GSM Vs CDMA Technology

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In cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). Some moving companies included are: Sprint PCS, Cingular Wireless, Verizon and T-Mobile among others. Understand the difference between GSM and CDMA will allow the consumer to choose a company that uses the most appropriate network technology needs.

The Asociacón GSM is an international organization founded in 1987 dedicated to providing, developing and overseeing the global standard for wireless GSM. CDMA is a 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 U.S., CDMA networks are moving in other parts of the world.

There are points on both sides that firmly believe their own GSM or CDMA architecture is superior to another brand. Consumers requiring more information lend as much interest to the investment that will make the following recommendations can be helpful.

Coverage: The most important factor is to get a service that is in areas where it is to use the phone. Seeing the maps of the competitors and coverage in your area, you will discover if it is GSM or CDMA service indicates that you need.

Data transfer rate: The development of technology in cell phones is very continuous and markings must meet the needs of the user who buys these brands, some progress would be the streaming video devices, podcast receivers and email devices electronic, speed is important for those who not only use the phone to make calls. CDMA has been traditionally faster than GSM, though both technologies continue to compete in this subject over the years. Both boast "3G" or third generation technologies.

EVDO, also known as CDMA2000, CDMA is the answer to the speed requirements of consumers who need it has a download speed of 2 megabits per second, although some reports indicate that reached speeds are around 300 -700 kilobits per second (kbps). This is comparable to DSL base. As of fall 2005, EVDO is deployed. But this device is not available for all phones, it requires a phone with CDMA2000 and ready reference.

GSM's answer is EDGE (Enhanced Data Rates for GSM Evolution), with data rates up to 384 kbps, with speeds reached 70 to 140 kbps. With the addition of technologies that are still in beta that will include UMTS (Universal Mobile Telephone Standard) and HSDPA (High Speed ​​Downlink Packet Access), speeds reportedly increase to about 275-380 kbps. This technology is also known as W-CDMA, but is not compatible with CDMA networks. For this purpose you must use a phone with EDGE technology.

In the case of EVDO, theoretical high traffic can degrade speed and performance, while the EDGE network is more susceptible to interference. Both require a central location within the signal range to get the best speeds, while the performance of the signal decreases with distance.