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GSM, GPRS, EDGE, CDMA, UMTS, HSDPA on the shelves - bug-code.com Q&A

GSM, GPRS, EDGE, CDMA, UMTS, HSDPA on the shelves

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All good day

Understand that these abbreviator a complete mess in the head. I would like to ask for your assistance to restore order and to put all on the shelves.

I understand that in the GSM network is used for data transmission GPRS/EDGE(2G) and UMTS(3G).

What technology is used in CDMA networks for video data?

Voice is transmitted via GSM and CDMA, or also via GPRS/EDGE(2G) and UMTS(3G)?

etc.
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2 Answers

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The first question is: 2G (GSM, GPRS, EDGE) and 3G (WCDMA, UMTS, HSPDA
To the second: In CDMA (Code Division Multiple Access), each node is allocated the entire spectrum all the time. CDMA uses special codes to identify connections. CDMA.
On the third, perhaps explain article here Generation of mobile telephony
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Thank you
\r
As I understand it:
\r
GSM: uses the GSM standard for voice and GPRS/EDGE and UMTS for data.
\r
CDMA uses EV-DO(3G) for data and voice.
\r
Correct if I'm wrong.
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