咨询与建议

限定检索结果

文献类型

  • 412 篇 会议
  • 150 篇 期刊文献

馆藏范围

  • 562 篇 电子文献
  • 0 种 纸本馆藏

日期分布

学科分类号

  • 252 篇 工学
    • 172 篇 电气工程
    • 124 篇 信息与通信工程
    • 77 篇 计算机科学与技术...
    • 23 篇 电子科学与技术(可...
    • 15 篇 仪器科学与技术
    • 11 篇 交通运输工程
    • 11 篇 软件工程
    • 6 篇 机械工程
    • 6 篇 航空宇航科学与技...
    • 5 篇 控制科学与工程
    • 5 篇 生物医学工程(可授...
    • 4 篇 测绘科学与技术
    • 2 篇 土木工程
    • 1 篇 光学工程
    • 1 篇 船舶与海洋工程
  • 52 篇 理学
    • 22 篇 物理学
    • 11 篇 数学
    • 10 篇 生物学
    • 8 篇 系统科学
    • 2 篇 地球物理学
    • 1 篇 化学
    • 1 篇 海洋科学
  • 30 篇 医学
    • 21 篇 临床医学
    • 14 篇 基础医学(可授医学...
    • 9 篇 特种医学
    • 3 篇 医学技术(可授医学...
  • 6 篇 教育学
    • 6 篇 心理学(可授教育学...
  • 3 篇 文学
    • 3 篇 新闻传播学
  • 3 篇 管理学
    • 3 篇 管理科学与工程(可...
  • 1 篇 农学

主题

  • 562 篇 adaptive coding
  • 69 篇 modulation codin...
  • 62 篇 image coding
  • 62 篇 decoding
  • 52 篇 throughput
  • 46 篇 encoding
  • 42 篇 fading
  • 39 篇 data compression
  • 37 篇 bit rate
  • 30 篇 bandwidth
  • 30 篇 frequency
  • 30 篇 adaptive modulat...
  • 29 篇 protocols
  • 27 篇 computer science
  • 26 篇 physical layer
  • 26 篇 bit error rate
  • 25 篇 statistics
  • 25 篇 quantization
  • 25 篇 delay
  • 24 篇 signal to noise ...

机构

  • 5 篇 univ illinois de...
  • 4 篇 univ illinois co...
  • 4 篇 department of el...
  • 4 篇 stanford univ de...
  • 3 篇 clemson univ dep...
  • 3 篇 information syst...
  • 3 篇 samsung electron...
  • 3 篇 carleton univ sc...
  • 3 篇 department of co...
  • 3 篇 school of inform...
  • 3 篇 univ arizona dep...
  • 3 篇 univ maryland de...
  • 3 篇 school of electr...
  • 3 篇 clemson universi...
  • 3 篇 univ hong kong d...
  • 3 篇 queens univ dept...
  • 2 篇 princeton univ d...
  • 2 篇 department of co...
  • 2 篇 louisiana state ...
  • 2 篇 broadband commun...

作者

  • 6 篇 djordjevic ivan ...
  • 5 篇 pursley michael ...
  • 5 篇 r. rinaldo
  • 5 篇 raghavan vasanth...
  • 5 篇 b. ryabko
  • 5 篇 veeravalli venug...
  • 4 篇 changeon kang
  • 4 篇 linder tamas
  • 4 篇 j. astola
  • 4 篇 takki yu
  • 4 篇 daesik hong
  • 4 篇 michael b. pursl...
  • 3 篇 dacheng yang
  • 3 篇 hiraku okada
  • 3 篇 h. yanikomeroglu
  • 3 篇 kentaro kobayash...
  • 3 篇 shingo hattori
  • 3 篇 kirschner matthi...
  • 3 篇 tobler philippe ...
  • 3 篇 weng jian-jia

语言

  • 548 篇 英文
  • 12 篇 其他
  • 2 篇 中文
检索条件"主题词=adaptive coding"
562 条 记 录,以下是171-180 订阅
排序:
adaptive Spectral Transform for Wavelet-Based Color Image Compression
收藏 引用
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY 2011年 第7期21卷 983-992页
作者: Bayazit, Ulug Istanbul Tech Univ Dept Comp Engn TR-34469 Istanbul Turkey
Since different regions of a color image generally exhibit different spectral characteristics, the energy compaction of applying a single spectral transform to all regions is largely inefficient from a compression per... 详细信息
来源: 评论
Semiunitary Precoding for Spatially Correlated MIMO Channels
收藏 引用
IEEE TRANSACTIONS ON INFORMATION THEORY 2011年 第3期57卷 1284-1298页
作者: Raghavan, Vasanthan Sayeed, Akbar M. Veeravalli, Venugopal V. Univ Wisconsin Dept Elect & Comp Engn Madison WI 53706 USA Univ Illinois Dept Elect & Comp Engn Urbana IL 61801 USA Univ Illinois Coordinated Sci Lab Urbana IL 61801 USA
The focus of this paper is on spatial precoding in correlated multiantenna channels where the number of data-streams is adapted independent of the number of transmit antennas. Towards the goal of a low-complexity impl... 详细信息
来源: 评论
Neural circuits underlying adaptation and learning in the perception of auditory space
收藏 引用
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS 2011年 第10期35卷 2129-2139页
作者: King, Andrew J. Dahmen, Johannes C. Keating, Peter Leach, Nicholas D. Nodal, Fernando R. Bajo, Victoria M. Univ Oxford Dept Physiol Anat & Genet Oxford OX1 3PT England
Sound localization mechanisms are particularly plastic during development, when the monaural and binaural acoustic cues that form the basis for spatial hearing change in value as the body grows. Recent studies have sh... 详细信息
来源: 评论
adaptive coding and modulation for the DVB-S2 standard interactive applications: Capacity assessment and key system issues
收藏 引用
IEEE WIRELESS COMMUNICATIONS 2007年 第4期14卷 61-69页
作者: Alberty, Eric Defever, Sophie Moreau, Cyrille De Gaudenzi, Riccardo Ginesi, Alberto Rinaldo, Rita Gallinaro, Gennaro Vernucci, A. EADS Astrium Toulouse France European Space Agcy ESTEC RF Payload & Syst Div NL-2200 AG Noordwijk Netherlands Space Engn SpA Rome Italy
Point-to-point multibeam satellite systems based on the DVB-S standard [1] are currently designed for link closure in the worst-case propagation and location conditions. The DVB-S standard, conceived for broadcasting ... 详细信息
来源: 评论
Generalized Zigzag Scanning Algorithm for Non-square Blocks
收藏 引用
17th International Multimedia Modeling Conference, MMM 2011
作者: Ding, Jian-Jiun Lin, Pao-Yen Chen, Hsin-Hui Natl Taiwan Univ Grad Inst Commun Engn Taipei 10617 Taiwan
In the shape-adaptive compression algorithm, an image is divided into irregular regions instead of 8x8 blocks to achieve better compression efficiency. However, in this case, it is improper to use the conventional zig... 详细信息
来源: 评论
Optimal Distributed Relay Selection in Underlay Cognitive Radio Networks: An Energy-Efficient Design Approach
Optimal Distributed Relay Selection in Underlay Cognitive Ra...
收藏 引用
IEEE Wireless Communications and Networking Conference (WCNC)
作者: Chen, Dan Ji, Hong Li, Xi Beijing Univ Posts & Telecommun Minist Educ Key Lab Universal Wireless Commun Beijing 100876 Peoples R China
Most previous work in CR relay networks concentrates on maximizing physical layer QoS (e. g., capacity, spectral efficiency and achievable data rate) as relay selection criteria. However, the energy state of relay nod... 详细信息
来源: 评论
Energy-Efficient Cross-Layer Enhancement of Multimedia Transmissions over Cognitive Radio Relay Networks
Energy-Efficient Cross-Layer Enhancement of Multimedia Trans...
收藏 引用
IEEE Wireless Communications and Networking Conference (WCNC)
作者: Chen, Dan Ji, Hong Leung, Victor C. M. Beijing Univ Posts & Telecommun Minist Educ Key Lab Universal Wireless Commun Beijing 100876 Peoples R China Univ British Columbia Dept Elect & Comp Engn Vancouver BC Canada
In cognitive radio (CR) networks, cooperative relaying is a promising technology to improve the performance of secondary users (SUs), while ensuring the quality of service (QoS) of primary transmissions. Most previous... 详细信息
来源: 评论
Location-Dependent Power Setting for Next Generation Femtocell Base Stations
Location-Dependent Power Setting for Next Generation Femtoce...
收藏 引用
IEEE Wireless Communications and Networking Conference (WCNC)
作者: Tsao, Kang-Ju Shen, Sung-Chieh Hou, Ting-Chao Natl Chung Cheng Univ Dept Commun Engn Chiayi Taiwan Natl Chung Cheng Univ Dept Commun Engn Ctr Telecommun Res Chiayi Taiwan
In this paper, we study how the downlink received signal quality and throughput will be affected by deploying the Open Subscriber Group (OSG) Femtocell [1] using Location-Dependent Power Setting (LDPS) scheme with spe... 详细信息
来源: 评论
QoS Oriented Cross-Layer Design for Improving Multimedia Transmissions over Cooperative Relaying Networks
QoS Oriented Cross-Layer Design for Improving Multimedia Tra...
收藏 引用
54th Annual IEEE Global Telecommunications Conference (GLOBECOM)
作者: Chen, Dan Ji, Hong Beijing Univ Posts & Telecommun Key Lab Universal Wireless Commun Minist Educ Beijing 100876 Peoples R China
We propose in this paper, a distributed optimal relay selection scheme for cooperative wireless networks to improve the performance of multimedia transmissions, while taking into account application layer quality of s... 详细信息
来源: 评论
A Lossy acoustic Logging While Drill Compression Scheme based on Differential Prediction and FFT
收藏 引用
International Conference on Frontiers of Manufacturing Science and Measuring Technology (ICFMM2011)
作者: Liu, Yujie Zhou, Yunkai Xiao, Hongbing China Univ Petr Sch Comp Sci & Commun Engn Dongying 257062 Shandong Peoples R China
In this paper, by analyzing the characteristics of the data, we adopt lossy compression based on predictive coding method and FFT. Firstly, two-way differential prediction method is used for data, and then the predict... 详细信息
来源: 评论