Briefly differentiate between CDMA and GSM technologies.
|
CDMA |
GSM |
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1)Code Division Multiple Access |
1) Global System for Mobile communication |
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2) storage type is internal memory |
2) storage type is SIM card |
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3) data transfer is EVDO/3G/4G/LTE |
3) data transfer is GPRS/E/3G/4G/LTE |
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4) It has a single frequency band(850 MHz) |
4) it has multiple frequency band(850/900/1800/1900 MHz) |
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5) It's not much easier to swap phones on CDMA networks |
5) It's much easier to swap phones on GSM networks |
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6)It uses code division multiplexing |
6) it uses time division multiplexing |
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7) There is one physical channel and a special code for every device in the coverage network. Using this code, the signal of the device is multiplexed, and the same physical channel is used to send the signal. |
7) Every cell has a corresponding network tower, which serves the mobile phones in that cellular area. |
Briefly describe the congestion control, slow start and fast retransmit mechanism.
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