ֻ̣ѡ֮һ
2001-04-14 23:06˿Ƽ
ƶ绰ʮǰǻֻܴ۵ӾпգʱдΪֻСDzõ𣬶Ϣʱ٣ֱݵͨѶѾѰռҡ
ȣҼﻮһֻôھ֮ǰбҪһЩijʶ˽⣺
1.ʲôGSMCDMA
ǾGSMCDMAֻķ෨ǵݱ봫ȼ档Ϊͨûֻżס㣺GSMֻ磬90ͽйг罨걸վҪCDMAֻ࣬Ҳ˵ʹõĵ㣻CDMAݴ似£CDMAֻһ˵ҪͬεGSMֻͶгͨ罨GSMСк嶼ʹá
ѡGSMCDMAֻҪȡĸһλ۲۵ġƶûڸشôGSMǺʵѡһڱҲŲŲطôCDMAֻ
2.130133135
⼸ڼ˲֪йƶ绰ͷλ֮IJͬ130ͷĺζŸֻйͨ˾(ͨ)ṩ133135136137138139ΪǰλֻйŹ˾ṩͨŷҷ̱Ƚ϶ԣйŵĹģͨЩЧƣͨѺͷȽϱˣ˫¡
⣬Щûֻ9ͷ˵ֻйŵģźģźźȴƣģĿǰѾGSMCDMAΪӪģҪйƶͨŹ˾(й)ӪETASCģйƶͨŹ˾ӪAMPSģ(blackman)
ĵַ:http://www.cnonline.org/2001/article/1101.html
ȣҼﻮһֻôھ֮ǰбҪһЩijʶ˽⣺
1.ʲôGSMCDMA
ǾGSMCDMAֻķ෨ǵݱ봫ȼ档Ϊͨûֻżס㣺GSMֻ磬90ͽйг罨걸վҪCDMAֻ࣬Ҳ˵ʹõĵ㣻CDMAݴ似£CDMAֻһ˵ҪͬεGSMֻͶгͨ罨GSMСк嶼ʹá
ѡGSMCDMAֻҪȡĸһλ۲۵ġƶûڸشôGSMǺʵѡһڱҲŲŲطôCDMAֻ
2.130133135
⼸ڼ˲֪йƶ绰ͷλ֮IJͬ130ͷĺζŸֻйͨ˾(ͨ)ṩ133135136137138139ΪǰλֻйŹ˾ṩͨŷҷ̱Ƚ϶ԣйŵĹģͨЩЧƣͨѺͷȽϱˣ˫¡
⣬Щûֻ9ͷ˵ֻйŵģźģźźȴƣģĿǰѾGSMCDMAΪӪģҪйƶͨŹ˾(й)ӪETASCģйƶͨŹ˾ӪAMPSģ(blackman)
ĵַ:http://www.cnonline.org/2001/article/1101.html