by lucky nanwani contect no 919245678523

1. 2G
Submitted to : Submitted by:
I CAI(JODHPUR) Lucky nanwani
The Institute of Chartered Accountants of India

2. Introduction
 2G (or 2-G) is short for second-
generation wireless telephone technolog
y
 Second generation 2G cellular telecom
networks were commercially launched
on the GSM standard

3. 2G technologies
(WINERS & LOOSERS)
TDMA GSM
CDMA

4. TDMA
 Stands for TimeDivision Multiple Access
 Standardized in 1990 as IS-54
 Provides 3-6 times capacity increase
over 1G
 data rate of 14.4kpbs (can bundle up to 8
channels)
 Introduced authentication and encryption
for security

5. CDMA
 Stands for CODE DIVISION MULTIPLE
ACCESS
 Standerdized in 1993 as IS -95
 Provides 1.5-2 times capacity increase
over TDMA
 Peak data rate of 14.4kbps

6. GSM
 stands for Global System of Mobile
communications
 Standardized in 1992, based on TMDA technology
 Improved battery life over TDMA GPRS
 GPRS peak data rates of 140 kbps;
 EDGE data rates of 180kbps