1g 2g 3g 4g wiki

History of mobile phones - Wikipedia, the free encyclopedia 期末考要到了!我跟你說,螢光筆畫的都是重點!From Wikipedia, the free encyclopedia ... networks – 1G; 6 Digital cellular networks – 2G; 7 Mobile broadband data - 3G; 8 Native IP networks – 4G ..... The first two commercially available technologies billed as 4G were the WiMAX standard ......

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1G - Wikipedia, the free encyclopedia 原來賈伯斯的肖像權早就賣給四驅車!The main difference between the two mobile telephone systems (1G and 2G), is that the radio signals used by 1G networks are analog, while 2G networks are ......

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2G - Wikipedia, the free encyclopedia   And I will always love you!2G has been superseded by newer technologies such as 2.5G, 2.75G, 3G, and 4G; however, 2G networks are still used in many parts of the world....

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5G - Wikipedia, the free encyclopedia 不管到哪裡還是不忘軍人的正步! 齊步走!一二一二一二一!Spectral efficiency should be significantly enhanced compared to 4G. ... channel (1G up to 30 kHz, 2G up to 200 kHz, 3G up to 20 MHz, and 4G up to 100 MHz), ......

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3G - Wikipedia, the free encyclopedia 這蛋糕,騙很大!The first 3G networks were introduced in 1998 and fourth generation "4G" networks in ... EDGE, a revision by the 3GPP organization to the older 2G GSM based ......

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4G - Wikipedia, the free encyclopedia 老婆!再撐著點!只要再五元我們就可以回火星了!3G and 4G equipment made for other continents are not always compatible, .... since the first move from 1981 analogue (1G) to digital (2G) transmission in 1992....

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