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ΪƳ׿3Gֻ
2004-02-27 16:08ߣ
ΪֻͺвⱾվǽٻΪ3GֻϢ

Ϣʿ߼ߣΪĵһ̨3GֻƷǰȻ

Ϊ˾򱾱֤ʵ˴Ϣ˽Ҳǹֻзĵһŷް3Gֻ

ݳǻΪзĵһ̨3Gֻŷ޵WCDMA׼˻Ѿڸɵһȫ3Gࡣ

ݲĿʿܣ3GֻĿǰܹͨҵڲС˽⣬3Gֻ˫ģ(WCDMAGSM)ģ֡

λʿ߼ߣ·ݻΪõ3Gֻģڽ°꣬ȽõΪȫ3Gһ֡

ǻΪȥֻն˺һɹΪƴɱȫƶͨǰصḶ́ѾΪ3GԽ40Ԫݳƣ껪Ϊ֮һз3GƷĿ

Ϊֻ·20023£NECºʳͨţ3Gֻзͼתãȥ¹Ӣʵݱ˵ĻWCDMA׼3Gֻƽ̨

ȥ£ΪƵƵ3GսҳнƶӪSUNDAY3G䣬ҳнİWCDMA 3GʽͶá

3GȻǻΪ2004صҵ񡣡Ϊŷ˵ʵϣWCDMA׼ϣΪ3G׼CDMA2000TDSCDMAҲí˾ΪӳһҺʹ˾רעTDSCDMAƷĿ

CDMA2000ԻΪ˵練ƣҵʿƣΪCDMA450ȫؿ̽˹׶˹ӡᡢԽϵңǡǡ̳CDMA2000ҵ˳ɵ3GƵΡ

ĵַ:http://www.cnonline.org/2004/article/3708.html
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