What are the basic difference between CDMA and GSM.?

Question

These both are the telecommunication technology.

Answer 1

In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). Cellular carriers including Sprint PCS, Cingular Wireless, Verizon and T-Mobile use one or the other. Understanding the difference between GSM and CDMA will allow you to choose a carrier that uses the preferable network technology for your needs.

The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other. That said, to the non-invested consumer who simply wants bottom line information to make a choice, the following considerations may be helpful.

Answer 2

CDMA: A technology for digital transmission of radio signals between, for example, a mobile telephone and a radio base station. In CDMA, a frequency is divided into a number of codes.

GSM: Global System for Mobile communications, based on TDMA technology, the most widely used digital mobile phone system and the de facto wireless telephone standard in Europe. Originally defined as a pan-European open standard for a digital cellular telephone network to support voice, data, text messaging and cross-border roaming. GSM is now one of the world's main 2G digital wireless standards.

Answer 3

GSM is the world standard and can be used in most countries around the world as long as you have an unlocked phone. CDMA is specific to US only, so any other country you wont be able to use your phone.

Answer 4

interesting in the differences are the speed they can reach, CDMA is broadband can reach speeds up to 100kb/s whereas GSM can not

Answer 5

cdma = best in my opinion when in low service area, no sim card [verizon, sprint]

gsm = uses sim card (can switch phones just by switching cards w/o going to the store) [cingular, t-mobile, etc]

Answer 6

http://www.wisegeek.com/what-is-the-difference-between-gsm-and-cdma.htm

Answer 7

advtg of cdma:better use of frequency by orthogonal seperation.
no sim.d.advtg:cell size isn't constant