中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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浏览/检索结果: 共5条,第1-5条 帮助

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Energy-efficient two-stage cooperative multicast: effect of user density 期刊论文  iSwitch采集
Ieee transactions on vehicular technology, 2016, 卷号: 65, 期号: 9, 页码: 7297-7307
作者:  
Zhou, Yiqing;  Liu, Hang;  Pan, Zhengang;  Tian, Lin;  Shi, Jinglin
收藏  |  浏览/下载:35/0  |  提交时间:2019/05/09
Energy-Efficient Two-Stage Cooperative Multicast: Effect of User Density 期刊论文  OAI收割
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2016, 卷号: 65, 期号: 9, 页码: 7297-7307
作者:  
Zhou, Yiqing;  Liu, Hang;  Pan, Zhengang;  Tian, Lin;  Shi, Jinglin
  |  收藏  |  浏览/下载:19/0  |  提交时间:2019/12/13
A new low-bandwidth and wireless transmission scheme for CCd image (EI CONFERENCE) 会议论文  OAI收割
2012 International Symposium on Photonics and Optoelectronics, SOPO 2012, May 21, 2012 - May 23, 2012, Shanghai, China
作者:  
Zhang Y.
收藏  |  浏览/下载:33/0  |  提交时间:2013/03/25
The CCD (Charge-coupled Device) image sensor with its high resolution is capable of providing high definition image. However  transmission requires high bandwidth  which makes it very difficult to process and transmit in a long distance. The purpose of this paper is to propose a new method to process and transmit CCD image  which can guarantee a low-bandwidth and long-distance data transmission. The innovation is that the transmission content of CCD image data can be flexibly selected and compressed firstly  which will reduce the transmission data. Then it is processed on the base of communication protocol so that it can be fit for wireless transmission. At last  it is transformed into wireless signal and transmitted using 3G technology. As a result  the paper presents a wireless transmission scheme with the rate of 1.5Mbps for CCD image. 2012 IEEE.  
The design of high speed image acquisition system over Gigabit Ethernet (EI CONFERENCE) 会议论文  OAI收割
2010 IEEE International Conference on Wireless Communications, Networking and Information Security, WCNIS 2010, June 25, 2010 - June 27, 2010, Beijing, China
作者:  
Zhang W.;  He X.;  Zhang W.
收藏  |  浏览/下载:36/0  |  提交时间:2013/03/25
The applications based on traditional digital cameras have been limited by distance  cost and networking. Gigabit Ethernet is a data transmission standard based on the IEEE 802.3 protocol  brings several benefits to image transmission. In this paper  we compare the main features of Gigabit Ethernet and traditional digital camera interfaces. And  we design a high speed image acquisition system which overcomes these application limitations by allowing cameras to send imaging data over Gigabit Ethernet. In this system  we design a highly efficient  bidirectional conversion device based on FPGA  converts imaging data from a camera to IP packets based on UDP protocol  and sends it to PCs over inexpensive Cat-5 copper LAN cable. At the PC  the Cat-5 cable plugs into a standard Gigabit Ethernet NIC(network interface card)  eliminating the need for a frame grabber. An communications application software is used to acquire the network data  construct and display the image. A simple and efficient acknowledge and resend mechanism was used to guarantee packet delivery. The system architecture and the communication protocol are discussed in details  the experiment and results are presented in this paper. 2010 IEEE.  
Article I. Design for polymer vertical channel triple coupled microring resonators filter (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Communication, August 21, 2005 - August 26, 2005, Changshun, China
作者:  
Zhang D.;  Zhang D.;  Wang P.
收藏  |  浏览/下载:131/0  |  提交时间:2013/03/25