mobile radio communication 中文意思是什麼

mobile radio communication 解釋
移動無線電通信
  • mobile : adj 1 活動的，運動的；可動的。2 易變的；易感動的；易變通的，靈活的，反復無常的。3 機動的，流動的...
  • radio : n. 1. 無線電訊[電報，電話]；無線電，射電。2. 無線電廣播；無線電（廣播）臺。3. 收音機。vt. ,vi. 用無線電傳送[廣播]；（向…）作無線電廣播[傳送]；用X射線拍照；用鐳醫治。
  • communication : n. 1. 通訊，通知；交換；信息；書信，口信，通報。2. 傳達，傳授；傳播；傳染。3. 交通，交通機關；聯系，連絡（設備）。4. 【宗教】接受聖餐。
  1. Low noise amplifier ( lna ) is widely used in front end of a received set of mobile communication 、 wireless radio 、 blueteech technology and so on 。 the active device is the core of the circuit and has significant effects on the whole equipment, therefore, the design of the active device is vital in lna

    微波低噪聲放大器（ lna ）廣泛應用於移動通訊、無線電、藍牙技術等的rf前端。 lna中的有源器件是整個電路的核心，對整個放大器電路的性能有著重要的影響，因此有源器件的設計是lna的關鍵技術之一。
  2. After the evolution from analog to digital, and from fixed to mobile communication, radio systems are undergoing the third revolution from hard - wired radios to software - defined radios

    軟體無線電是無線電領域模擬通信到數字通信，固定通信到移動通信之後，從硬體定義的無線電通信到軟體定義的無線電通信的第三次革命。
  3. Sgsn 900 1800mhz tdma digital cellular mobile communication network test method of gprs general packet radio service base station system and serving gprs support node interface

    900 1800mhz tdma數字蜂窩移動通信網通用分組無線業務gprs基站子系統與服務gprs支持節點
  4. Pmr requirements and measurement methods of electromagnetic compatibility for radio communication equipment part 3 : private land mobile radio and ancillary equipment speech and non - speech

    無線通信設備電磁兼容性要求和測量方法.第3部分:個人陸地移動無線電設備
  5. 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。
  6. And people are getting close touch with the mobile communication in the daily life. for the sake of each corresponding using the available frequency source and increasing mobile communication net, radio electric cover frequently adopts the frame of tiny honeycomb

    為了充分地利用現有的頻率資源和增加移動通信網的容量以達到個人通信的目的，目前的移動通信系統的無線電覆蓋常採用微蜂窩的結構。
  7. Should all automatic observing systems fail, essential meteorological elements will be measured manually on site and reported to amo for onward transmission to air traffic control every half an hour via trunk mobile radio or other available radio communication means such as mobile phones

    倘若所有自動觀測系統失靈，必須的氣象資料可用人手量度，再報給機場氣象所，然後每半小時經由集群無線電通話系統或其他無線電通訊渠道例如行動電話，發送給航空交通管制塔。
  8. Simultaneously, information process ability will improve intelligent device deployment inside electric power system as well. along with the development of mobile communication technique, mobile gprs ( general package radio service ) platform can realize ip connection anywhere and end to end wireless transparent transmission, so that it can provide convenient solution for electric power system existing long - distance connection of intelligent terminal with host station

    通信手段的進步可以提供更為經濟的供電與用電方的雙向交流，可以向用戶提供更多的分時定價手段。同時，信息處理能力的加強也可以在整個電力系統中促進智能化設備的推廣。移動gprs通信平臺，能夠實現ip數據端到端的無線透明傳輸，為電力系統遠程智能終端設備與主站的連接提供了方便的解決方案。
  9. 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。
  10. Tetra ( terrestrial trunked radio ) digital trunked radio communication system is a kind of advanced private mobile communication system and is a radio directed communication system, which can share resource, expenditure and channel equipments, provide kinds of services and have high efficiency

    Tetra數字集群系統是一種高級專用移動通信系統，是共享資源、分擔費用、共用通道設備和服務的多用途、高效能的無線調度通信系統。
  11. Hands - free speech communication is indispensable in audio and video conference systems, hot - line telephones and videophones, mobile radio terminals, digital isdn network etc. however, the control ( cancellation ) of the acoustic echo has always had a strong impact on the transmission quality in hands - free telecommunication ~ [ 1 - 3 ] conventional methods of acoustic echo control ( cancellation ), such as echo suppression or gain control, may lead to the degradations in speech quality or make the speakers feel uncomfortable

    免提式話音通信在移動電話、熱線電話、車載電話及isdn網的電視電話會議等多種領域正得到日益廣泛的應用。但至今的免提式話音通信中，仍免不了受回聲引起的話音失真、甚至嘯叫等干擾，大大降低了免提話音通信的質量。由於聲回波對消問題尚未得到圓滿解決，實現高質量的免提式話音通信仍是一個極賦挑戰性的課題。
  12. At present, kenwood with 11 domestic and 22 overseas subsidiaries around the world is aiming to become a global excellent company in the field of “ mobile & home multimedia systems ” with its core competencies in audio and wireless radio communication technologies under the new corporate vision - “ reaching out to discover, inspire and enhance the enjoyment of life

    目前，建伍在日本國內設有11家子公司，並擁有22家海外分支機構，秉承公司的「幫助人們發現、激發、提升生活樂趣」的新理念，以音頻和無線通信技術為公司的核心競爭力，致力於成為「移動及家庭多媒體系統」領域的一個世界知名的製造商。
  13. Gprs 900 1800mhz tdma digital cellular mobile communication network gprs general packet radio service test methods of tunnelling protocol

    900 1800mhz tdma數字蜂窩移動通信網通用分組無線業務
  14. Propagation characteristics in land mobile service and fixed service. part 3 : propagation characteristics ofline - of - sight radio relay communication systems

    陸地移動業務和固定業務傳播特性第三部分:視距微波接力通信系統傳播特性
  15. Embracing advanced digital radio communication and mobile computing technologies, cciii is the mission - critical system that hkpf relies on to support the 999 emergency services in the three regional command and control centres rcccs

    Cciii對警隊的運作十分重要，系統運用了先進的數碼無線電通訊和流動電腦技術，以支持三個總區指揮及控制中心的九九九緊急服務。
  16. Collaboration between the two branches was epitomised by the ongoing design and development of the third generation command and control communications system ( cciii ), which will be rolled out in three phases between late 2004 and early 2006. embracing advanced digital radio communication and mobile computing technologies, cciii is the mission - critical system that the force relies upon to support the 999 emergency services in the three regional command and control centres

    資訊應用科和通訊科合作的最佳例子，是第三代指揮及控制通訊系統（簡稱cciii ） 。這個系統將由二四年年底至二六年年初分三個階段推出。 cciii採用先進的數碼無線電通訊及流動電腦技術，以支援警隊三個總區指揮及控制中心的999緊急服務，是警隊的關鍵資訊系統。
  17. In this disseration the author researched the testing of gsm mobile telephone of the wireless instrument test and carried out it. the work that i shoud do is acquire the testing content 、 standard and method of test of the gsm mobile telephone, then write the driver program of the cmu200. first acquaint the communication system of gsm ; second introuced and analysized the technology of the software and hardware of control the programmable instrument, which include ieee 488 ( gpib ) standard bus 、 scpi ( standard commands for programmable ) and visa ( virtual instrument system architecture ) ; third reaserach the technology of software, it employs visual c + + 6. 0 as application development platform because of its powerful function, universality and programming and employs com module because of its characteristic 、 superiority ; the last ascertain the testing item and its standard 、 mehtod through searching the principle of gsm mobile and its testing criterion and select the programble instrment for testing according to the mobile telephone demands, which include cmu200 ( universal radio communication tester ) 、 e4445a ( spectrum analyzer ) 、 e4438c ( signal generator ), all of this build the platform of testing. i realize the automatic testing of gsm mobile telephone by using com module and visa 、 scpi

    論文中首先了解了gsm通信系統及其關鍵技術;再者研究分析了可編程儀器控制的軟硬體技術，包括ieee488 （ gpib ）標準總線、 scpi （ standardcommandsforprogrammableinstruments可編程儀器標準命令）和visa （ virtualinstrumentsystemarchitecture虛擬儀器軟體架構）為對可編程儀器進行驅動編程打下基礎;第三步研究了軟體實現技術，對組件的優勢和com的特點進行了分析確定採用com組件技術來完成驅動模塊;最後根據移動臺測試要求選擇可編程測量儀器cmu200綜測儀、 e4445a頻譜儀、 e4438c信號源和一臺測量控制計算機搭建起了測試平臺，研讀可編程儀器cmu200綜測儀的scpi命令和visa （虛擬儀器軟體架構） ，根據gsm移動臺測試方法在vc開發平臺下採用com組件形式完成對cmu200的驅動編程從而實現對gsm移動臺的自動測試。
  18. Space - time coding technology is based on multi - elements antenna array and has strong points of both time processing and space processing. it can satisfy the requirements of high data rate transmission in the future radio mobile system without the increase of the transmitting power and the spread of the frequency. and it can greatly improve the quality of communication services and system capacity under fading channels

    空時編碼技術是一種利用多天線陣發送和接收的技術，該技術能很好地結合時間處理技術和空間處理技術的特點，能在不增大發射功率和不擴展頻帶的前提下滿足未來無線移動通信對高數據率傳輸的要求，從而全面提高衰落通道的通信質量和通信系統容量。
  19. Four network platforms - qq, qq. com, qq game and paipai. com created and their vast communities respectively formed, we have primarily set up a new business layout and industry model - online society. tencents diversified products satisfy users multi - requirements in their daily life, such as qq. com, qq im and foxmail acquired in early of 2005 for transmitting information and obtaining knowledge ; personalized blog, q - zone together with our bbs, chatting room and group discussion function making group communication and sharing resources more easily ; characterized showing and entertainment being satisfied by qq show, qq pet, qq game and qq music radio tv on live, the special wireless value - added service, color ring and message just for those mobile users ; an c2c website, paipai. com being designed and developed for our tencent s users, now it is already combined with other products seamlessly

    在滿足用戶信息傳遞與知識獲取的需求方面，我們有qq . com門戶qq即時通訊工具以及年初收購的foxmail電子郵件滿足用戶群體交流和資源共享的方面，騰訊推出的個人博客qzone將與我們訪問量極大的論壇聊天室qq群相互協同在滿足用戶個性展示和娛樂服務方面，騰訊擁有非常成功的虛擬形象產品qqshow qqpet寵物和qqgame游戲qqmusic radio livetv音樂電臺電視直播產品，另外對手機用戶提供彩鈴彩信等無線增值業務在滿足用戶的交易需求方面，專門為騰訊用戶所設計開發的c2c電子商務平臺拍拍網已經上線，並和整個社區平臺無縫整合。
  20. Wcdma is a promising radio access technology for third - generation mobile communication systems because of its high flexibility to support a variety of voice and data service

    Wcdma以其更高的系統容量和更好的服務質量被視為一種有潛力的第三代移動通信系統多址接入技術。
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