中国科学院机构知识库网格系统: 检索

Research on High-Definition and High-Speed Video Transmission Technology Based on Double SDI 会议论文 OAI收割
Changsha, China, 2019-09-20
作者: Zhang, Hai Feng; Xie, Qing Sheng; Wang, Hua; Bian, He; Feng, Jia

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收藏 | 浏览/下载：28/0 | 提交时间：2020/06/18

Double SDI High-definition and high-speed Video transmission Lossless Private protocol

Event-based Control and Filtering of Networked Systems: A Survey 期刊论文 OAI收割
International Journal of Automation and Computing, 2017, 卷号: 14, 期号: 3, 页码: 239-253
作者: Lei Zou; Zi-Dong Wang; Dong-Hua Zhou

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收藏 | 浏览/下载：19/0 | 提交时间：2021/02/23

Event-triggered transmission networked systems event-based control event-based filtering event-triggered distributed state estimation distributed control with event-based protocol.

An adaptive routing protocol in underwater sparse acoustic sensor networks 期刊论文 OAI收割
AD HOC NETWORKS, 2015, 卷号: 34, 页码: 121-143
作者: Yu, Haitao; Yao, Nianmin; Liu, Jun

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收藏 | 浏览/下载：43/0 | 提交时间：2019/12/13

UASN Routing protocol Pipeline radius Transmission power level ns-3 simulator

开放式数字印刷控制系统中的关键技术研究 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院大学, 2014
作者: 胡建华

收藏 | 浏览/下载：74/0 | 提交时间：2015/09/02

开放式大幅面多通道数字印刷控制系统阈值噪声调制误差扩散高实时性数字印刷传输协议 Large format multi-channel open digital printing control system Threshold noise modulation Error diffusion High real-time performance digital printing transmission protocol

Communication synchronization in wireless optical link (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者: Guo J.; Guo J.; Wang H.; Wang H.; Wang H.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

An FPGA based transceiving synchronization method is demonstrated for Free Space Optical (FSO) communication system which is discussed separately as the transmitting protocol and the receiving protocol. During the discussion of these two parts the co-operation of them is also discussed. The transmitting protocol interfaces the outer input data with a parallel port buffers the input data encodes the input data stream serializes the parallel data and outputs the serialized data. It also has an output management unit to manage the activity of each part of the transmitting protocol. The receiving protocol filters and synchronizes the input serial data stream parallels the serial data stream decodes the input data checks received error handles transmission exception and interfaces the outer receiver with a parallel port. The entire transceiving protocol could be programmed into a single FPGA chip to improve system integrity and reduce the system cost. The presented protocol could be taken as "protocol transparent" for outer interfaces meaning that when interfacing the presented system to an outer system users don't have to consider what protocol the outer system transceiving data stream is under for example the TCP/IP protocol or anything else in the case that its I/O interface is a parallel port. Simulation and final experiment prove that the protocol presented is a working solution at a certain bit rate scale. 2012 IEEE.

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：35/0 | 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.

Physical layer design for free space optical communication (EI CONFERENCE) 会议论文 OAI收割
2012 International Conference on Control Engineering and Communication Technology, ICCECT 2012, December 7, 2012 - December 9, 2012, Shenyang, Liaoning, China
作者: Wang H.; Zhang Q.; Guo J.; Guo J.; Wang H.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

A small size Free Space Optical Communication System is introduced including the hardware and the hardware specified physical layer protocol. In detail the rapid synchronization method to reduce the handshake bandwidth requirement is demonstrated. The hardware of the system includes the laser driver system the signal amplifying and shaping system the data interface system. The hardware specified physical layer protocol is used to interface the outer data serialize and deserialize the data stream check transmission errors and schedule the data transmission. The overall system is a FIFO-like system and the user can use it as if he's operating a FIFO. The system is designed mainly for terrestrial FSO link whose signal channel is the atmosphere. Due to the complex composition and activity of the atmosphere this signal channel brings in great influence on the transmitting laser in it for example the absorption and scattering of the atmosphere molecules and aerosols the scintillation of received laser power caused by the turbulence of the atmosphere all of which results in a much higher Bit Error Rate (BER) of the communication system than wired communication systems leading to frequent resynchronization. In our system the sampling clock is generated locally using multi-phase sampling technique rather than PLLbased clock recovery which helps to rapid synchronization. 2012 IEEE.

Research of TCP optimization technology for long-distance and high bandwidth-delay private network 会议论文 OAI收割
2012 International Conference on Computer Science and Information Processing, CSIP 2012,, Xi'an, Shaanxi, China, August 24, 2012 - August 26,2012
Lv, Wenqi; Zhang, Jing

收藏 | 浏览/下载：22/0 | 提交时间：2014/12/07

Algorithms Bandwidth Computer science Congestion control (communication) Data communication systems Data processing Optimization Satellites Transmission control protocol

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.

An advanced LEO satellite network model based on MPLS-TP (EI CONFERENCE) 会议论文 OAI收割
2010 International Conference on Advanced Intelligence and Awareness Internet, AIAI 2010, October 23, 2010 - October 25, 2010, Beijing, China
作者: Zhang Y.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

LEO (Low Earth Orbit) satellite networks are capable of providing broadband access to end users in any part of the world. With the characteristics of high-speed movement and rapid dynamic topology of LEO satellites networking has always been one of the key issues in LEO satellite network. MPLS-TP (Multi-Protocol Label Switching-Transport Profile) is an excellent packet transport network (PTN) technology in terrestrial networks which can support multi-service and have perfect function of QoS (Quality of Service) OAM (Operation Administration Maintenance) and survivability. In this paper the characteristics of LEO satellite network and functional architecture of MPLS-TP are introduced. Then an advanced LEO satellite network model based on MPLS-TP (ALSN-M) is proposed which can guarantee a connection-oriented seamless data transmission. Furthermore topology and routing algorithms of proposed LEO satellite network model is analyzed. In the end the paper describes how to setup and remove a LSP (Label Switched Path) and how to maintain an exiting LSP when a handover happens.