物理層 的英文怎麼說
中文拼音 [wùlǐcéng]
物理層
英文
phisical layer-
Cebus symbol encoding sublayer physical layer conformance
Cebus符號編碼子層物理層一致性Cebus twisted pair physical layer conformance
Cebus雙絞線物理層一致性Cebus infrared physical layer conformance
Cebus紅外線物理層一致性Cebus pl and rf symbol encoding sublayer physical layer conformance
Cebuspl和rf符號編碼子層物理層一致性System safety design controls safety of datum from three aspects, " physics level ", " system level " and " data level "
系統安全設計從「物理層」 、 「系統層」 、 「數據層」三個方面對數據的安全性進行了控制。This leaves one with only 20 % of the dream to be expressed in physicality
這只留下20的夢想在物理層上被表達。There is a script for all of life upon earth projected by the solar sun through the holographic planes and onto physicality
太陽系太陽透過全息層並進入物理層，為地球上所有生命投射了劇本。Firstly, hart protocol is illustrated, its fsk physical layer specifies the transmittal manner of signal and voltage of signal. data link layer specifies the device type and data transport protocols
Hart協議採用iso osi簡化模型， iso osi分為七個功能層， hart協議只用了第一、二、七層，即物理層，數據鏈路層和應用層。This thesis has introduced the development of the traditional wireless sensor network and current situation at first, then analyzed the principle an framework of the wireless sensor network, and the challenge to the traditional wireless sensor network technology for environmental monitoring, put forward the novel environmental monitoring system based on wireless sensor network technology, have recommended a kind of brand - new wireless node design plan of framework of wireless sensor network and node hardware to be designed and realized, then based on ieee 802. 15. 4 standard, this thesis analysed the design faces the wireless communication protocol stack used in environmental monitoring, have introduced the realize of physics layer, data chain layer, network layer, application layer. have solved the wireless sensor network data sampling, systematic energy - conservation optimize, this thesis summarized the preceding work finally, have looked forward to the development, application and commoditization in the future
本文首先介紹了傳統無線傳感器網路的發展概況及現狀，然後分析了無線傳感器網路的原理與架構及其在環境監測對傳統無線傳感器網路技術的挑戰，接著本文提出了新穎的基於無線傳感器網路技術的環境監測系統架構設計，介紹了一種針對大氣環境監測的全新的無線傳感器網路節點的構架設計方案以及節點的硬體設計和實現，然後本文以ieee802 . 15 . 4標準為基礎分析設計了面向環境監測應用的無線通信網路協議棧，從工程角度介紹了物理層、數據鏈路層、網路層、應用層的設計實現，解決了無線傳感器網路節點的數據採集、節點互聯以及系統節能優化等問題，最後本文總結了前面的工作，展望了基於無線傳感器網路技術的環境監測系統在未來的發展方向和應用方式等幾個方面的發展遠景。( 2 ) resolute correlatively key technical problems, such as : embedded modem, embedded tcp / ip protocol, embedded webserver, gateway rg mode, lan inside network communication protocol, physical interface technology, total system miniaturization design and so on
（ 2 ）解決相關關鍵技術難點，主要包括：嵌入式modem 、嵌入式tcp / ip協議棧、嵌入式webserver 、家居網關rg模型、局域網內部網路通信協議、物理層介面技術、智能應用終端改造途徑、整個系統小型化設計等。Hsupa ( high speed uplink packet access ) is the new technique of r6, first in this thesis, the hsupa physical layer is introduced in detail. then base on the physical layer technique characteristic, according to the 3gpp simulation requirements and system simulation requirements, the hsupa downlink and uplink can be constructed by using matlab. then the data channel and control channel can be simulated, so the channels performance can be realized, provide the results can be provided to the system simulation, these ground the future practical applications
Hsupa （ highspeeduplinkpacketaccess ） ? ?高速上行分組接入就是r6版本中的新技術，本文首先詳細介紹了hsupa物理層的技術特徵，然後以其技術特點為依據，按照3gpp的模擬需求和系統級的模擬需求，使用matlab構建hsupa的上下行物理層鏈路，對其數據通道和控制通道進行模擬驗證，從而了解通道的性能，為系統模擬提供模擬數據，為以後的實際應用打下基礎，達到預研的目的。Hippi - 6400 - ph information technology - high - performance parallel interface - 6400 mbit s physical layer hippi - 6400 - ph
信息技術.高性能并行介面. 6400mbit s物理層On swithching technique, there are wired standards as homepna and ieee 1394, and wireless standards such as homerf, bluetooth. about the high level interconnect, there are havi for home video and audio connecting and control, sun ' s jini, osgi, and upnp from microsoft
在物理層接入技術上，有homepna 、 ieee1394 ， homerf 、 bluetooth等，在高層應用互聯上，有用於家居網路中音頻、視頻設備的互聯和控制方面的havi標準，有由sun公司提出的jini 。Consequently, the author presents the basic principle of ofdm, and the process how to utilize the certain technology based on fft & ifft to realize the ofdm system
描述了802 . 11協議介質訪問控制層和物理層的操作及幀結構。接著，作者論述了ofdm的基本原理，以及如何用基於fft和ifft的技術實現ofdm系統。Audio video bus av bus physical layer and media specification
視頻音頻母線物理層和介質規范Electricity metering - data exchange for meter reading, tariff and load control - part 42 : physical layer services and procedures for connection - oriented asynchronous data exchange
電量計.抄表電費和負荷控制的數據交換.第42部分:面向連接的異步數據交換用物理層使用和程序Secondly, based on the function requirement of usb device controller the system was divided into five modules, clock extracting, event detect, physical layer interface, media access controller, endpoint control layer and every module was designed in detail
其次，針對usb設備控制器的功能要求，將系統分為時鐘提取、事件檢測、物理層、介質訪問層、端點控制層五個模塊並對每個模塊進行了詳細設計。The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above
但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。Twisted pair physical layer and medium specification
雙絞線物理層和介質規范As such homeless humans ascend, they will find their way out of poverty, as the information necessary to function and take care of self blends with the physical in the integration of the parallel lives
當這些無家可歸的人提升，他們將找到脫離貧困的道路，因為在平行生命的整合中，運作且照顧好自己的必須信息會混和入物理層之中。分享友人