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ڵλãʱ
ͨѶ¸߿?
2004-04-29 15:25enetߣ


йͨѶ¸Ѿ6µʽӪҵʾ߶ȹעûηͨƳȫµֵƷƣܲͨѶߡԤĿ꣬»˵


ɵࡿ

Ѷ¸ߡһȫµ׼ƽ̨ҲͨרΪCDMA1XûƵҵCD-MA1XֻPDACDMA1Xһƶնˡ

ͨԳѶ¸ǡ25Gʵ3Gƽɣԣ˰Ϊ3GǰҹԤȡ

Ȼ3GҵԤݣ͵ó֮ƥӦãͨųѶ¸߿ṩƶ칫ƶƵƶͨƶƶӰԺҵʵЩҵУ۵޷ݣһǡֻCûͨCDMA 1X缴ʱտӽĿǡƶ顱ͨĿǰĻIPĹûͬʱ֧1500նٿ顣
Ѷ¸ߵ㣬̳е֮Ҫ۵£

һ֮ã

ָĿǰĵ㣬ҪֻϿӣҲһСʱ;УһСĿӿͷ绰һûˡ

صʹʱƶն˵ƿƶնҪֲ״̬ҵҪĶǵأɫĻʹڴṩӦõͬʱҲŴĵܡزҪ䣬Ҫߵܴ洢ҵʿһֱģеĵػ3GĺȡôѶ¸ߵӦֻж೤ʱ䣿

ӿ

ָֻҪСҪôϣһ⣬ֻӣ˷֮⣬Ҳûʲôŵˡ

ʵϣֻӣֻһȡʽѡ뿴칫ڼ䣬˭DZֻӣӼһΣͥͱݵķﶼвʵ磬˭ԸȡСʵֻϰ˲ƣҲһʼЩûͼʣֻƵӵ֣쳤վãǵ۾ܲˡƱܲ˵ʱǻѶ¸ṩĵӽĿ

ٸ

ָͨ߿ų153Kٶȣû2000ԪһſʽΪ6Kңٶܿ? ͬ⣬һλƶ豸̵Ĺʦ˵ƶGSMGPRSͨCDMA 1X磬㹻Ĵٶ֧߿ӣһMMSļҪӣ˵ˣǸٶȻøԶ

ġ˭ڸʱ֣

ָͨҵ3GĿĵΪʲô?ǰΣⶼûôĵø3GӦãйӪΪʲôϰЩʱְ?

ĿǰȻϢҵûз3GգͨѶ¸ṩӦȷʵ3Gҵһ⣬š뻥һֱΪΣںϰ࣬ͨġֻڸϵƽ

ǵɲûеһѪֱָҪ


ż ߲ʡ

Ѷ¸ߡҪλǸ߶ûȺԣȻγż

ն˭

ΪƹѶ¸ߣͨ״ζֻίдԹ˾רһֻCU928Ϥֻļ۸Լ8000ԪҡͨҲϣCU928ļ۸ֻͨҪߺܶ࣬ǣôߵļ۸񾿾ӮöûңؼǣĿǰΪͨṩն˵ֻдһңֻCU928һƷ֪Ʒ٣С۵ĿԾͺС۸Ӹ߲£ʱγɹģ

˵ˣ棬ͨûѾϵƣԤƻϰ꣬ͨҪ֮ƹ˫ģֻڣҪƳƵֻڵûûˡ˵ͨûЩĸ߶ûжԸͨڣüǧǮˮƯ棿

GCͨӦdzԹĿͷˡͨΪCDMAܱޣһʼֱָ߶ˣۼǧ֮󽵼ۣһµǧԪءͷCDMAʽ򣬱Ƶͨòȡߣֻû

ǰֻͨʲô취GCûӵֻ»Ǯȥ˫ģֻͬʱٻǮֻ֪Ѷ¸ߵӦҲӵһרõֻӦá˵䲻˵ĻǾԴʲôëʲôơϧ˰˵ӺûƱӣֻȥƣ

ĺܱˣ

ͨʱѶ˾³СʾĿǰշѱ׼ûöȷһ㣬һûоȷʵܱˡ

Ѷ¸ߵʷġܱˡ𣿻ͨı׼ɣѶ¸߸ûΪ50-60K/룬50K/м㣬û200Ԫ£3000MԼֻͨ17Сʱĵӣ£ͨüΪ0.05Ԫ/KÿҪ0.25Ԫ

԰ۣССֻĻϿ17СʱӣҪ200ԪԶԶߵӽĿշѱ׼ԲֻۣͨϿӣÿӶë壬ֱǴ֮ˡҪ֪ǰ£Dz£ͨԤʷֻƷѣշѣշѻͨ˵㣬ȫҪƾӵSPĿۡ

ûҲѾףѶ¸֮󣬼Ʒѷʽǡʱ++ۿĿʱշѣӣͨûжܹܵˣڸĹûԣѶ¸ߵķǿɼȻԼռ뷢չĹؼء

ϰ Խ

ȻѶ¸߽಻أңϰҲԼ䷢չ

һDZ׼

ҹƵ׼ûһͳһļ淶йͨ˶ΣȡƵļ׼ĿǰڹڵCDMAӪ̽ͨһңʱڻͨ⣬᲻ֻͨϰȻµӪ̽ҵͨûֻܿѶ¸ߣӪ̵ݷǴɷ羰

һݡ

Ϥͨ12ҵƵЭ飬ΪѶ¸ṩݣа̨4ס9סѶ̨BBCȡѶ¸6µʽͶãʱʷѽɵ̨SPƶͨ˵㡣ԤӵýƾǿҵаҪĽɫҿгڲ߻һýվнĿݷŵվʱͨûٽĿҪٷãͨܵ˼һǿԿ϶ģѶ¸ߡʱ++ۿĿʱշѷʽһûеɵġ

ĵַ:http://www.cnonline.org/2004/article/4060.html

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