2. AGENDA
Introduction.
What is Spread Spectrum.
Architecture of CDMA.
Application of CDMA.
Limitations of CDMA.
2
3. INTRODUCTION
CDMA is a digital wireless technology.
It uses Spread Spectrum technique.
It was pioneered and commercially developed by QUALCOMM .
Interim Standard-95 , standards for first generation CDMA cellphone
technology.
The first CDMA system was launched in September 1995 by Hutchison
Telephone Co. Ltd. in Hong Kong and SK Telecom in Korea.
3
8. LIMITATIONS OF CDMA
As the number of users increases its performance decreases.
‘FAR-NEAR’ problem.
It is limited in terms of Coverage and Roaming.
It does not have a SIM card that makes M-Commerce difficult.
8