incoming bit sequence activates one of the transmit units. The active transmitter radiates a certain intensity level at a particular time instance. At the receiver side, optimal detection techniques are used to estimate the active transmitter index and retrieve the original information bits. In this paper, channel coding is applied to OSM and the performance of hard and soft detections are analyzed analytically and validated through Monte Carlo simulations. It is shown that the performance can be significantly enhanced by applying channel coding techniques and a gain in signal-to-noise-ratio (SNR) of about 5 dB and 7 dB at a bit-error-ratio (BER) of 10 -4 are achieved for hard and soft decisions, respectively.

关键词： Optical transmitters Light emitting diodes MIMO signal to noise ratio Optical receivers Bit error rate

来源：评论

学校读者我要写书评

暂无评论

Reduced Complexity Sphere Decoder for Spatial Modulation Detection Receivers

Reduced Complexity Sphere Decoder for Spatial Modulation Det...

引用

2010 IEEE Global Telecommunications Conference GLOBECOM 2010

作者： Abdelhamid Younis Raed Mesleh Harald Haas Peter M. Grant Institute of Digital Communications Joint Research Institute of Signal and Image Processing University of Edinburgh Edinburgh UK School of Engineering and Science Jacobs University Bremen Bremen Germany

In this paper a novel detection algorithm for spatial modulation (SM) based on sphere decoder (SD) tree search idea is proposed. The aim is to reduce the receiver complexity of the existing optimal decoder while maintaining an optimum performance. The algorithm performs a maximum likelihood (ML) search, only over those points that lie inside a sphere, centered at the received signal, of given radius. It is shown with the aid of analytical derivations, that for a SNR (signal-to-noise ratio) between 2~dB and 18~dB at least 45% and up to 85% reduction in the number of complex operations can be achieved with a close to optimal bit-error-ratio (BER) performance.

关键词： Decoding Complexity theory signal to noise ratio Transmitting antennas Receiving antennas Modulation Euclidean distance

来源：评论

学校读者我要写书评

暂无评论

Upper Bounds for the Analysis of Trellis Coded Spatial Modulation over Correlated Fading Channels

Upper Bounds for the Analysis of Trellis Coded Spatial Modul...

引用

IEEE Conference on Vehicular Technology (VTC)

作者： Marco Di Renzo Raed Y. Mesleh Harald Haas Peter M. Grant Laboratory of Signals and Systems (LSS) Ecole Superieure d'Electricite (SUPELEC) French National Center for Scientific Research (CNRS) Gif-sur-Yvette France School of Engineering and Science Jacobs University Bremen Bremen Germany Institute of Digital Communications (IDCOM) Joint Research Institute of Signal and Image Processing University of Edinburgh Edinburgh UK

Trellis Coded Spatial Modulation (TCSM) is a novel transmission technology for Multiple-Input-Multiple-Output (MIMO) systems, which has been recently proposed to improve the performance of Spatial Modulation (SM) over correlated fading channels. The fundamental principle of TCSM is to use convolutional encoding and Maximum-Likelihood Sequence Estimation (MLSE) decoding to increase the free distance between sequences of spatial constellation points, thus improving, especially over spatially correlated fading channels, the end-to-end system performance. In this paper, we propose tight analytical bounds for performance analysis of TCSM over correlated fading channels. In particular, the contributions of this paper are as follows: i) we propose two asymptotically tight (for high signal-to-Noise-Ratios, SNRs) upper bounds for the analysis of uncoded SM schemes, which offer a better accuracy than already existing frameworks, ii) we propose a simple Chernoff bound for performance analysis of TCSM, which, although weak, can well capture the diversity order of the system, and iii) we propose an asymptotically tight (for high SNRs) true union bound for the accurate performance prediction of TCSM over correlated fading channels. Analytical frameworks and findings will also be substantiated via Monte Carlo simulations.

关键词： Upper bound Modulation coding Fading Performance analysis MIMO Samarium Maximum likelihood estimation Convolutional codes Convolution Maximum likelihood decoding

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24页 << < 5 6 7 8 9 10 11 12 13 14 > >>

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：