TOPIC : GSM VS CDMA

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

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 TECHNOLOGY: FDMA

Transmission over Radio Frequency (800MHz – 1900MHz)

Frequency Division Multiple AccessCH 3CH 4 Frequency

Time

Pow

er

CDMA TECHNOLOGY: TDMA

CDMA is a "spread spectrum" technology.

Each mobile station has a unique digital code.

SPECTRUM

Mobile communication uses Radio Frequency (RF)

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.

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.

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.

THANK YOU

MADE BY MD. FAHAD JAHAN JUPITER