physical layer

The Time Division Duplex communication protocol scheme defined Aerial Interface, Physical layer, Medium Accessing Control layer, Data Link layer and Network layer by mainly referring to the DECT layer divide and command alternant model, and therefore is an integrated communication protocol scheme.

该通信协议方案主要参照DECT的协议模型的层次划分结构和信令交互模式，分别对空中接口、物理层、媒体访问控制层、数据链路层和网络层进行定义，形成了比较完整的通信协议方案。

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RS 485 physical layer standard is applied to build bus topolopy control network, token bus is adopted in this network to realize multiple access in order to meet real-time request of control network.

应用RS485物理层标准，构建总线型的控制网络，采用令牌方式实现总线的共享访问，以适应控制网络实时性要求。

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This paper, based on the DSRC protocol basic specification, proposes the selection and setting of the corresponding optional parameters in physical layer, data link layer and application layer for ETC ( electrical toll collection) application.

根据领域中专用短程通信（）协议的基础规范，设计出应用于电子收费系统的物理层、数据链路层和应用层相关参数ITSDSRCDSRC选定和设置。

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We first summarize on development and characteristic of the UAN, and design three layered architecture that are physical layer 、 the data link layer and the network layer.

本文首先综述了水声通信网络的发展概况及其特点，设计了水声通信网络的三层结构，即物理层、数据链路层和网络层。

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Research of Key Signal Processing Techniques on Physical Layer of Cable Modem in HFC Networks

HFC接入网中CABLE Modem物理层信号处理关键技术研究

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Physical layer bandwidth of the data link is 1 056 Mbit/ s. Sustained throughput of 545 Mbit/ s was achieved at the data-link layer. The application layer throughput was 300 Mbit/ s.

链路物理层带宽达1056Mbit/s，链路稳定传输带宽为545Mbit/s，在应用层可得到300Mbit/s的数据传输率。

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This thesis is based on the Project of National High Tech Development ( 863 Project) named Research on 3G-Based Mobile Ad hoc Networks, and makes research on modulation and demodulation techniques in the physical layer.

本文以十五期间国家高技术发展计划（863计划）基于3G技术的移动自组织网研究为基础，对物理层调制解调关键技术进行研究。

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Present the Test Requirement; Test Equipment; Test procedure and Special notes of HART Physical layer Tested device.

本文介绍HART协议物理层设备的测试要求、测试设备、测试方法及测试时的一些特别说明。

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System View Simulation of Physical Layer of Standard IEEE 802.16

IEEE802.16协议物理层的SYSTEM VIEW仿真

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Design and Analysis of Simulation Algorithm of the 3G HF Network Physical Layer

3G短波网络物理层仿真算法设计与分析

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Level 1 corresponds to the OSI Layer 1 ( Physical Layer)

第1级对应于OSI第1层（物理层）

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OFDM is the most promising solution for the physical layer of future wireless communication networks.

正交频分复用（OFDM）是未来无线通信网络最具竞争力的物理层解决方案。

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The technology adopts OFDM as the physical layer modulation and access methods.

该技术采用0FDM作为物理层调制和接入方式。

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An encryption method in physical layer for digital TV system

数字电视广播系统的一种物理层加密方法

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Therefore, the physical layer security obtains the new attention.

因此，物理层安全重新获得了新的关注。

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Multi-carrier modulation ( MCM) is a preferable physical layer technology for BWS, since it can efficiently mitigate the frequency-dependent distortion across a wide frequency band and simplify the equalization in a multipath fading environment.

多载波调制（MCM）技术是适合BWS的物理层调制技术，可以很好的解决宽带无线情况下出现的频率选择性衰落现象及简化多径衰落信道环境的均衡问题。

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Based on the U.S. superscript MIL-STD-188-141B agreement, this paper studies primarily on key technologies of 3G physical layer HF Communication.

基于美军标MIL-STD-188-141B协议，本文主要研究第三代短波通信系统物理层的关键技术，设计完成了突发波形BW2的发送和接收方案。

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To guarantee the reliable physical layer communication, high-speed interface ( SFP) is tested firstly.

本文首先对SFP高速接口进行了调试，确保其通信正常。

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This paper will describe how to realize the fiber communication be-tween points in the CNC net base on the CNC net character. This module is designed with VHDL language and realized with FPGA, all of the function is realized in physical layer.

本论文将根据数控网络的这些特点，详细介绍如何在物理层，用VHDL语言设计一个满足这些要求的模块，通过光纤实现点对点的通信。

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Physical layer of TD-SCDMA could receive data by the unit of transmission time interval.

TD-SCDMA物理层的传输信道以传输时间间隔为单位接收数据，经过信道编码与复用的处理将数据映射到物理信道发送。

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Wideband network systems protocol stack includes physical layer, data link layer, network layer and application layer. The data link layer mainly completes multiple access, priority queues, data segmentation and reassembly, reliable transmission and other functions.

宽带网络系统协议栈分为物理层、数据链路层、网络层以及应用层，数据链路层主要完成多址接入、优先级队列、数据分段及重组、可靠传输等功能。

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Level 1 corresponds to the OSI Layer 1 ( Physical Layer )

第1级对应于OSI第1层 ( 物理层 )

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The core idea of improved OLSR routing protocol is adding evaluation model on the link quality change form the physical layer and the sent data size form the transport layer to the MPR ( Multipoint Relays) selection and route selection algorithm which is called Dijkstra.

改进的OLSR路由协议核心思想是在多点中继MPR（Multipoint Relays）选取法以及路由选路算法中，加入了对物理层链路质量变化以及传输层待发数据量的评估模型。

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The six layers are: wireless physical layer, wireless data-link layer, network layer, transport layer, mobile computing application supporting Environment, and application layer.

六个层次是：无线物理层、无线数据链路层、无线网络层、无线传输层、移动计算应用支撑环境和移动应用层。

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GigaBit Ethernet Physical Layer Solution Utilizing SFP Optical Transceivers and Quad-Channel SerDes

SFP光模块和4通道SerDes千兆以太网解决方案

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Ethernet Knowledge Lectutes ( 2)& Ethernet Media Access Control Method and Physical Layer Performance Standard

以太网知识讲座（2）&以太网介质接入控制方法和物理层性能标准规范

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Solving ATM over SDH Physical Layer Problem by the SDH Analyzer

SDH网络分析仪解决ATM Over SDH物理层问题案例分析

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The Coding Scheme of Cable Modem for Downstream Physical Layer

CABLE Modem下行流物理层编码

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This thesis proposed a high-altitude stratospheric platform ( HAPS) communication solution based on TD-SCDMA system with the purpose of exerting its exceptional advantages as well as avoiding unfavorable disadvantages. The thesis mainly focuses on the key technique applied in the physical layer.

本文提出了基于TD-SCDMA通信体制的高空平台平流层通信系统方案，旨在发挥平流层通信独特的优势并克服其存在的弊端，重点研究了平流层高空平台通信系统物理层关键技术。

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Energy Efficient Physical Layer Design for Passive RFID System

无源RFID系统中能量有效的物理层设计

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