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Mar 08, 2003 03:03 PM 71240 Views
(Updated May 27, 2003 02:04 PM)

I Read the article by a fellow MS member,

It was an unbiased article documenting the pros of GSM. I just wanted to pour in my thoughts about CDMA. Being in telecom industry and having used both CDMA & GSM Based cell-phones, I thought it would be fitting to disclose the comparisons.


CDMA is a recent technology alright. But it had it's predecessors in FHSS which was widely used by the US Military till they de-classified the technology in late 80s when Qualcomm came up with a better and enhanced CDMA technology.


Logically CDMA had it's roots older than GSM as it was used in WWII, Cuban Missile Crisis et al. The technology was tested effectively in 1991 for cellular communications.

Hongkong was the first one to implement CDMA.

If you take the large wireless operators in US, most of them use the CDMA technology. Big firms such as Sprint, Verizon wireless et al support CDMA, while T-mobile and Cingular support GSM.

CDMA, comes up with


Increased security for wireless communications

Duplex conversations

increased efficiency that allows a large network to handle traffic effectively (better return for buck spent)

Better battery life for phones as low power consumption

Better capacity and reach,


This means that it has cons too.


No international roaming

Newer technology

proprietary technology

WCDMA will not be available in Europe/asia till 2005 while GSM successor GPRS is almost ready


<b>Right now, GSM is a clear winner with 5-1 usage demographics</b> If you wanna have a worldwide coverage, go with GSM for now.

I am a GSM phone holder for now.

Hope that was useful.

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