the channel is shared by all nodes in the wireless networks. phy layer provides the wireless channel and mac layer manages the transmission of information over the channel.

this scheme is proposed to optimize the total system energy, and fulfill the joint cross layer optimization through channel allocation in mac layer and dynamic power allocation in phy layer.

该方案也是通过MAC层的信道资源分配和物理层的动态功率分配的跨层联合优化来实现。

互联网摘选

the latest draft of 802.11n ( draft 11.0) offers the potential of physical layer ( phy) data rates up to 600 mbps.

在802.11n最近的草案（草案11.0）中，物理层的数据传输速率可达600Mbps。

互联网摘选

algorithms are presented to design universal test& operations phy interface for an atm ( utopia) level-4 interface in a ten gigabit ethernet access system.

为了解决10G以太网接入系统中ATM通用测试及操作物理层接口（UTOPIA接口）的设计问题，提出了并行状态机的设计方法。

互联网摘选

to achieve large capacity and subscribers' requirements of high-date-rate multimedia service, great breakthroughs in phy layer are supposed to be made for future mobile communication system.

未来移动通信系统要达到大容量的要求，并满足用户高速移动多媒体业务的需求，需要在物理层技术上有所突破。

互联网摘选

the work in this paper was grounded by the project of wimax phy& mac layer fpga prototype from shanghai research center of wireless communication, china academic science.

本文以中科院上海无线通信研究中心的WiMAX基带FPGA原型系统研制项目为背景，对WiMAX自适应调制编码系统进行了算法研究、性能仿真测试和基于FPGA的硬件实现。

互联网摘选

it introduces the most important part of ethernet-the mac layer and the overall design which includes the design of send module, receive module and implementation of phy.

介绍了以太网中最主要的部分MAC层的原理和总体设计实现，其中包括发送模块的设计，接收模块的设计以及PHY层的实现。

互联网摘选

and this chip contains phy layer, so it can connect to rj45 socket which has built-in transformer directly.

另外该芯片内置以太网物理层可直接连接内置变压器的RJ45插座，而不需要专用的物理层芯片。

互联网摘选

corresponding to the use of frequency hopping ( fh) technology in phy, a slot synchronization scheme based on fh synchronization is proposed.

在此方案的基础上，考虑到物理层采用跳频技术，提出了一种利用跳频同步的时隙同步方案。

互联网摘选

this paper explains the ultra-high-speed phy technology offering a viable solution to the technical challenges of streaming video to consumer products over wireless networks.

流视频对消费产品在技术上提出了挑战，而超高速PHY技术对此挑战提供通过无线网络的可行解决方案。

互联网摘选

the test validated the registers of llc and phy operated correctly, bus connection with testing device established successfully and data traffic accurately.

经过验证，该设计可以实现对总线接口芯片寄存器的正确配置和读取操作；与总线测试设备连接正常，数据通讯正确。

互联网摘选

because of international physical ( phy) layer harmonization, the algorithm can be equally applicable to the other wireless local area network standards.

由于无线局域网物理层的一致性，此方法也适用于其他无线局域网标准。

互联网摘选

some of these changes are in the physical layer ( phy), in particular in the modulation and multiple access schemes.

这些变化中有些是在物理层，特别是在调制和多址接入方案中。

互联网摘选

mdio interface module block is an interface that is used in mac level to control and manage phy devices.

MDIO接口模块为以太网接口芯片中MAC层对PHY器件的控制管理接口。

互联网摘选

this research is a breakthrough for study of relationship of mac and phy, and is worthy of reference.

此研究是对无线光局域网MAC协议与物理层关系研究的突破，具有重要的参考价值。

互联网摘选

so it is very important to establish the seamless connection between np and phy.

因此，实现网络处理器与物理层设备的无缝连接就具有重要的现实意义。

互联网摘选

it emphasizes the specific design methods of phy level and mac level and gives the software realization methods of network functions.

重点研究了PHY层和MAC层的具体实现方法，给出了网络功能的软件实现方法。

互联网摘选

a study on the data streams of the phy sub-layer in the dedicated multimedia fiber industrial network

多媒体光纤工业专用网中物理层数据流的研究

互联网摘选

in phy layer, ofdm technique is introduced to guarantee the reliable data transmission in complicated physical environments.

在物理层，采用OFDM等技术为数据在复杂的物理环境中传输提供可靠的保证。

互联网摘选

the mac layer and phy layer specifications are defined in wimax standard.

WiMAX标准定义了无线城域网的MAC层和物理层技术规范。

互联网摘选

design and realization of the interface protocol of the pos-phy level 4 based on fpga

PL4接口在FPGA中的设计与实现

互联网摘选