spread spectrum radio 中文意思是什麼

spread spectrum radio 解釋
展頻無線電
  • spread : vt （spread）1 伸開，伸長（手臂等），展開，張開（帆等），打開（地圖等）；鋪開（氈子等），展寬，展...
  • spectrum : n. （pl. -tra ）1. 【物理學】譜，光譜；波譜；能譜，質譜。2. 【無線電】射頻頻譜；無線電（信號）頻譜。3. 【心理學】（眼睛的）余像；殘像。4. 〈轉義〉范圍，幅度；（連續的）系列。
  • 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。
  1. 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。
  2. This article will be discussed a kind shortwave section spread spectrum modulator based on software radio which will be used in maritime naval vessel communication

    本文將討論一種用於海上艦船通信的基於軟體無線電的短波段擴頻調制器。
  3. In this dissertation, researches on performance of variable spreading gain cdma with imperfect power control and uplink capacity analysis of limited maximal ratio combining macrodiversity in spread spectrum radio networks are carried out. the main originality in this paper can be summarized as below. 1

    本文主要內容涉及基礎研究和應用研究，其中包括： （ 1 ）進行了關于可變增益cdma （ vsg - cdma ）在非理想功率控制下的性能分析； （ 2 ）進行了關于宏分集無線網路cdma系統的功率控制和容量分析。
  4. Telecommunications - electromagnetic compatibility and radio spectrum matters - electromagnetic compatibility standard for radio equipment and services - part 23 : specific conditions for imt - 2000 cdma direct spread base station radio and ancillary equipment

    電信.電磁兼容性和射頻頻譜管理.無線電設備和業務電磁兼容性標準.第23部分: imt - 2000 cdma直接擴譜基地臺無線電設備和輔助設備的特定條件
  5. 2. uplink capacity analysis of limited maximal ratio combining macrodiversity in spread spectrum radio networks in this chapter, a more practical case of limited maximal ratio combining macrodiversity ( mmrc ), mobile ' s signal only received by a limited number of nearest base stations, in a cdma system was studied

    關于宏分集無線網路cdma系統的容量分析提出了一種更實際的分集受限的最大比率合成宏分集（ mmrc ） cdma模型，對移動臺的信號僅被最近有限個基站接收再合成的情形進行了研究。
  6. Ds / fh hybrid spread - spectrum communication system base on software radio is researched in theory. performance of the system is analyzed and evaluated in anti - jamming by software simulation. so it testify feasibility of the system

    本課題針對這方面作了詳細地討論，就基於軟體無線電技術的ds fh混合擴頻通信系統從理論方面進行了研究，通過模擬，對系統在抗干擾方面的性能作了分析，並進行了性能評估，從而驗證了系統的可行性。
  7. This paper brings forward the idea that we can combine tame spread - spectrum technology and software radio technology in one military communication system. such system is compatible, and it is difficult to be jammed

    本文提出了將軟擴頻技術和軟體無線電技術相結合在同一軍事通信系統中的觀點，使系統同時具有較強的抗干擾和較好的兼容性。
  8. We designed a wireless asymmetric physical layer link model with a direct sequence spread spectrum system as a transmitted reference. uplink and downlink are both one - way links connected by an ip tunneling. uplink is consisted with the narrowband radio data link of the warfighter information networks ( win )

    研究了無線非對稱鏈路，提出了一種用參考法直接序列擴頻（ dsss ）實現的無線非對稱數據傳輸的物理層鏈路模型：利用現有戰斗員信息網電臺的窄帶數據鏈作為上行通道，通過ip隧道技術保證單向鏈路的連通性。
  9. According to the ideology of software radio theory, the realization of intermediate frequency ( if ) digitalized direct sequence spread spectrum ( dsss ) receiver is one of the focuses in dsss communications study. it is of great value to deploy narrowband interference ( nbi ) suppression techniques in if digitalized dsss receiver for commercial and military applications

    根據中頻數字化這一軟體無線電思想實現擴頻接收機是目前擴頻通信研究的熱點，在中頻數字化擴頻接收機體系結構內研究窄帶干擾抑制技術具有重要的商業和軍事應用價值。
  10. Based on software radio technology practical spread spectrum communication construction of system and principle analysis

    基於軟體無線電技術的實用擴頻系統結構及原理分析
  11. Near field spread spectrum range algorithm based on software radio

    基於軟體無線電的近距離擴頻測距演算法
  12. Utra fdd en electromagnetic compatibility and radio spectrum matters - base stations, repeaters and user equipment for imt - 2000 third - generation cellular networks - part 2 : harmonized en for imt - 2000, cdma direct spread utra fdd covering essential requirements of article 3. 2 of the r tte directive v2. 2. 1

    電磁兼容性和無線電頻譜情況. imt - 2000第三代細胞網路用基站中繼器和用戶設備.第2部分:包括r tte指令3 . 2條款的基本要求的imt - 2000的cdma直接擴展
  13. To despread and demodulate the signal correctly in the spread spectrum system, the pn code phase of the receiver must be synchronized with that of the input signal precisely. multipath channel exists in the wireless environment for radio signal reflection by obstacles between transmitters and receivers

    在擴頻通信系統中，為正確解擴和解調接收到的擴頻信號，接收機的pn序列相位和接收信號的pn序列相位必須完全同步；同時移動無線環境中的傳輸信號總是被收發信機之間的許多障礙物所反射，從而產生多徑通道。
  14. This dissertion majored in dicussing the signal source and signal transmitting channel ’ s code and decoding of spectrum spread radio station under the concept of the software wirelss radio. the author ’ s main work and new ideas are listed blow : 1

    本文主要討論的是在軟體無線電的構架下討論和實現跳擴頻電臺的語音編解碼以及通道上的編碼和解碼的理論和實現。
  15. Accordingly, the interception and radio monitoring for spread spectrum communication have been of great research interests. and the chief task is to detect and separate the ds / cdma signals hidden in the noise and interference

    相應地，擴頻通信的電子對抗和民用無線電資源監管成為非常重要的研究課題，其中對噪聲和干擾中直擴碼分多址（ ds / cdma ）信號的盲檢測和分離是首要任務。
  16. Spread spectrum radio

    展頻無線電
  17. Design of a spread spectrum communication radio based on software radio

    一種基於軟體無線電的擴頻通信電臺設計
  18. Utra fdd en electromagnetic compatibility and radio spectrum matters - base stations, repeaters and user equipment for imt - 2000 third - generation cellular networks - part 3 : harmonized en for imt - 2000, cdma direct spread utra fdd covering essential requirements of article 3. 2 of the r tte directive v. 2. 2. 1

    電磁兼容性和無線電頻譜情況. imt - 2000第三代細胞網路用基站中繼器和用戶設備.第3部分:包括r tte指令3 . 2條款的基本要求的imt - 2000的cdma直接擴展
分享友人
分享到 Line

分享到臉書