Global System for Mobile Communication

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1.It is TDMA(time division multiple access) FDMA(frequency division multiple access)technology.

2.The initial coverage area for each cell is greatly offered by link budget.(how much loss(db)can be tolerated over the air link between the phone & base station).

3.It is having hard hand off.(break before make).

4.It cover less cell radius.

5.GSM claim 3/9 reuse pattern(theree sector base station)frequency reuse equal 9)with the use frequency hopping,it only reduces the variance of C,I doesn’t improve C/I).

6.It is more expansive.

7.GSM suffers form the band width (B.W) limitation imposed by TDMA design.(time division multiple access).

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