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

6 篇 会议

馆藏范围

6 篇 电子文献
0 种 纸本馆藏

日期分布

学科分类号

6 篇 工学
- 4 篇 信息与通信工程
- 3 篇 电气工程
- 1 篇 计算机科学与技术...
- 1 篇 软件工程
1 篇 医学
- 1 篇 临床医学

主题

6 篇 parallel combina...
1 篇 non-linear ampli...
1 篇 signal detection
1 篇 constellation de...
1 篇 ultra wideband
1 篇 variable rate
1 篇 minimum euclidea...
1 篇 data mapping
1 篇 mud detection
1 篇 cyclic correlati...
1 篇 m-ary modulation
1 篇 code division mu...
1 篇 channel estimati...
1 篇 constant amplitu...
1 篇 m-pam modulation
1 篇 multicode transm...
1 篇 data hiding
1 篇 watermarking

机构

2 篇 harbin engn univ...
1 篇 school of inform...
1 篇 shizuoka univ gr...
1 篇 naval univ engn ...
1 篇 northwestern pol...
1 篇 natl supercomp c...

作者

2 篇 guo lili
1 篇 yixin xu
1 篇 luo qian
1 篇 hongyang shi
1 篇 ying chen
1 篇 fan yanhong
1 篇 dou gao-qi
1 篇 qi xiaodong
1 篇 ohuchi kouji
1 篇 zhang peng
1 篇 chen xiaoxia
1 篇 jiang xiaofei
1 篇 qi lin
1 篇 zhao di
1 篇 xue wei
1 篇 beiming li
1 篇 wang qing-bo
1 篇 ma xiaofeng
1 篇 li ye

语言

6 篇 英文

检索条件"主题词=parallel combinatory spread spectrum"

共 6 条记录，以下是1-10 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：

Constant amplitude signaling for parallel combinatory spread spectrum systems

Constant amplitude signaling for parallel combinatory spread...

引用

2nd International Workshop on Sequence Design and Its Applications in Communications

作者： Ohuchi, Kouji Shizuoka Univ Grad Sch Sci & Technol Hamamatsu Shizuoka 4328011 Japan

In this paper, a parallel combinatory spread spectrum (PC/SS) system using a constant amplitude signaling scheme is proposed. The amplitude of the transmitted signal from multicode transmission systems such as PC/SS systems have a large dynamic range which requires that amplifiers have a wide linearity in the transmitter. From a view point of power efficiency, however, it is reasonable to use non-linear amplifiers rather than linear ones. In that case, the bit error rate performance must degrade because of non-linear distortion. The proposed system can avoid influence of the non-linear amplifiers by making the transmitted signal have a constant amplitude. The bit error rate performance and the data transmission rate performance are investigated. They prove that the proposed system is an attractive candidate among the constant amplitude signaling systems.

关键词： multicode transmission parallel combinatory spread spectrum constant amplitude transmission non-linear amplifier

来源：评论

学校读者我要写书评

暂无评论

Performance Studies of UWB Communication System Based on parallel combinatory spread spectrum

Performance Studies of UWB Communication System Based on Par...

引用

5th International Conference on Wireless Communications, Networking and Mobile Computing

作者： Qi Lin Guo Lili Jiang Xiaofei Harbin Engn Univ Coll Informat & Commun Engn Harbin 150001 Peoples R China

ISBN: (纸本)9781424436927

A new ultra wideband (UWB) communication system based on parallel combinatory spread spectrum (PCSS) is proposed in this paper. The proposed system have the advantages both of PCSS system and UWB system, such as the high efficiency of information transmission and excellent secret property. Thus, the proposed system can meet the needs of efficiency and security as the same time in the modern communication system. The simulation model is provided and the performance is analyzed. The simulation results indicate that the UWB system based on PCSS has a better bit error rate (BER) performance.

关键词： ultra wideband parallel combinatory spread spectrum data mapping M-PAM modulation

来源：评论

学校读者我要写书评

暂无评论

The Improved Detection Algorithms of parallel combinatory spread spectrum Signal

The Improved Detection Algorithms of Parallel Combinatory Sp...

引用

4th International Conference on Wireless Communications, Networking and Mobile Computing

作者： Qi Xiaodong Luo Qian Zhao Di Guo Lili Harbin Engn Univ Coll Informat & Commun Engn Harbin 150001 Peoples R China

ISBN: (纸本)9781424421077

To reduce the influence of imperfect correlation characteristic between the spread sequences and noise in the channel on the performance of detection algorithms, two improved algorithms used to detect parallel combinatory spread spectrum (PCSS) signal are proposed. The improved detection algorithms based on cyclic correlation apply the cyclic correlation characteristic of PCSS signals to suppress Inner-interference and noise as well as jamming in the channel. And the other ones based on multi-user detection (MUD) use the configuration characteristic of PCSS signal to Improve the performance of the detection. The mathematics models of improved detection algorithms are provided and the performances are analyzed. Theoretic analysis and experimental results indicate that the improved algorithms based on cyclic correlation have the better performance to suppress noise and jamming in the channel and the Improved algorithms based on MUD have the better performance to suppress inner-interference as the result of imperfect correlation characteristic between the spread sequences. At the same time, the complexities of the algorithms are increased that limit their applied occasion except for abrupt communication systems.

关键词： parallel combinatory spread spectrum cyclic correlation detection MUD detection signal detection

来源：评论

学校读者我要写书评

暂无评论

Constellation Design of Nonequiprobable Signal and Its Application in parallel combinatory spread spectrum System 11

Constellation Design of Nonequiprobable Signal and Its Appli...

引用

IEEE 11th International Conference on Communication Software and Networks (ICCSN)

作者： Ying, Chen Dou Gao-qi Wang Qing-bo Naval Univ Engn Elect Engn Coll Wuhan Hubei Peoples R China

ISBN: (纸本)9781728121840

In the parallel combinatory spread spectrum (PCSS) system, the modulated symbols are with different probability, rather than equal probability like in the original communication system. Hence the existing constellation for equal probability points are no longer the best choice. In this paper, for the symbols with different probability, a constellation design method is provided to achieve a lager minimum Euclidean distance than the convolutional constellation. Further, according to this method, a new constellation is designed for the PCSS. The simulation results show that the PCSS with the new designed constellation achieves a better performance than the original PCSS.

关键词： constellation design parallel combinatory spread spectrum minimum euclidean distance

来源：评论

学校读者我要写书评

暂无评论

Efficient Audio Data Hiding via parallel combinatory spread spectrum 8

Efficient Audio Data Hiding via Parallel Combinatory Spread ...

引用

Proceedings 2015 8 International Congress on Image and Signal Processing (CISP)

作者： Zhang, Peng Li, Ye Ma, Xiaofeng Fan, Yanhong Chen, Xiaoxia Natl Supercomp Ctr Jinan Shandong Comp Sci Ctr Shandong Prov Key Lab Comp Networks Jinan Peoples R China Northwestern Polytech Univ Sch Software & Microelect Xian Peoples R China

ISBN: (纸本)9781467390989

spread spectrum (SS) modulation is one of the most commonly used methods for data hiding. However, the capacity of SS-based methods is rather limited. To improve the hiding efficiency, this paper presents a method that employs the parallel combinatory spread spectrum (PCSS), in which the hidden data can be transmitted in parallel with a combination of a few pseudo noise sequences. An informed embedding strategy is applied to PCSS data hiding to improve its robustness. Compared with the methods using the techniques of code division multiple access (CDMA) and M-ary SS modulation, the proposed method can provide a much higher achievable capacity with similar decoding complexity. This method is evaluated in an audio data hiding system, and the experimental results show that the embedded data can resist typical signal processing and attacks, even in high-capacity applications.

关键词： data hiding watermarking M-ary modulation code division multiple access parallel combinatory spread spectrum

来源：评论

学校读者我要写书评

暂无评论

Research on parallel combinatory spread spectrum Communication System with Adaptive Variable-Rate Data Transmission

Research on Parallel Combinatory Spread Spectrum Communicati...

引用

2017 2nd International Conference on Automation,Mechanical Control and Computational Engineering(AMCCE 2017)

作者： Beiming Li Hongyang Shi Yixin Xu Xue Wei School of Information and Communication Engineering Harbin Engineering University

This paper presents a novel parallel combinatory spread spectrum（PC/SS） communication system which combining with channel estimation *** can be used to realize adaptive variable-rate data *** the channel condition changes during the communication process,the number of the selected PN sequences is changed through the signal-to-noise ratio（SNR） feed-backed from the channel estimation[1].So as to realize the control the data transmission *** the number is denoted by *** simulation results show that choosing large r-value for large SNR and choosing small r-value for small SNR can ensure the bit error rate below 10 and improve the average data transmission rate.

关键词： parallel combinatory spread spectrum channel estimation variable rate

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1页 << < 1 > >>

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：