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Cell-phone Network Technologies: 3G

3G technology is the latest in mobile communications. 3G stands for "third generation" -- this makes analog cellular technology generation one and digital/PCS generation two. 3G technology is intended for the true multimedia cell phone -- typically called smartphones -- and features increased bandwidth and transfer rates to accommodate Web-based applications and phone-based audio and video files.

analog cell phone
Sony Ericsson V800 3G phone

3G comprises several cellular access technologies. The three most common ones as of 2005 are:

   CDMA2000 - based on 2G Code Division Multiple Access (see Cellular Access Technologies)

  WCDMA (UMTS) - Wideband Code Division Multiple Access

   TD-SCDMA - Time-division Synchronous Code-division Multiple Access

3G networks have potential transfer speeds of up to 3 Mbps (about 15 seconds to download a 3-minute MP3 song). For comparison, the fastest 2G phones can achieve up to 144Kbps (about 8 minutes to download a 3-minute song). 3G's high data rates are ideal for downloading information from the Internet and sending and receiving large, multimedia files. 3G phones are like mini-laptops and can accommodate broadband applications like video conferencing, receiving streaming video from the Web, sending and receiving faxes and instantly downloading e-mail messages with attachments.

Of course, none of this would be possible without those soaring towers that carry cell-phone signals from phone to phone.

3G is a cell phone network protocol. Click here to learn about network protocols
for Smartphones

Learn how to protect yourself from harmful radiation
emitted by your cell phone.
Click on the picture below.

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Protect Yourself Now!

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Research Center For Wireless Technology


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