More 3G Rumors...

[CBRfanatic]

Originally Posted by itsabouttime

So, is 3G as fast as Wifi? or does it come close?

The data speed of 3G is determined based on a combination of factors including the chip rate, channel structure, power control, and synchronization.

An example of calculating the theoretical 3G data speed is as follows:

W-CDMA assigned code 400-500 Kpbs/code. 6 codes X 400 > 2Mbps (UMTS target for 3G data speed in fixed location)
Actual data speeds will vary in accordance with several factors including:

Number of users in cell/sector
Distance of user from cell
User is moving or stationary
Network operator capacity and network optimization requirements

1xEV-DO (Current 2.5G Edge) is a data-only solution, supporting a theoretical data speed of up to 2.457 Mbps

1xEV-DV is a data and voice solution, supporting a theoretical data speed of up to 3.072 Mbps

FOMA (3G Edge ?) has two operational modes, supporting a dedicated 64 Kbps connection or a 384 Kbps downlink/64 Kbps uplink best-effort connection.

TD-SCDMA can operate in 1.6 MHz or 5 MHz mode for 2 Mbps or 6 Mpbs respectively

[GADeputy]

Originally Posted by itsabouttime

So, is 3G as fast as Wifi? or does it come close?

I'm not sure how fast it's going to be on an iPhone but when I had 3G on my Motorola RAZR V3xx and I used the phone to get internet on my laptop it absolutely flew. It was almost as fast as my home DSL. It would be awesome to have on an iPhone.

[Indy]

Originally Posted by CBRfanatic

The data speed of 3G is determined based on a combination of factors including the chip rate, channel structure, power control, and synchronization.

An example of calculating the theoretical 3G data speed is as follows:

W-CDMA assigned code 400-500 Kpbs/code. 6 codes X 400 > 2Mbps (UMTS target for 3G data speed in fixed location)
Actual data speeds will vary in accordance with several factors including:

Number of users in cell/sector
Distance of user from cell
User is moving or stationary
Network operator capacity and network optimization requirements

1xEV-DO (Current 2.5G Edge) is a data-only solution, supporting a theoretical data speed of up to 2.457 Mbps

1xEV-DV is a data and voice solution, supporting a theoretical data speed of up to 3.072 Mbps

FOMA (3G Edge ?) has two operational modes, supporting a dedicated 64 Kbps connection or a 384 Kbps downlink/64 Kbps uplink best-effort connection.

TD-SCDMA can operate in 1.6 MHz or 5 MHz mode for 2 Mbps or 6 Mpbs respectively

Yea, that's what I said^, lol....j/k

[DUKEL]

Originally Posted by CBRfanatic

1xEV-DO (Current 2.5G Edge) is a data-only solution, supporting a theoretical data speed of up to 2.457 Mbps

This is incorrect. "1xEV-DO" is a cdma 3G technology(verizon,sprint) while "2.5G Edge" is gsm.(at&t, tmobile)