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从理论上推导了 FDMA、TDMA、CDMA制式的容量表达式 ,计算了 3种典型系统 AMPS、GSM和 Q- CDMA的容量关系 ,分析比较不同系统的通信性能 ,指出了移动通信系统的发展趋势
The capacity expressions of FDMA, TDMA and CDMA systems are deduced theoretically. The capacity relationships of AMPS, GSM and Q-CDMA for three typical systems are calculated. The communication performance of different systems is analyzed and compared. The development trend of mobile communication systems is pointed out