Uplink equivalent space - time multiuser detection for multicarrier code - division multiple access systems 系統盲空時信道估計及多用戶檢測
This paper discusses the work that we have done about the ( cd ) 2ma ( chaotic digital code - division multiple access ) communication system , whose performance is desirable 本文論述了我們在研究性能優良的混沌數字碼分多址通信系統方面所做的工作。
Spread spectrum communication takes an important part in military communication and in civil communication . especially in recent years , code - division multiple access ( cdma ) system based on spread spectrum communication is widely used in mobile communication 擴頻通信在軍事通信和民用通信中都具有重要的意義,特別是近幾年來,以擴頻通信為基礎的cdma通信系統在移動通信中得以廣泛應用。
On the other hand , cdma ( code - division multiple access ) communication system has been widely considered as the mainstream of 3g communication system , because it has the good qualities such as high utilization ratio of frequency band , low transmission power , powerful anti - multiple path falling and flexible capacity 另一方面, cdma通信系統以其高頻譜利用率、低發射功率、強抗多徑衰落特性、軟容量等優點,已被廣泛認為是第三代移動通信系統的主流。