無號幀 的英文怎麼說

中文拼音 [háozhèng]
無號幀 英文
unnumbered frame
  • : 無Ⅰ動詞(沒有) not have; there is not; be without Ⅱ名詞1 (沒有) nothing; nil 2 (姓氏) a surn...
  • : 號Ⅰ名1 (名稱) name 2 (別號; 字) assumed name; alternative name3 (商店) business house 4 (...
  • : 量詞(幅, 用於字畫)
  1. Audio, video and audiovisual systems - interconnections and matching values - specification for interface for the interconnection of eng cameras and portable vtrs using non - composite signals, for 625 line 50 field systems

    音頻視頻和視聽系統.互連和匹配值.第3部分:使用625行, 50混合信便攜式vtrs和eng攝像機互連介面規范
  2. In pon, the transmission of downlink signal from olt to onu is not complex. usually, the information destined for onus are combined into a multiframe at olt via tdm before reaching the feeder fiber, and then broadcast to each onu via the passive optical demultiplexor. upon receiving the downlink multiframe signal, each onu takes out the part of information for itself only

    源光網路中, olt到onu的下行信的傳輸過程較為簡單,一般在olt將需要發送到各onu的信息採用時分復用的方式組成復送到饋線光纖,通過源光分路器以廣播的方式發送到每一個onu , onu收到下行復後分別取出屬于自己的那一部分信息。
  3. In the part of platform designing, proper peripheral chips are chosen according to the audio signal format. and how to achieve channel synchronization in the receiving part is an important aspect of wireless transmission system. in order to solve this problem, three algorithms are used ; those are scramble / descramble, improved over - sampling, and frame synchronization protocol

    在硬體驗證平臺的設計部分,文章根據音頻信的特點選擇了適當的外圍晶元,並且針對線傳輸接收端的同步問題,採用了三種演算法來減少失步現象,即擾碼/解擾演算法,改進型的過采樣演算法,以及同步協議。
  4. 1 ) realization of software packet embedded in m - es and md - is respectively to accomplish main function of mdlp, including assignment of tei ( temporary equipment identifier ), establishment of multiple frame operation, framing, flow control and error - free transmission of packets, is detailed. 2 ) a test model is established to evaluate the robustness and stability of mdlp and verify the validity of software packets. 3 ) according to the design of radio modem construction used in m - es, the modules of interface between data terminal equipment and radio modem are achieved to enable transmission of short message and continuous pseudo - random bit stream via rs232 uart

    本文首先概述了蜂窩數字分組數據網的結構和空中協議,詳細分析了移動數據鏈路協議,並在此基礎上,重點敘述了以下方面的工作: 1 )設計並完成了分別應用於m - es和md - is端線控制器的兩套程序實現數據鏈路層的主要功能,包括分配臨時設備、建立鏈路、組和面向連接的服務保證分組正確誤地傳輸,並進行適當的流控; 2 )建立測試模型測試移動數據鏈路協議的可靠性和穩定性,證明了程序包的效用; 3 )根據cdpd系統線數據機的軟硬體總體設計方案,完成了介面模塊,實現了rs232異步串口通信,使用戶可以根據需要發送短消息或連續的偽隨機比特流; 4 )在tms320c54x的軟體、硬體模擬平臺上,建立了cdpd試驗模型,實現了cdpd系統的mdlp基本功能。
  5. Furthermore, this paper exploringly studies an 802. 1 la high - speed wlan with the 54mbps data rate, and presents a sort of time synchronization and frequency offset estimation method based on the frequency domain auto - correlation of the unique preamble training sequence of 802. 11 plcp frame ; the method have the high time precision, the wide frequency estimat ion range and short convergence process ; and moreover, it can applied to other frame communication system

    另外本文還對最高傳輸速率為54mbps的802 . 11a高速線局域網系統進行了探索性研究,討論了ofdm調制技術在線局域網中的應用;結合802 . 11a物理層數據結構特點,提出了一種基於前導訓練符序列的頻域自相關時間和頻率同步方法,此方法具有定時精度高、頻偏估計范圍寬和同步建立迅速等特點,也適合於其它通信應用場合。
  6. This paper gives an overview on the development of wireless communication and the orthogonal frequency division multiplexing ( ofdm ) technique. basic characters of wireless channel, transmission principles and signal frame structure design of ofdm are introduced. main non synchronization factors between ofdm transceivers are pointed out

    本文介紹了線通信與多載波正交頻分復用( ofdm )技術的發展概況,闡述了線通道的基本特性、 ofdm的調制解調原理與信結構的設計,指出了導致ofdm收發信機間不同步的主要因素。
  7. Abstract : some problems about overall design of a small unmanned air vehicle telemetry system are presented in this paper. the construction and fundamental principle of the telemetry system is simply introduced. according to the telemetry task requirement, the key problems which should be solved at first are demonstrated mainly by system " s capacity design and channel design. the needed data transmission rate is carefully calculated with the telemetry parameter table provided by user and on this basis the frame structure is decided. the bit error rate in factual telemetry channel is grossly estimated in theory and a channel encoding scheme is provided to improve data transmission quality to meet with the requirement for extremely low bit error rate

    文摘:論述了某型人機遙測系統中的容量和通道設計問題.文中對該遙測系統的組成和原理進行了介紹.結合具體的遙測任務需求,在容量設計中確定了數據傳輸率和使用的格式,在通道設計中,通過計算實際通道中的誤碼率,提出了相應的通道編碼方案以確保數據傳輸的低誤碼率要求
  8. An transmission frame architecture and ofdm character architecture applicable to ofdm discussion on theoretical analysis on the estimate channel modules, five, the article introduces the long distance wireless communication are also presented

    並確定了系統的傳輸參數。同時提出了一個適用於ofdm線遠距離移動通信的傳輸結構和ofdm符結構。
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