通信發射機 的英文怎麼說
中文拼音 [tōngxìnfāshèjī]
通信發射機
英文
communication transmitter-
Scatter communication transmitter
散射通信發射機Recommended practice for measurement of spurious emission from land - mobil communication transmitters
陸地移動通信發射機附加發射的測量規程Recommended practice for measurement of spurious emission from land - mobile communication transmitters
地面移動通信發射機亂真發射測量的推薦實施規程As the key block of the wireless communication transmitter in rf, it is very useful in improving the output power and efficiency, lowering the loss of the supply, lowering the size and the weight, lengthening the time of communication. class e power amplifier which is suitable to amplify envelop signal is very important in modern communication system
功率放大器（ pa ）作為無線通信射頻發射機中不可缺少的關鍵電路，對于提高手機的功率效率、降低電源損耗、減小體積重量、延長通話時間有著舉足輕重的作用，而適用於恆包絡信號放大的e類功率放大器，更是在現代通信系統中佔有十分重要的地位。In wireless communication, the relative movement between the transmitter and the receiver may cause the change of the electromagnetic wave propagation path, thus makes the channel become a random time - variety channel
在無線通信中，發射機和接收機之間的相對移動會造成電波傳播路徑的改變，從而使通道變成隨機時變通道。Fibre optic communication subsystem test procedures - digital systems - time - resolved chirp and alpha - factor measurement of laser transmitters
纖維光學通信子系統試驗程序.數字系統.激光發射機的時間分辨線性調頻脈沖和因數測量Fibre optic communication subsystem test procedures - part 2 - 10 : digital systems ; time - resolved chirp and alpha - factor measurement of laser transmitters
纖維光學通信子系統試驗程序.第2 - 10部分:數字系統.激光發射機的時間分辨線性調頻脈沖和因數測量Fibre optic communication subsystem test procedures - part 1 - 4 : general communication subsystems ; collection and reduction of two - dimensional nearfield data for multimode fibre laser transmitters
纖維光學通信子系統試驗程序.第1 - 4部分:一般通信子系統.多模纖維激光發射機用二維近場數據的採集和換算Fibre optic communication subsystem basic test procedures - test procedures for general communication subsystems - collection and reduction of two - dimensional nearfield data for multimode fibre laser transmitters
光纖通信子系統基本試驗程序.一般通信子系統的試驗程序.多模纖維激光發射機用二維近場數據的採集和整理In wcdma system which uses direct sequence to spread spectrum, the spread spectrum code ( pn code ) phase of the receiver must be synchronized with that of the received signal precisely to despread and demodulate the signal correctly. multipath channel exists in the mobile communication environment for the radio signal reflection by obstacles between transmitters and receivers. by using the autocorrelation of the spread sprectrum code, rake receiver can process received signals and therefore multipath components can be resolvable
在wcdma系統中，為正確解擴解調接收到的擴頻信號，接收機本地產生的擴頻碼（ pn碼）相位必須和接收信號中的擴頻碼相位完全同步;同時移動通信環境中的傳輸信號由於接收機和發射機之間的直達路徑有可能被建築物或其他障礙物所阻礙，總是經過折射或反射的多條路徑后才到達接收機，從而產生多徑通道。For implement of wide band modulation, multi - carries and elimination of adjacent channel interference to satisfy ber requirement in wcdma system, which is most popular in 3g technology, the linearity requirement of the base station power amplifier becomes tighter
以wcdma為代表的第三代移動通信技術，為實現寬帶調制、多載波應用，同時減小鄰通道干擾以滿足通信系統的誤碼率要求，對基站發射機功放的線性指標要求苛刻。Ingaasp long - wavelength quantum well laser is at present appied most extensively in optical fiber communication. structuring its circuit model can optimize the design of the optical transmitter and it is significant to design high - qualitied optical communication system
Ingaasp四元系長波長量子阱激光器是目前在高速光纖通信中應用最為廣泛的一類激光源，構建其電路模型有助於完成光發射機的優化設計，這對于高質量的光通信傳輸系統有非常重要的意義。Its main function is to amplify and transmit the upconvertor ' s signal. it is applied to various kinds of ground equipment and satellite transponder. there was captured by foreign brand basically in the market of mobile communications in our country
眾所周知，功率放大器模塊是微波通信發射機的重要組成部分，它完成對上行鏈路信號的放大發射功能，廣泛的應用於各種地面設備和衛星轉發器中。In manually controlled applications, the dispatcher decides which transmitter site to use for reply by issuing a transmit select signal to the proper site voter module
在人工控制應用中，發信機通過將發射機選擇信號發送到適當的通道比選模塊上來決定使用哪一臺發射機進行應答。As the developing of economy and the progressing of science, microwave power meter has been used to measure output / input of transmitter / receiver ， output of signal generator and output of monofier, it has many uses in national defence, communication and scientific research
隨著經濟的發展，科技的進步，微波功率計已被廣泛用於測量發射機/接收機的輸出/輸入功率，信號源的輸出，以及振蕩器的輸出等。在國防、通訊、科研等領域有著廣泛的用途。Study and designed analog and digital impluse generator, guided by the signal integrity analysis finished the hardware pcb design of uwb transiver. finally the transmitter and receiver board has been built and got a satisfaction result. totally speaking, the thesis includes the following parts : ( 1 ) research the wave shape of the uwb communication system
以高速電路信號完整性分析為指導，採用最優結構完成了超寬帶發射機與接收機pcb電路的設計，本文的研究內容主要包括以下幾個方面: （ 1 ）分析超寬帶通信系統發射機所需信號波形。A modified real signal model of channelized transmitter is presented that employs multiphase filters and discrete fourier transform to maximize computing efficiency, which can mean much in a radio communication system that requires real - time processing
特別提出了改進的實信號通道化發射機數學模型，通過利用多相濾波與離散傅立葉變換，減少信號處理運算量，這對于強調實時運行的無線通信系統有重要意義。Methods of measurement for radio transmitters employing f3e emission used in the mobile services
移動通信調頻無線電話發射機測量方法The thesis makes and works as follows : at first, established the mobile channel model, through the analysis of the mobile channel characteristics ; the second, proved the advantage of ofdm througth comparing several parallel technologies, and implanting the ofdm technique in the mobile communication system modulator ; then, this thesis gived the baseband transmission architecture of ofdm mobile communication system and established the model of ofdm mobile communication system. at last, the thesis gives a brief introduction of the design of the hardware platform for the wireless communication system as well as the data transmission flaw
以下是本文所作主要工作：通過分析移動通道的特性建立了移動通信系統通道模型； ofdm技術與傳統的并行傳輸技術相比，具有很大的優勢，結合建立的移動通道模型，將此技術應用在移動通信系統之中；在對ofdm技術基本原理進行分析的基礎上，對ofdm移動通信系統進行建模與模擬分析：最後，給出了詳細的ofdm移動通信系統發射機和接收機的原理框圖，提出了一套基於dsp & fpga的ofdm移動通信系統硬體平臺設計方案。The main assignments are : accomplished the design of transmitter, receiver, coder and decoder module, control system of obu and rsu. the communication protocol and the main factors which would influence the communication are also discussed
主要工作內容為:完成了車載通信單元和路側通信單元光發射機、接收機、編碼解碼模塊以及控制系統的設計，並討論了通信協議的相關內容和影響通信的主要因素。分享友人