传输帧

首先介绍DRM传输帧结构和设计系统参数，然后对DRM中的OFDM信号发生功能单元进行分模块设计，最终进行模拟发射机改造和DRM广播实验。

The DRM transmission frame structure is introduced and parameters of the system is designed firstly , then OFDM signal generation function unit in the DRM system is module designed . Eventually the analog transmitter is reformed and DRM radio experiment is finished .

通过系统仿真，在AWGN信道下发现斜纹编织卷积码的系统性能与系统传输帧长和编码器个数都有很大的联系，其误码性能十分接近香农限，且没有错误地板效应。

Simulation results of WCCs with twill structure over AWGN show that the BER performance is affected greatly by the transmission frame length and the number of encoders , which also indicate that the error-correcting performance approaches Shannon limit and has no error floor .

对传输帧结构内信元构成机理进行了深入分析，并结合媒体接入控制协议（MAC）阐述带宽的动态分配；

The mechanism of the composition of cells in the transmitting frame struture was analyzed in the terms of the MAC protocol .

983建议，提出了一种基于固定长度的EPON上下行传输帧结构和媒质接入控制（MAC）协议。

983 about APON , a frame structure and a medium access control ( MAC ) protocal for EPON based on fixed length are given .

本论文完成了AOS传输帧接口程序的设计并为UDP和VCA接口的验证编写了测试程序。

This paper has completed the interface program design and the testing program for UDP and the VCA interface confirmation .

通过调试AOS传输帧接口程序和UDP及VCA接口测试程序在USB连机线驱动程序上已经实现了可靠的单机或双机之间的数据传输。

Through tested the interface program and the UDP and VCA testing program has realized the reliable transmission on the USB Data Link driver .

循环冗余校验CRC码是常用的检测错误的循环码，通过在每个传输帧中加入冗余信息，而检出其中的错误。

Cyclic redundancy check ( CRC ) js a cyclic code often used Redundancy information is added to every transport frame to detect the errors in it .

该码是16位802.1Q报头的一部分，被加在用于以太网和令牌环网上的MAC传输帧上。

The identifier is part of the 16-bit 802.1Q header , which is added to the MAC transmission frames used in Ethernet and token-ring networks .

讨论近距离空间链路协议Proximity-1的层次结构和传输帧Version-3构成，分析包括CCSDS标准包和用户自定义数据的数据业务及定时业务。

CCSDS Proximity 1 architecture and the transferring frame Version 3 are presented and the timing and data service are analyzed .

数据链路层规定了设备类型以及数据传输帧格式。

Data Link Layer specifies the device type and data transport protocols .

同时，提出了应用于该结构的智能控制信号传输帧结构以及通过设置可用波长被锁定的时间门限来实现三种具有服务等级的智能光链路建立方式。

In the intelligent control software , a very simple control frame for control information transportation is proposed along with an optical link setup method by using three kinds of resource lock threshold to realize a classification of service ( CoS ) of link establishment .

在邻居发现过程采用SBA-D算法；在数据通信中，把时间分为帧，每帧包含两个子帧：预约子帧和数据传输子帧。

SBA-D algorithm is used in the protocol to discovery neighbor . In data communication process , each frame is divided into two sub-frames : reservation sub-frame and data transmission sub-frame .

在一次以上冲撞后成功传输的帧数量。

The number of frames successfully transmitted after more than one collision .

一种适用于无线视频传输I帧的稳健容错算法

A Modified Robust Error Resilience Algorithm for Intra Coded Frame in Wireless Communication

第三章详细介绍了国家地面数字电视融合方案传输系统帧结构、信道编码和调制方式。

Chapter 3 . The framing structure , channel coding and modulation in merged scheme are introduced in detail .

为提高传输效率帧长通常较大，从而导致了光交换机中特有的分组累积效应。

The frame size is usually selected to be large enough in order to improve transmission efficiency , leading packet aggregation effect .

在传输的帧中加入体现优先权的仲裁字段，根据煤矿监控节点的多少采用静态或动态优先权分配机制，解决了冲突问题。

According to the number of monitor nodes , the distribution mechanism of static or dynamic priority is adopted to solve the collision .

首先，对信息传输的帧时隙进行动态调整，用概率分布计算重传的次数，从而得到最佳的帧长度。

Firstly , the time frame of information transmission dynamic adjustment , with probability distribution calculated the number of retransmission , so as to get the best frame length .

该协议规范了消息机制，实现数据传输单帧与多帧接口的统一，保障数据传输的可靠性；

Message mechanism is standardized in this higher CAN protocol , by which the API of multi-frame and single frame data transmission is unified , and the reliability of data transmission is ensured ;

三是对传输数据帧进行编码，避免长连0或长连1的情况出现，有利于信号的远距离传输和接收端对同步时钟的提取。

Three is to encode data frames , avoid long even " 0 " or even " 1 ", favorable to the long distance transmission of signals and the receiver to extract the synchronous clock .

为此，设计了适合工业现场环境信息采集及传输的帧格式，节点的自组网算法，并保证了系统的低功耗。

For this reason , we design the frame format suitable for environmental data collection and uploading , the ad hoc network algorithm of nodes , and ensure the system with low power consumption . 4 .

此串行通信的方法与单片机的专用串行通信口相比，它传输的帧长度可变，而且，不需要启始位与停止位等开销.增加了单片机的通信能力。

Compared with the method of serial communication using special ports , this method has some advantages , such as changed frame length , no start bit and stop bit , so the communication ability of the communication system improved greatly .

当传输信令帧时通过I／O域重映射技术，由用户程序直接对网络设备的基地址寄存器进行读写，减少了频繁陷入内核带来的开销。

Thirdly , when token packet transmitted , " Remapping Specific I / O Regions " technique is used to allow user accessing device 's base address register directly and avoid the unnecessary expense that would be caught in frequently access kernel .

自嵌入技术是信息隐藏研究的重要内容之一，可以用于网络传输丢帧恢复及证据保全等方面。

Self-embedding technology is an important part of information hiding technology , and it can be used in many fields , such as recovery of the lost data which is lost while being transmitted through the web , protection of important evidence is another example .

仿真结果表明，该机制能有效改善降低丢包率（packetlossrate，PLR），实时媒体帧平均传输时延和帧时延抖动等指标和具备传感器节点间的公平特征。

Simulation results demonstrate that lower Packet Loss Rate ( PLR ), and lower frame delay and jitter with good fairness among sensor nodes can be achieved by our proposed mechanism .

由于该网络接口系统不做任何数据解释的透明的传输TDM语音帧，从而可以与原有的程控交换机实现无缝接入。

For this interface unframed mode transparently transports the TDM frame without any attempt at interpreting the data , it seamlessly interfaces to all existing PBX equipment .

DMA控制器用于在收发接口单元和外部SRAM直接传输网络数据帧而不需要嵌入式MCU的直接控制，这样可以减少微控制器的负担。

DMA controller was used to transfer network data frame directly between the TRI and exterior SRAM without the interposition of embedded MCU . It can reduce the burden of MCU .

阐述了SDH（同步数字体系）传输设备的帧结构及各种开销字节的功能，分析了其告警的原因，提出故障定位的常用方法和故障处理的基本原则。

The frame structure and the functions of various overhead bytes for SDH transmission equipment are described , and the reasons of alert occuring are analyzed . In addition the common methods for troubleshooting and the basic principles to deal with these troubles are proposed .

本系统通过长时间的运行测试，在CIF格式下，网络延迟小于1秒，传输速率18帧/秒，可以广泛的应用于视频远程监控、视频会议等场合。

The delay time of network is lower than 1 second , and the rate achieve 18F / s under QCIF . So , the system can be used widely in video remote monitor environment , video conference and so on .

首先介绍了HSDPA的研究背景，通过与3GPPRelease99相比，明确分析了HSDPA带来的一系列变化，如引入的新的物理信道和传输信道，帧的格式变化等。

First , the background of HSDPA is illustrated , and compared with 3GPP Release 99 , the technology traits and the change it brings are discussed , such as the new transmit channel and physical channel , as well as the change of the frame .