GSM vs CDMA

Topic : gsM VS CDMA
NAME : Md. Fahad Jahan 131-19-1472
Hanif Sharif 132-19-1491
Md. Mehedi Hassan 131-19-1462
Section : ETE (Evening)
Daffodil International University




CDMA: Advantages
One of the greatest things about CDMA is that the cost of calls is cheaper than in GSM.
As of now the call quality is better than GSM.
The phone calls are more secured because of the spread spectrum.
Disadvantages
There is no availability of variety of handsets in CDMA as in case of GSM for customers.
They are incompatible with GSM handsets.

GSM Vs cdma
conclusion
In conclusion, GSM undoubtedly wins the network race, as it score more than CDMA in most departments. Still, one would definitely prefer to have a single global standard for wireless telecommunication. This would probably result in some kind of combination of CDMA and GSM networks in the near future.

Disadvantages

The per-unit charge on roaming calls is higher in GSM than in CDMA.
Calls made through GSM mobiles can be tampered.
If the SIM gets lost, one can lose all the data, if the same is not saved in the phone.

Thank You
Made by md. fahad jahan jupiter


Spectrum

Mobile communication uses Radio Frequency (RF)

GSM

Time Division Multiple Access Based Technology
200kHz bandwidth per carrier
Deployed in reuse pattern 3/9, 4/12, 7/21
Available operating frequency 900, 1800, 1900 MHz
Using SIM Card

CDMA

Code Division Multiple Access Based Technology
1.25 MHz bandwidth per carrier
Reuse factor 1
Available operating frequency 450, 800, 1900 MHz
Using RUIM Card

GSM : Advantages
The quality of calling in GSM is better and also better secured than CDMA.
A number of value-added services such as GPRS are making GSM a perfect choice.
The consumption of power is less in GSM mobiles.
With the tri-band GSM, one can use the phone anywhere around the world.

CDMA Technology: TDMA
CDMA is a "spread spectrum" technology.
Each mobile station has a unique digital code.

GSM Technology: FDMA
Transmission over Radio Frequency (800MHz – 1900MHz)
Frequency Division Multiple Access

CH 3
CH 4







Frequency
Time
Power

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