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題名 | IMT-2000衛星通信發展趨勢分析=The Analysis of IMT-2000 Satellite Communication Developing Trend |
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作者姓名(中文) | 黃秀美; 陳志明; | 書刊名 | 電信研究 |
卷期 | 29:4 1999.08[民88.08] |
頁次 | 頁459-474 |
分類號 | 448.8 |
關鍵詞 | 分碼多重接取技術; 分時多重接取技術; 衛星固定業務; 衛星行動務; 公元2000年後, 全球第三代無線通信系; IMT-2000; International mobile telecommunication after year 2000; CDNA; Code division multiple access; TDMA; Time division multiple access; FSS; Fixed-satellite service; MSS; Mobile-satellite service; |
語文 | 中文(Chinese) |
中文摘要 | 第三代無線通訊系統起初被命名為未來陸地上無線通信系統,但因其繞舌且不易 記,而後改其名為 IMT-2000。2000 除了包含開始提供服務時間外,也包含規劃使用頻段之 涵義。 IMT-2000 第三代無線通信系統將提供用戶多種無線技取管道來連結電信網路服務( 如 PSTN/ISDN )。同時,IMT-2000 第三代無線通信系統的提出,主要是提供全球無線通信 系統一個共通的標準。藉由此標準的提出,除了可以整合現今各大行動通信系統互不相容而 無法連接通信的缺點之外,衛星網路和陸地網路介面的整合( Integrated ),相同功能的 共享再利用以及行動管理系統的共用, 更可提高無線通信的品質( Quality )以及服務涵 蓋範圍的連續性( Continuity of Coverage )繼而達到全球漫遊服務的提供。其中衛星於 第三代無線通信系統所扮演的角色亦為舉足輕重。 如此,IMT-2000 第三代無線通信系統將 提供無遠弗屆的全球通信目標。 |
英文摘要 | IMT-2000, Which were called Future Public Land Mobile Telecommunications Systems (FPLMTS) at the beginning, are third generation mobile systems which are scheduled to start service around the year 2000 subject to market considerations. They will provide access, by means of one or more radio links, to a wide range of telecommunication services supported by the fixed telecommunication networks (e.g. PSTN/ISDN), and to other services which are specific to mobile users. However the integrated terrestrial and satellite components of IMT-2000 are complementary in terms of service provision. The terrestrial component provides, economically, high quality telecommunication services typically to areas of very high user densities. The satellite component provides users with quality telecommunication services primarily on a virtually global coverage basis, and is most economic outside those areas covered by the terrestrial component. Additionally to providing this global coverage, the satellite component may, in more densely populated areas, precede and encourage later coverage by the terrestrial component. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。