Which is better Data Technology? - CDMA 1X OR GSM GPRS/Edge

[VizagVsp 5]

Speed Standards:

CDMA 1X - 153.6Kbps (800Mhz)

GSM GPRS - 80Kbps (900/1800Mhz)

GSM EDGE - 236.8Kbps (900/1800Mhz)

In Real Environment (India Region)

Average Speeds:

CDMA 1X - 120~140Kbps

GSM GPRS - 20~60Kbps

GSM EDGE - 96~120Kbps

CDMA 1X is Wise Choice due it's Coverage, Data Quality, Felxibility, Response Time and Spectrum Efficiency.

CDMA is Code Division Multiple Access which means each customer is represented with an code in the Network. Without any Interface the Network will be in direct access with the user device (Mobile/Data Card). Which means your device is in continous touch with Base Station Tower in Your Area inrespect with other users on the network. When ever you want the access to data connectivity, then you will have instantaneous Access without routing with other devices. That's Major Advantage of CDMA.

While Accessing the Data, Device will be continous connectivity with the network without a Single Packet Loss. Which Results in More Response Time from Web Servers. CDMA 1X Coverage ranges upto 12Km Radii. So you could get the Good Signal upto 7Kms Radii. So you get Better Coverage and Signal, Whether in Urban/Sub-Urban/Rural it doen't matter much unelse in due obstacles (Hills/Terrain/Forest/High Density concrete Walls). Even you have High Number of Users Accessing in your Area the Speed doesn't Distribute among users. So each user have the same required bandwidth of 140Kbps.

GSM GPRS/EDGE Networks Need More Time (0~12Secs) to Choose the Strongest base station tower in your usage area and connects to the strongest signal strength Base Station Tower. While Testing in real environment the network had experienced packet loss during data Access. Which results in Low Connectivity with the Web Servers as well as the Network. The Bandwidth is Automatically Distributed among users in an area when the users are beyound Base Station Capacity. GSM Devices (Mobile/Data Card) do not have direct touch with network or base Station tower. They Connect to Network when ever a user Switch the Data ON. GSM Base Station Tower Coverage ranges upto 3Km Radii and Good Signal upto 0.9Kms. So you get less coverage, if you use in sub-rban/rural areas.

[kshah 452]

3 GSM IN Ahmedabad is far better than EVDO (in terms of speed). However cdma data is any day better than GSM if we consider total coverage. Most GSM coverage is for EDGE and it is big time headache.