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ڵλãֻг
ۿ3G翪ͨ ֻȫ
2006-03-01 04:26йֻԭߣ
ÿվԡֻۡ˱ѧۿ3GԤԡ


3Gôֻ˭ܻ˭ܻ⣬Ǹ֮ѡרҡʵѧϢҵ뷢չоۿڽܡÿվšɷʱԹֻۡʾͬ׳ȫۡ

ۿýһĹ۵㣬޳ɽڷ3GաΪ3GաͶ3GӪ3Gֻҵ޷ֲʧڸ·3GշָտɴʱۿԼֳƣĿǰ3GյķŻǸδ֪

ۿ޳СҵԪӲɱĹ۵㣬Ϊܹ3Gɱ2G¡߶3GܲϿɡȻСггԽС֮ľͻԽ󡣡ڶ೧һС⣬ûе⣬ȻۿʾȻ2GгôС3GֻԺڳɱӡгٵ£ʲô׬Ǯ

ǰΪ3GֻǹֻһΡԽ𡱻ᣬۿΪġԽ𡯣ġͶۿʾЩͨ3GŤΪӯĵij̣綪롣

зȨۿΪйû3G3GйҲûгһ֣3Gн2ʱ䣬Ŀǰ200û

ֻҵһ3Gʱն̽С㡱

ݹֻгֻն˳20Ҿ㹻ˡŵǡĦǡLGĴռ75%ҵķݶʣºСңڳ10ҿܶˡգϹʰ뵼ҵܾ¶ԡÿվšֹֻ̡֧ۡ

ΪֻҪĴԪ(ԴԴԪͽṹ㲿)ĺļ϶ڹ⳧Уڳ̴໹ڡ״̬Ի(Baseband)оƬƵ(RF)оƬ(Melody)оƬFlash MemoryICΪԴռֻ25%-30%ӲзɱǹڳʵֵĺļƵоƬֻRFMDǵ4ҹ⹫˾߱ȻȥҹƳһЩӵ֪ʶȨպļֻоƬͻйֻҵлоľ棬ЩֻоƬδʵдģڳ̵IJҵǹ⳧̹

ֻǵױ˺ԵԪȻֻռӲɱ5%-6%ıȻܸߡ¾˵ֻǻΡԲκ͵ƵȿƲ۵ԪԽԽܣĿǰڳ̻û3GʱֻѵӻĹܻᱻ󣬻ɫ󡢴СĥкܸҪ󣬰洦Ϳרγ˺ܸߵĽżڶڳ޷󼰡

Ȼڳ̿ѡԪͼ򣬵DZ3ʵ⡣ȣҪ߰ijɱۣؽֻΣҪԪƺģƴװ͡ԭװԭ䡱ȻϽǿ⣻󣬼ܹӹ⳧ﹺȽҲҪ6ҡֻҵʱɱǺܴġһ˵6ʱ䣬˾ѽ׬ߣڳֻܡʣµĹͷ

Ϲͨҵܾʾֻг֡С㡱󡣡3GշԺֻҵںܴΪ3GҵһһЩֻն˲̱̭⡣

ʾڹû3GĿǰѯרҡֻԪṩ̡Ӫ̡豸̡ն˳SPCPֵֻ̣ҪӪ̺豸ǿʵʵѡ ÿվ

ֻ

ܷгʵҪǷΪ3G׼Ƿ㹻ȫ漼ΪDZڹûߣгٴҲ䲻󡣡գͨſƼ()޹˾Ӫܾÿվšʾйӭ3GԪƺѳɶ֣컯ʤؼ

˵ӸϿܷӦ3GʱĿͻǸڣ3GʱĿͻ󱳺ԼΪ֧šԲ컯ƷΪӪΪġ

Ŀǰ3GҪרͨǩȫûԪЭ顱ȨȰCDMA20001X/1xEV-DOרҲWCDMA/UMTSػר3GзѼWCDMACDMA2000׼

ܾӢʾģֻһֱǵƣڴȵCDMA̺͹Ӧ̸ͨƶͨͶģ3GֻйȫIJ𡣡

ڼҵľУ컯ֻгᡣ3Gڣ˫ģģֻռλһΪϣеĺԴһ棬ܶϣʹ3GĸƵ绰ֵȡ

˵3GʱֻҵǾ޴ֻҪͻƣٵⲻ2Gʱ٣ܷץסһ϶ŵ ÿվ

3G ҹֻҵӰ

2006ҹƶͨ3GĹʱڡֻҵϡֻıԼº׼ֻҵ룬Ӱҹֻҵķչ

Ϣҵ˾йظ27ս˵20063GĽ裬ʹƶͨŲҵֽӭٷչڡͬʱ3GʱµϷʹֻƶӪ̡豸Ӧ̡ṩ̡ڷ̵̡߽ȵϵΪܡΪֻľһҪָ꣬ǾǶԴⷽ棬Ʒֻнϴơ

ƶӪ̵Ĺģɹ۽ݱΪһ֧Ҫ۷ʽ3Gʱڵֻģʽ̱仯йƶйͨΪƹҵ񣬼ǿҵеĵλǿûϵͬʱΪӦµƶӪֻ̣򡣶½ƶӪѸٷչûѹҲȡйͨCDMAڵIJԣͨն˲ֻŻչûΪֻҵ»

ĵַ:http://www.cnonline.org/2006/article/8506.html

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