GSM Vs CDMA - A Comparative Study

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Case Details:

Case Code : MISC008
Case Length : 12 Pages
Period : 1997 - 2003
Pub Date : 2003
Teaching Note : Available
Organization : -
Industry : Telecom and Broadband
Countries : -

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This case study was compiled from published sources, and is intended to be used as a basis for class discussion. It is not intended to illustrate either effective or ineffective handling of a management situation. Nor is it a primary information source.

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Excerpts Contd...

Commercial Development

Qualcomm realized that CDMA technology could be used for commercial cellular communications more efficiently than other technologies as it could make use of the available radio spectrum better than the older analog and digital technologies...

Working of CDMA

CDMA works by converting speech signals into digital signals, which are then transmitted over a wireless network and then decoded at the receiver's end. The receiver's equipment, is tuned to identify the particular code...


CDMA uses a technology called Wireless in Local Loop (WLL) (Refer Exhibit-II). The limited mobility offered by CDMA is best suited for users who want cheaper services...

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Comparison of Handsets

CDMA poses a threat to GSM. It makes full use of the limited bandwidth by squeezing in several calls. So handsets that use CDMA technology are smaller and slicker, have better voice and data quality...


The wireless world is divided into two camps, GSM (used in a large part of Western Europe) and CDMA (used in North America and parts of Asia). Just two years before CDMA was introduced in Hong Kong in1995, European manufacturers chose to support the earlier technology, GSM's TDMA...


Exhibit I: The Generations (GS) of Telecommunication
Exhibit II: Wireless in Local Loop
Exhibit III: Market Shares of Wireless Technologies in the World (2003)

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