wireless communications system 中文意思是什麼

wireless communications system 解釋
無線電臺通信系統
  • wireless : adj 無線的；無線電報的，無線電的；無線電話的。 a wireless enthusiast [fan] 無線電迷。 a wireless ...
  • communications : 溝通
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. Providing an extremely flexible method for establishing communications, the mobile self - organizing network has potential applications in both military and commercial communications. based on the gsm wireless communication system and the ad hoc network, there are two level hierarchies in the mobile self - organizing network : wireless routers and wireless hosts. wireless routers perform the function of constructing routes, forwarding data, and locating mobile hosts

    結合蜂窩式無線移動通信系統和adhoc網路的特點，本文設計了具有兩級網路結構的無線移動自組織網路系統，使用專門的無線設備? ? 「無線路由器」構成具有用戶無線接入、無線組網和路由功能的無線互連網路，為移動用戶提供無線接入、路由和中繼服務。
  2. 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。
  3. The beijing ruilan united communications equipment company ( formerly a canadian company ) signed recently a contract with the china satellite communications group on construction of the 3. 5ghz land fixed wireless access system in nanjing

    日前，北京瑞瀾聯合通信設備有限公司（原加拿大運通通信公司，以下簡稱「瑞瀾公司」 ）與中國衛星通信集團（以下簡稱「衛星集團」 ）簽訂了南京3 5ghz地面固定無線接入系統工程合同。
  4. Personal communications services ( pcs ) - two - way, voice and digital, wireless telecommunications system

    個人通訊服務-是一種雙向、音頻和數字無線通訊系統。
  5. It has been widely applied in personal communications, mobile communications and the field of broad band wireless access, and it has also been regarded as the main air access of the third generation mobile communications, because comparing with tdma and fdma, cdma has greater system capacity, higher frequency efficiency and stronger anti - interference ability, at the same time it still has the potential of solving the conflict of limited frequency resource and limitless user request

    相對于tdma ， fdma等多址技術而言，它具有系統容量大，頻帶利用率高，抗干擾能力強，保密性能好等優越性，同時還具有緩解有限頻帶與無線用戶需求之間矛盾的潛力，因而在個人通信，移動通信，寬帶無限接入領域都得到了廣泛的應用，也被普遍認為是未來第三代移動通信的主流空中介面技術。
  6. The application of smart antenna technique in wireless communications gives us a new solution. it allows the base station to transmit to and receive from mobiles by directional beams, which can improve the system performance by relieving the cci, decreasing the transmission power, improving the spectrum efficiency, enlarging the system capacity and so on

    空域自適應濾波即智能天線技術在移動通信領域的引入為這些問題的解決帶來了新的思路，它能夠實現基站對移動臺的定向發射和接收，從而能大大減輕系統的多址干擾，降低系統的發射功率，提供系統的頻譜利用率，增大系統容量等好處。
  7. Bluetooth is a short - range wireless data and voice communications technology, is the ieee802. 15 agreement as a low - power, low - data - rate, low - cost technologies, which is very suitable for home automation, security system and lo5a8w - data - rate transmission between low - cost equipment, bluetooth technology is in line with the development of information appliances optimization technology is well - suited to the requirements of domestic intelligence, will in the future smart home were widely available

    藍牙技術是一種短程無線數據與語音通信技術，屬于ieee802 . 15協議，作為一種低功耗、低數據速率、低成本的技術，非常適合於家庭自動化、安全保障系統及進行低數據率傳輸的低成本設備之間，藍牙技術是很符合信息家電發展的優選技術，很適合家居智能化的要求，必將在未來的智能家居中獲得廣泛應用
  8. Based on the theory of nonlinear dynamics system, this paper discusses the theory about wireless chaos security communications and its history and status quo of development, then emphasizes the new communication technology - chaotic pulse position modulation, and the realization of non - chaos synchronization wireless security communication system using the technology

    本文以非線性動力學系統理論為基礎，論述了無線混沌保密通信的相關理論及發展歷史和現狀，並著重講述了混沌脈沖位置調制（ chaoticpulsepositionmodulation ）這一新穎的通信技術，和利用此技術實現的無混沌同步的無線保密通信系統。
  9. The explosive growth of wireless communications system has driven research and development on rf ic

    無線通訊系統的蓬勃發展推動了射頻集成電路的研究與開發。
  10. Other sub - projects in the maglev communication system projects deal with the communication channel, including baseband signal encoding and decoding, transmitting and receiving the wireless signal and baseband signal processing the technique of synchronization is deeply request in the digital communications system

    本課題涉及車地通信系統中基帶的通道編解碼和無線通道的收發，完成通信系統中基帶信號處理部分的部分功能。在數字通信中，同步是一個重點。
  11. Recently spread spectrum technique has been used widely in wireless data communication, cellular mobile communication, military communication and telemetry monitor system with resistance to interference, high usage of spectrum, resistance to multi - path fading, so investigators in communications field pay more attention to the technique, especially direct sequence spread spectrum ( dsss ) technique

    近年來，擴頻技術以其抗干擾能力強、頻譜利用率高、抗多徑等優越性能在無線數據通信、蜂窩移動通信、軍事通信以及遙測監控系統中獲得了廣泛的應用，並日益受到通信領域研究人員的重視，特別是直接序列擴頻技術（ dsss ） 。
  12. Multicarrier wireless communications have been widely investigated in the past decades. recently, two - dimensional spread spectrum ( 2d - ss ) system has drawn a lot of attention because of its full utilization of spreading characteristics in the frequency domain and time domain. compared with multicarrier code division multiplex access ( mc - cdma ), 2d - ss system can effectively mitigate multiple access interference ( mai ) due to spreading in the time domain

    當前多載波無線通信技術得到了廣泛的研究，二維擴頻通信系統是近年來提出的新的擴頻通信方式，由於二維擴頻系統從時域和頻域上分別對數據信號進行頻譜擴展，因此它同時具有時域擴頻和頻率擴頻通信系統的特點，是對傳統的一維時域直接序列擴頻和多載波擴頻的推廣。
  13. The definitions and primary properties of complementary codes and complete complementary codes are given, which is the theoretical foundation of cc / ccc application in wireless communications system

    介紹了互補碼和完全互補碼的定義，給出了它們的重要性質，這是其在無線通信系統中應用的理論基礎。
  14. With the development of the modern wireless communications, the request for the frequency synthesizers is higher and higher in the system of the mobile communication, radar, guided weapon and electronic counter

    隨著現代無線通信事業的發展，移動通信、雷達、制導武器和電子對抗等系統對頻率合成器提出了越來越高的要求。
  15. Based on adaptive transmission, in this paper, several key technologies are studied on the wide - band wireless digital communications. the basic idea is to decrease system spending, optimize the whole system performance, reduce computation complexity, shorten transmission delay, improve the real - time processing capability, and cut cost

    本文基於自適應傳輸的思想，對寬帶無線數字通信中的關鍵技術進行了研究，力圖節省系統開銷，從整體上優化系統性能，降低計算復雜度，縮短傳輸時延提高系統的實時處理能力，節約成本。
分享友人
分享到 Line

分享到臉書