GSM vs CDMA

Presented by Lt Cdr Aayush Verma

GSM vs CDMA

COMPARING THE TWO MOST

PREVALENT MOBILE COMMUNICATION TECHNOLOGIES.

WHAT IS…

GSM

GLOBAL SYSTEM FOR MOBILE COMMUNICATION

BASED ON TDMA/FDMA

STARTED IN 1982 IN EUROPE

WHAT IS CDMA

CODE DIVISION MULTIPLE ACCESS

BASED ON SPREAD SPECTRUM TECHNOLOGY

STARTED IN 1996 IN NORTH AMERICA

GSM ARCHITECTURE

HOW CDMA WORKS

PROS AND CONS GSM CDMA

USES SIM CARD CDMA PHONES ARE NOT CARD ENABLED

OFFER INTERNATIONAL ROAMING CANNOT OFFER INTERNATIONAL ROAMING

EASILY CLONNABLE HIGHLY SECURE

EXTENDED BATTERY LIFE LOWER BATTERY LIFE

OPERATES IN 900 OR 1800 MHz BANDS OPERATES IN 450 MHZ BANDS

FIXED COVERAGE AREA(35KM) GREATER COVERAGE AREA

LIMITED CHANNEL CAPACITY HIGH SPECTRAL EFFICIENCY

HIGHER RADIATION IN GSM LOWER EFFECT OF RADIATION

ADVANCED TECHNOLOGIES

CRITICAL REVIEW

GSM IS RECOMMENDED IF YOU USE MORE VOICE COMMUNICATION

HIGHER TALKTIMEBETTER SOUND QUALITY

ARE HEAVILY MOBILIZED FROM ONE REGION TO OTHER

CONTD.

CDMA IS RECOMMENDED IF YOU

WORK MORE ON DATA COMMUNICATION

MOBILISED ONLY IN CERTAIN REGION UNDER YOUR SERVICE PROVIDER’S COVERAGE AREA

PREFER TO HAVE BETTER SECURITY

CONCLUSION GSM AND CDMA ARE BOTH FRONTIER

TECHNOLOGIES HAVING SOME ADVANTAGES AND DISADVANTAGES.

IT DEPENDS UPON THE SUBSCRIBER’S CHOICE WHICH TECHNOLOGY BEST SUITES THEIR NEEDS