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ͨܽƻiPhone3GгΪʤ
2009-08-17 15:18йֻԭߣ


ǰý屨ݺļָװͨ3GרiPhonęָڲʿ͸¶9·ݾͿʽۡǰý屨йͨ100500iPhone9ʽеϢıϡָϢնֻ3500Ԫҡ

ǽйͨ100ڲɹƻ̸ڼ

iPhoneһdzֻϮƻǿĹҵƷ񣬱밮ߵ׷ܹͨɹ룬Ŀǰͨ˵Ӧһáֵĵҵ鵱УͨƱԡƶҵ棬CDMAҵ֮ӵ4.5ûƶøڹҵ棬ͨͨӵ2ڶûĵԶΨһܹ˸еοǣͨWCDMAӦΪ㷺Ϊ3Gա

ȻͨWCDMAգζռ˾ԵľơйƶTD-SCDMAҹ׼ߵŴƶӵ߶˵ƶûԴЩͨȱٵġйŵҵͻԴ˵ҲǸ߶˿ͻЩҲͨȱٵġңĿǰйŵ3Gҵ񲼾ַdz㣬ڹڵӦ÷Χ󡣳˼֮⣬йͨȱƺͿͻԴƶŵĽ

Ҫ3Gʱսʤƶţٵأֻͨһѡ񡪡նˡ˵3GҵУն֧3GҵҵɹġȣǾ֧ŲTDǹ׼ʱƶһҪչWCDMA⳧̶ӣûж׼CDMA2000ͺյ3G׼ն豸TDҪһЩWCDMAȫӦ÷Χļն豸Ŀѡࡣ

ȫϲն豸iPhoneĪƶΪiPhoneƻĺתȳOPhoneֻiPhoneһһƣûлˡͨiPhoneĺͨ˵˷dzϣͨϣiPhoneġħƶ߶˿ͻԴǣiPhoneô

òϣiPhoneȷʵˣΪܹ°iPhoneƻ̵ſǮ㹻˵ǣййôȻй߾ԲôΪ˵ȵһµֻУϧͨﵩĵȴйֻڹʱͨĶӵȴҡšһʱ򵽵ֻôļ顣˵һĻ졣

iPhoneй棬ǰϢйiPhoneWIFIѾ˵ˣiPhoneͨ˵Ѿûжս塣ܶϲiPhoneߣdzƻƷƺ͹ҵƣiPhoneعܡΪںһܣWIFIܱ˸ɸiPhoneйĴվ飬iPhoneйûWIFIܣ20%IJѱʾܻṺ򡣵Ȼɲ²ijվԵ۵óĽйƶĶĻʹƽĶۣûWiFiܣĿǰ3G߶ʷ£ȷʵܶûС

ʵϣȡWiFiܣͨھĽǶȿǣ硢šƶдģWiFi裬йͨڳиǵֻiPhoneû᲻ʹԼ3GȥʹýӽѵWiFi

ˣзҲܷͨƶĸ߶ȫͨͻֻ̬ȡ

ڻվԵʣƶźŸ㷺ȶȻ3GʱѾʧȥ139-138֮ĺȻһݵҪȫͨתͨ߶˿ͻһ˵ԺճȽϸߣһֻ룬ҵϵӰ죬Ӱ൱ҪǹȥйͨӪCDMAƳC/G˫ģֻ˶οiPhoneûرɣ߶ûת

Ҳ˵ͨҪƶġרҵ߶ûЩûΪiPhoneWCDMAתһʵIT׷ˣ3GiPhoneȤҪעǣЩȺĴޣҲô׻ѡ񡣶ʵйϾȥֻĿǰгܶ๺ֻĸ߶ûֻǿֻϵ˹һĿǰֻܶ߶ûûֻշʼҲûWiFi/GPRS/CDMA 1XκһַʽҳûԼװչЩԭҪΪй½תڣƸļڷǼרҵʿĹʿŷвײռǺܴġ

Ŀǰ3Gͺ󣬶ںܶ˵DZȽǡڳʹ3GֻǺʹ2Gֻкأ绰ͷţǶûƵͨǶԷֻ֧֣Ҳǰ衣Ͳãù̶ͨ3Gҵй3G̣ѽչվĽҲҪϵʱ䣬йͨڼ500򲿣һܷȥߺǻɡ

ͨӪȻWCDMAȫ㷺磬ۼȽԡԶǾƣǻͨCDMAڼҲйƶ2GȥˣйʵûȻֻ2800ԶйͨGûǾͿ3GйδڵĽйͨCһз˻УԲܶࡣ

ͨ˵ƻ IPHONE()̫ϣʧҲ̫ࡣгϵ߲ܽܣǾǿ̸ͨӦģǾӪӪ̾иơն˺3GֻͨƶŵľԽԽԶ

ĵַ:http://www.cnonline.org/2009/article/11257.html

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