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ڵλãֻг
:ұµ3Gĵ㽨
2005-01-22 03:1221;ñߣ
21;ñ

йǷƶͨ(3G)Ӫ㷺ۣҪйҪҪ쿪3Gг?ĿǰʱDzdz?֪йزųڹҰȫõĿǣΪҹTD-SCDMAδ죬ڲҪڿ3Gг

Ϊ3Gгij첻ȡҼ첻죬ȡгǷںͳ죬DZڵܷ޴ʵгҶԺձӡȵʵؿ켰ԹʵгоܵĿͽǣ3Gԣϼȳ죬гҲѳ죬Ҫ3GӪʵиӿŵߣץסӿ췢չĵг

Ӧֿ

ӹߵĽǶȿйгɷΪֲͬʵгһǾԡԡȫԵõгǹ90%ϣйг壻һǷǾԵġǿԡԻרľгڹƷʣֻռгļС

ΪһңرĴȷҪչԼļȷҰȫµ;Ӧ뷢չгֿʵвͬԭ򣬲ʮ޵򡣾ΪгİȫǶгķչΪʧչгҵģܲһӿ3Gгľߣܻᵼ¡֥鶪ϡܡȶϣּ񲻵֥顱

ʵϣչгһDZȻìܵġ໥ųġӲͬߵѡϿǿԳüⲿԺԣһԡԡӮIJҵߺͼߡӹʾгչԽ졢ԽԽ֣ԽڷչгǰߵļԺߵⲿԽǿԽ󣬺߼ijɱԽͣվԽСʹDzͬļ

ּ·߱뿼DzͬҵĹͷչ׶ΣΪߵķң似·ǡȾãáΪߵķչйң·ǡãá

ǼǷչйң˵Ĺҵܻûϵļ·ߣáзչüʮֳ졢ѾҵҳΪµľʱüӵȨгӦȿš

3Gгȫ򱳾

ҵĹҾտ3Gս͹ʱ

йҵķչй൱ɹ¼ߣʮʱ䣬ѸٳΪһûǼ˿гͲù¼ʹйҵͷҵʵʷԵĿԽҪķչ飬ҲڲõĽչΪĵгĸ;

ʮźǣȫƶͨ˳УйȴгΪߣؽǡѵ磬жйزžǷ񿪷3GгҡڲԥʵܵijЩ漯ŵĸźͷҵģɥʧһսԵķչѾպŷȷҺ͵Ҳйۺ̨ǵڹӡȡ

200482գȫʹCDMA2000WCDMA 3Gû1.28ڣȫ46ҵ104Ӫ̿չ3Gþ֡պҵչܿ죻ҹ̨ۡ3GҲȡ˽ϴչӡȣ2003ҲѾ7ҲCDMA20003GӪ̣׼ڷչйʵʩȫƶȡ

ݹʵITUͳݣ2002ӡȵƶ绰ռʽΪ1.22/ˣͬҹƶ绰ռѾﵽ16.09/ˣӡȵ13ȻĿǰӡ73GӪ̣ҹһҲûС

ҹڷչ3GгѾӡȣڵҵƶȴ·ͺӡȡйӡȹɾıȻӡҲɶйµľˣտ3GгѾڱС

3Gչ߽

3GгĻĿڽĵг֮һ

һĿ£3GгĿ꣺Ŀ꣬ʹҵΪҹҪԴ֮һǹ㣬3Gҵչ5ÿɴGDPԼ1800ԪԼռGDP1816ռGDPԼ1.2%ڶĿdzĿ꣬ҪʹITƷΪҹһ߼ڲƷĿǾҵȡÿ50100ҵҪΪµĴѧҵṩҵǹ㣬3Gÿ궼Ϊҹ80100ҵҵᣬԼռҵ11018ЧҹϾľҵѹǸЩܹõĸߵȽ߱Խϸʡ൱̶ȵϢͨѶ֪ʶĴѧǴ˾ҵ᣻ĸĿdzITⲿԺԣչԶ̽ԶҽơԶϢͼ顢ȣĹϢƽ̨

Ϊˣ½飺

һ쿪3GггԷֲʵʩһȷ3GգȷгϢƶշźг׼򣻵ڶ˳ӦȫżչͷںϵĴƣȫաǽ͸ƽԵĵгĻЧƶȰš

ڶʵйгԭͳԭ򡣽ҹгķչҲ3GгķչĻһַּ񡢶Ӫ̵IJ桢̭沢ơ;˳һû壬DZгֵľӪȨʵйгͳõߣҲЧʵߡֱ漰ҰȫϢȫٸԤָԹ涨̱ҵұȹԱ˽гЧʵļδ¼һʮ⡣ӾѧĽǶԵģ޹磬Ҳޱ߽磬ͬʱⲿԺԣ˭ʹʹ档ڼҾĵгУʵʾǿ˭ʹáЧʵʹµļһ˭췢ġ

ȷгĹϵҵһ͵ľԲҵҵ̺ǵг塣þǴĿǰȸԤġԽλ״̬˳תЩгʧЧгʧĹũձֺ蹵淶гггȷʼͨѶϢܲҪӲҵְְܡӾְ򹫹ְת䡣ίԱFCCģʽʵʱ(һ)Ϣҵҵίġʽӹĵżܲţмְܣйְܿתۺϲţйְܿתҵš

ģÿŵгٽҵѸٳɳ

Ҫرָǣھתڼ䣬һͻǹұ(government capture)ָҵijЩŻ߹߱漯Ӱ죬(ָҵЩ漯ŵķ²)ʹ乫ߡͶʡԴЩ漯ţȫ帣ΪۡйĸĸʵоῴijЩŻųν桢ҰȫΪڣӶʧЧʧЧγijҵʹռ¢гijЩ߾ΪijЩź漯ŵ߻ŻߡΪˣʹǵĹ߸͸ӹ㷺룬ܹѹҷڹҷչ

(ΪйѧԺ廪ѧоΣ廪ѧѧԺ)

ĵַ:http://www.cnonline.org/2005/article/6268.html

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