GSM/CDMA

1. CELL and Sector with multiple frequency / CDMA single

frequency as carrier {users are get identifies by codes}

2. used TDMA and FDMA for Accesing /CDMA uses CDMA method

3. GSM is intial 2G technology with intial voice rate of

9.6kbps/same with 14.4kbps

4.GSM emerges into WCDMA/cdma emerges into cdma 2000

5. power control in acces method is comparitively not

efficient (when compare to CDMA)/ cdma as PLL(phase locked

loops for power transmission) better

6.call hand off and network hand off is not smoother in

GSM/ CDMA follows soft handoff and handling call hence more

efficient

7. GSM use less bandwidth and more power comparitively /

CDMA uses less bandwidth and more power

8.cost wise for opeartor GSM is less costlier , but

efficiency wise CDMA is better