ۿ3G翪ͨ ֻȫ
2006-03-01 04:26йֻԭ
ÿվԡֻۡ˱ѧۿ3GԤԡ
3Gôֻ˭ܻ˭ܻ⣬Ǹ֮ѡרҡʵѧϢҵ뷢չоۿڽܡÿվšɷʱԹֻۡʾͬ׳ȫۡ
ۿýһĹ۵㣬ɽڷ3GաΪ3GաͶ3GӪ3Gֻҵֲʧڸ·3GշָտɴʱۿԼֳƣĿǰ3GյķŻǸδ֪
ۿСҵԪӲɱĹ۵㣬Ϊܹ3Gɱ2G¡߶3GܲϿɡȻСггԽС֮ľͻԽڶ೧һС⣬ûе⣬ȻۿʾȻ2GгôС3GֻԺڳɱӡгٵ£ʲôǮ
ǰΪ3GֻǹֻһΡԽ𡱻ᣬۿΪġԽ𡯣ġͶۿʾЩͨ3GŤΪӯĵij̣綪롣
зȨۿΪйû3G3GйҲûгһ֣3Gн2ʱ䣬Ŀǰ200û
ֻҵһ3Gʱն̽С㡱
ݹֻгֻն˳20Ҿ㹻ˡŵǡĦǡLGĴռ75%ҵķݶʣºСңڳ10ҿܶˡգϹʰ뵼ҵܾ¶ԡÿվšֹֻ̡֧ۡ
ΪֻҪĴԪ(ԴԴԪͽṹ㲿)ĺļ϶ڹ⳧Уڳ̴ڡ״̬Ի(Baseband)оƬƵ(RF)оƬ(Melody)оƬFlash MemoryICΪԴռֻ25%-30%ӲзɱǹڳʵֵĺļƵоƬֻRFMDǵ4ҹ˾߱ȻȥҹƳһЩӵ֪ʶȨպļֻоƬͻйֻҵлоľ棬ЩֻоƬδʵдģڳ̵IJҵǹ⳧̹
ֻǵױ˺ԵԪȻֻռӲɱ5%-6%ıȻܸߡ¾˵ֻǻΡԲκ͵ƵȿƲ۵ԪԽԽܣĿǰڳ̻û3GʱֻѵӻĹܻᱻɫСĥкܸҪ洦Ϳרγ˺ܸߵĽżڶڳ
Ȼڳ̿ѡԪͼDZ3ʵ⡣ȣҪ߰ijɱۣؽֻΣҪԪƺģƴװ͡ԭװԭ䡱ȻϽǿ⣻ܹӹ⳧ﹺȽҲҪ6ҡֻҵʱɱǺܴġһ˵6ʱ䣬˾ѽߣڳֻܡʣµĹͷ
Ϲͨҵܾʾֻг֡С㡱3GշԺֻҵںܴΪ3GҵһһЩֻն˲̱̭⡣
ʾڹû3GĿǰѯרҡֻԪṩ̡Ӫ̡豸̡ն˳SPCPֵֻ̣ҪӪ̺豸ǿʵʵѡ ÿվ
ֻ
3Gôֻ˭ܻ˭ܻ⣬Ǹ֮ѡרҡʵѧϢҵ뷢չоۿڽܡÿվšɷʱԹֻۡʾͬ׳ȫۡ
ۿýһĹ۵㣬ɽڷ3GաΪ3GաͶ3GӪ3Gֻҵֲʧڸ·3GշָտɴʱۿԼֳƣĿǰ3GյķŻǸδ֪
ۿСҵԪӲɱĹ۵㣬Ϊܹ3Gɱ2G¡߶3GܲϿɡȻСггԽС֮ľͻԽڶ೧һС⣬ûе⣬ȻۿʾȻ2GгôС3GֻԺڳɱӡгٵ£ʲôǮ
ǰΪ3GֻǹֻһΡԽ𡱻ᣬۿΪġԽ𡯣ġͶۿʾЩͨ3GŤΪӯĵij̣綪롣
зȨۿΪйû3G3GйҲûгһ֣3Gн2ʱ䣬Ŀǰ200û
ֻҵһ3Gʱն̽С㡱
ݹֻгֻն˳20Ҿ㹻ˡŵǡĦǡLGĴռ75%ҵķݶʣºСңڳ10ҿܶˡգϹʰ뵼ҵܾ¶ԡÿվšֹֻ̡֧ۡ
ΪֻҪĴԪ(ԴԴԪͽṹ㲿)ĺļ϶ڹ⳧Уڳ̴ڡ״̬Ի(Baseband)оƬƵ(RF)оƬ(Melody)оƬFlash MemoryICΪԴռֻ25%-30%ӲзɱǹڳʵֵĺļƵоƬֻRFMDǵ4ҹ˾߱ȻȥҹƳһЩӵ֪ʶȨպļֻоƬͻйֻҵлоľ棬ЩֻоƬδʵдģڳ̵IJҵǹ⳧̹
ֻǵױ˺ԵԪȻֻռӲɱ5%-6%ıȻܸߡ¾˵ֻǻΡԲκ͵ƵȿƲ۵ԪԽԽܣĿǰڳ̻û3GʱֻѵӻĹܻᱻɫСĥкܸҪ洦Ϳרγ˺ܸߵĽżڶڳ
Ȼڳ̿ѡԪͼDZ3ʵ⡣ȣҪ߰ijɱۣؽֻΣҪԪƺģƴװ͡ԭװԭ䡱ȻϽǿ⣻ܹӹ⳧ﹺȽҲҪ6ҡֻҵʱɱǺܴġһ˵6ʱ䣬˾ѽߣڳֻܡʣµĹͷ
Ϲͨҵܾʾֻг֡С㡱3GշԺֻҵںܴΪ3GҵһһЩֻն˲̱̭⡣
ʾڹû3GĿǰѯרҡֻԪṩ̡Ӫ̡豸̡ն˳SPCPֵֻ̣ҪӪ̺豸ǿʵʵѡ ÿվ
ֻ
ܷгʵҪǷΪ3GǷ㹻ȫ漼ΪDZڹûߣгٴҲ䲻գͨſƼ()˾Ӫܾÿվšʾйӭ3GԪƺѳɶ֣컯ʤؼ
˵ӸϿܷӦ3GʱĿͻǸڣ3GʱĿͻԼΪ֧šԲ컯ƷΪӪΪġ
Ŀǰ3GҪרͨǩȫûԪЭ顱ȨȰCDMA20001X/1xEV-DOרҲWCDMA/UMTSػר3GзѼWCDMACDMA2000
ܾӢʾģֻһֱǵƣڴȵCDMA̺Ӧ̸ͨƶͨͶģ3GֻйȫIJ𡣡
ڼҵľУ컯ֻгᡣ3Gڣ˫ģģֻռλһΪϣеĺԴһ棬ܶϣʹ3GĸƵ绰ֵȡ
˵3GʱֻҵǾֻҪͻƣٵⲻ2Gʱ٣ܷץסһ϶ŵ ÿվ
3G ҹֻҵӰ
2006ҹƶͨ3GĹʱڡֻҵϡֻıԼºֻҵ룬Ӱҹֻҵķչ
Ϣҵ˾йظ27ս˵20063GĽ裬ʹƶͨŲҵֽӭٷչڡͬʱ3GʱµϷʹֻƶӪ̡豸Ӧ̡ṩ̡ڷ̵̡߽ȵϵΪܡΪֻľһҪָ꣬ǾǶԴⷽ棬Ʒֻнϴơ
ƶӪ̵Ĺģɹ۽ݱΪһ֧Ҫ۷ʽ3Gʱڵֻģʽ̱仯йƶйͨΪƹҵǿҵеĵλǿûϵͬʱΪӦµƶӪֻ̣½ƶӪѸٷչûѹҲȡйͨCDMAڵIJԣͨն˲ֻŻչûΪֻҵ»
ĵַ:http://www.cnonline.org/2006/article/8506.html