narrowband cdma 中文意思是什麼
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Firstly this paper researches present mobile communication technique of enhancing system capacity, next further researches basic principles of tdma and cdma system. based on these researches a new scheme is proposed that let broadband code division multiple access ( b - cdma ) system overlay on an existing narrowband digital cellular system ( i. e. gsm )
本文首先研究了移動通信現有的擴容技術，其次深入研究了tdma系統和cdma系統的基本原理，在此基礎上提出了利用gsm與寬帶cdma系統同頻傳輸實現系統擴容的方案。 -
With the rapid development of mobile communication systems, the existing gsm and narrowband cdma cellular system cannot solve the contradiction between the limited frequency source and the increased mobile users
隨著移動通信的飛速發展，現有的gsm系統和窄帶cdma系統已無法緩解頻率資源有限與移動用戶急速增加的尖銳矛盾。 -
Narrowband cdma n - cdma
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