radio communications system 中文意思是什麼
radio communications system
解釋
無線電通信系統- 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。
- 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 ...
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Base station identity code. an attribute of a gsm ( global system for mobile communications ) cell which is a code allowing a distinction between local cells having the same radio frequency
基站識別碼。 gsm （全球移動通信系統）蜂窩小區的一個屬性，通過基站識別碼，不同的本地蜂窩小區可以使用相同的無線頻率。 -
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。 -
A digital trunked radio communications system with voice and data capabilities
備話音及數據功能的數碼集群無線電通訊系統； -
The simulcast or quasi - synchronous mode technique has been applied to the transit system s radio communications in order to ensure efficient use of the radio channels, and to adjust frequencies, phases, and delay times for better performance. however, in some overlapping areas, interference is still impossible to prevent
4 .捷運為了頻道更有效之運用，以同頻共播方式規設，調整頻率、相位及時差，然而重疊區有些地方仍然無法有效避免干擾。 -
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。 -
Technical specifications for private trunked mobile radio system for communications
交通專用集群移動通信系統技術體制 -
Transit and rail industries in many nations have already adopted the digital system as their regular radio communications system. in asia for example, the digital trunked radio system has already been adopted for system expansion or replacement by several organizations. these include the transit northeast line in singapore 1991, the mass transit system smrt in singapore 1998, the high speed railway in malaysia 2000, the guang - zhou subway in china 2000, the west line of guang - jiu railway in china 2000, the peking light railway in china 2001, and the new delhi transit system in india 2001
據了解現在各國新建捷運路網無線電系統規劃方式，有往數位干線式無線電系統發展之趨勢，並且已成各國捷運及鐵道工業無線電通信的主流標準，以亞洲為例：新加坡捷運東北線（ 1998年） 、新加坡高運量捷運smrt （ 1998年） 、馬來西亞快速鐵路（ 2000年） 、中國廣州地鐵（ 2000年） 、中國廣九鐵路西線（ 2000年） 、印度德里捷運（ 2001年） 、中國北京輕軌系統（ 2001年） .均已於系統擴建或新建時規劃採用數位干線式無線電系統。 -
From tomorrow ( december 9 ), the new territories regions will be the first to adopt an internet protocol ( ip ) terrestrial trunked radio ( tetra ) - based digital communications system
由明日（十二月九日）開始，新界總區的人員將率先採用以網際網路規約的地面集群無線電（ tetra ）為基礎的數碼通訊系統。
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