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
History of GSM
During the early 1980s, there was rapid growth in the number of analog cellular telephone systems in most European countries, particularly in the United Kingdom, France, Germany and the Scandinavian countries...
GSM Architecture
A GSM based PLMN 16 (Public Land Mobile Network) can be broadly divided into 3 parts:
• The Mobile Station
• The Base Station Subsystem, and
• The Network Subsystem...
Setting Up a Call in a GSM Network
When a mobile unit is switched on, it tries to contact a BTS that is within range to log onto the network. The BTS also transmits the frequencies of neighbouring BTSs to the mobile unit so that the unit can determine which BTS it is getting better reception from...
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The GSM Family
The GSM family of wireless communication provides several voice and data enabling services. It also provides several enriching features to meet the ever-growing needs of customers world-wide...
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Services Provided
GSM technology allows users to send and receive data at rates up to 9600 bytes per second (bps). Since GSM is a digital network, a modem is not required between the user and the network...
Working of GSM
GSM uses a technique called Time Division Multiple Access (TDMA). Using this technique, it divides the frequency band or a part of the electromagnetic spectrum available with a particular phone company into tiny slots and allots each slot to a particular caller...
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History of Code Division Multiple Access (CDMA)
CDMA became commercially available only in the mid-1990s. However, the origin of CDMA can be traced back to 1940. In that year, Hollywood actress turned inventor, Hedy Lamarr, and co-inventor George Antheil, co-patented a way to control torpedoes by sending signals over multiple radio frequencies using random patterns...
Excerpts Contd...>>
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