| Which Technology is Better: GSM or CDMA? |
|
|
$ Check REAL-TIME pricing for BlackBerry 8520 Black unlocked GSM Bar Phone with Full Qwerty Keyboard - Retail $ |
|
|
|
|
|
| Glossary |
AMPS: stands for Advanced Mobile Phone Service. Analog cell system.
TDMA: stands for Time Division Multiple Access. It works by dividing the spectrum into frequency channels and each user uses each channel for a specific time, to avoid interference.
CDMA 1XRTT: Second generation technology (2.5G, actually) which allows data transfers up to 144 Kbps.
EDGE: stands for Enhanced Data Rates for Global Evolution. Technology promoted by GSM operators. Before migrating to WCDMA, EDGE will allow third generation data and voice access with 384 kbps transfer rate.
EV-DO: Third generation (3G) from CDMA 1xEV-DO technology. "EV" comes from and "DO" from data-only. It uses a second channel, of 1.25 MHz, exclusively for data transmission. Some countries are already running this standard. In the USA, Verizon and Sprint started this technology in 2004. This tecnology allows hi-speed Internet access (2.4 Mbps) using the cell phone or using a wireless connection from a laptop or PDA.
EV-DV: Evolution of EV-DO, but still under development. "DV" comes from data-and-voice. It uses the same channel for trasmiting data and voice. The transfer rate can reach 5.2 Mbps.
WCDMA: Wideband CDMA. Third generation technology that will be adopted by GSM operators. Its European version is known as UMTS (Universal Mobile Telecommunications System). It can reach transfer rates up to 2 Mbps. |
| Pages (2): « 1 [2] |
| Print Version | Send to Friend |
|
Bookmark Article
| Comments (0)
|
|
Recommended Deal |
 | Kingston V-Series 64GB Solid State Drive for Notebooks w/ data transfer kit and other Drives at CDW.com SNV125-S2BN/64GB
|
|
 Latest News |
November 6, 2009 - 3:07 PM PST |
November 5, 2009 - 3:49 PM PST |
November 5, 2009 - 3:47 PM PST |
November 5, 2009 - 3:42 PM PST |
November 5, 2009 - 3:38 PM PST |
November 5, 2009 - 3:36 PM PST |
November 3, 2009 - 8:14 PM PST |
November 3, 2009 - 7:57 PM PST |
November 3, 2009 - 7:51 PM PST |
November 2, 2009 - 6:05 PM PST |
| .:: More News ::. |
|
| Latest Content |
|
|
| Our Most Popular Articles |
1,070,836 views
|
695,221 views
|
671,442 views
|
585,842 views
|
555,977 views
|
554,123 views
|
485,815 views
|
474,861 views
|
389,400 views
|
336,571 views
|
|
| Latest Threads in Our Forums |
by shadixmax |
by ftomsuk |
by cchjde |
by delta32 |
by Desert Fox |
by sam_wade07 |
by fjs559 |
by Hardware Secrets Team |
by Merman |
by Olle P |
| .:: Visit Our Forums ::. |
|
|
