ƻ赽ʢCDMAг
2008-11-10 00:34йֻԭ
һȱCDMAйӪֿȡΪйƶйšйֱͨӪTDCDMAWCDMA3G磬ĿǰĿƶTDٲά裬ͨWCDMẠΨһľеŵCDMA
йŽCDMAԤ3ǰֻɹŹȥͨCӪȻڣն˳̳࣬Ӫ̹ӣԼCķչйŶCĸٷչƶܷı䳧̵ĹעȴԶġ
ܹעľˣGSMƳMTKоƬϽ棬ʹøն˳̲ԼȥԻʱǮͿõһӽʡʱʡʡǮ
2008죬ȫԽΣķزгμⲨҵĸ棬ͶʻԹ˲Ͼ˦ͱչ
Ŀǰй½̨廹ƽһʢƽCDMAгƷԴ˱ֳĬ
ƿͨչʢVIACDMAоƬҵCDMAгȥ꽫AnalogDevicesInc.ADI֮һĿȻVIACDMAҵ
MTKȲƱʾ20081-9ӪΪ692.93̨ңͬ16.34%ǰӪΪ̨416.96Ԫͬ25.1%Ȼ߷羰ãȫԾ˥˵Ӱ»˾˵ĸ
ԭܼƵķѾԽԽ뵽гй½νɽկҵеĹֻҵٵضMTKƷΪˡ룬ܹȥҵơ
3GгͬʱѺTD-SCDMAWCDMAֻICWCDMAƷԤԿͻ۽ڵΪWCDMAŷƵĹڵؿ3GδWCDMAֻICҲڵۡ
ǣĵҵƶTD-SCDMAͨWCDMAйŵCDMA2000Լķչռ䣬ȴر̸CDMAѡ˳Ĭ
Ȼҵе˵չʢCDMAоƬҵٴȥ겢ADIĺϷΪ2007꣬ʢCDMAоƬֻͨմǴƷѽͨļģﵽʮ̨
鷽ʢCDMAоƬΪһιͨר⣬ΪϣҵֻṩԵͳɱIJƷܵٹֻҵǰֻеƼCECT棬ʽʢƳCDMAֻ
ʵϣ2006꣬δڹGSMֻгγԭ֮ƵMTKѾʢ˴˴һʱʢ⽫ͶʵCDMAƵƬƼVIATelecomMTK߾µؾʢ顣ݳƣԭڵʱCDMAֻΪĿͻ϶࣬ƹй½гص㣡
ȻָδCDMACDMA2000һйصƶг棬һԹߡCDMA棬йĿǰսȻԼвɹΪطȻͨԭеģʽɵĽǣνɽկѽ뼯ɣʽCDMAгԥҪأڵȴȴйŷչCDMAIJ֮ж
йŽCDMAԤ3ǰֻɹŹȥͨCӪȻڣն˳̳࣬Ӫ̹ӣԼCķչйŶCĸٷչƶܷı䳧̵ĹעȴԶġ
ܹעľˣGSMƳMTKоƬϽ棬ʹøն˳̲ԼȥԻʱǮͿõһӽʡʱʡʡǮ
2008죬ȫԽΣķزгμⲨҵĸ棬ͶʻԹ˲Ͼ˦ͱչ
Ŀǰй½̨廹ƽһʢƽCDMAгƷԴ˱ֳĬ
ƿͨչʢVIACDMAоƬҵCDMAгȥ꽫AnalogDevicesInc.ADI֮һĿȻVIACDMAҵ
MTKȲƱʾ20081-9ӪΪ692.93̨ңͬ16.34%ǰӪΪ̨416.96Ԫͬ25.1%Ȼ߷羰ãȫԾ˥˵Ӱ»˾˵ĸ
ԭܼƵķѾԽԽ뵽гй½νɽկҵеĹֻҵٵضMTKƷΪˡ룬ܹȥҵơ
3GгͬʱѺTD-SCDMAWCDMAֻICWCDMAƷԤԿͻ۽ڵΪWCDMAŷƵĹڵؿ3GδWCDMAֻICҲڵۡ
ǣĵҵƶTD-SCDMAͨWCDMAйŵCDMA2000Լķչռ䣬ȴر̸CDMAѡ˳Ĭ
Ȼҵе˵չʢCDMAоƬҵٴȥ겢ADIĺϷΪ2007꣬ʢCDMAоƬֻͨմǴƷѽͨļģﵽʮ̨
鷽ʢCDMAоƬΪһιͨר⣬ΪϣҵֻṩԵͳɱIJƷܵٹֻҵǰֻеƼCECT棬ʽʢƳCDMAֻ
ʵϣ2006꣬δڹGSMֻгγԭ֮ƵMTKѾʢ˴˴һʱʢ⽫ͶʵCDMAƵƬƼVIATelecomMTK߾µؾʢ顣ݳƣԭڵʱCDMAֻΪĿͻ϶࣬ƹй½гص㣡
ȻָδCDMACDMA2000һйصƶг棬һԹߡCDMA棬йĿǰսȻԼвɹΪطȻͨԭеģʽɵĽǣνɽկѽ뼯ɣʽCDMAгԥҪأڵȴȴйŷչCDMAIJ֮ж
Ŀǰ3G緽棬TD⣬ȻĿǰȷǵCDMA2000ȻͨWCDMAΪͨĹ滮3WCDMAû20%ɳ2000
ǶCDMA2000WCDMAרĿǰ㣬չʢCDMAƷߣƽٵؽгͬʱרš
ĸ±ڣȥCDMAͨӪ²Ӫ̶ƺͼɵķʽַʽһıɱɽկķʽɽկӵеļ۸Ӫ̵бûκʤĿܡ
⣬3GʱֻΪںϵնIphoneGoogleHTCG1ԼWinCEںWindowsMobileϵͳֻ֤Ȼȥ2Gʱֻܷš绰աMP3ֻѾӦˡΪûṩȫܶͼ۵Ķýֻ־߱աֵֹֻܵ۸ֻҪ300-800Ԫ
ڵ3GӦðֻӦãWWWҳIM졢ƵͨýƵۿGPSE-Mailܵƶ֤ȯ칫Ӧá
3GʱȻҪһϵͳƽ̨ϵͳƽ̨øԻʵֿͻࡢiPhoneGoogle顪ṩһƽ̨
ǿԿͬһоƬӲϵͳϵͳӦȫһͳͬʻģӮгģʽܵսϾŵϵͳǷҪģ
3GƵȷʵǸ߶ȵͬʻô۴ӼϻDz컯Ի棬ܷи߶гĹʾͷͺܳ⡣ƻֻܹõͶֻгһгĿǰ3Gг
ԣδƺȥδӣһйͨûйڶ̶ֻĵ⡣
ĵַ:http://www.cnonline.org/2008/article/10957.html