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GSM Technology Seminar Report

September 30, 2012

Introduction to GSM Technology Seminar Topic:

Access method:

GSM system uses TDMA which is digital transmission technology. In this, a number of users can access a single radio frequency channel to communicate without interference. This is done by allocating a unique time slot to each user within each channel. 

Narrow band vs broad band:

The GSM specifications are decided on narrow band TDMA. This is because of the disadvantages of broad band. First is each cell will contain a large number of carriers and each site use the same set of frequencies which provides simple planning for the individual operator. This will decrease the initial cost per site, but sets a limit for expansion of the networks.

Performance characteristics of GSM:

GSM system supports mobile and wireless communication of voice and data. It can be accessed globally. A chip card enables different service providers to works on same device. I has good frequency efficiency, small cells can allow large number of customers to communicate. The quality of voice and data is very good even in trains, cars, etc. It has security functions also like PUK code.

Services provided by GSM:

Three types of services are provided by GSM system. These are Telephony services, bearer or data services, and supplementary services.

Different types of subscriber advanced services are call bearing, Calling and Called Line Identification (CLIP), prevention against display of calling or called number (CLIR), call waiting and call hold-indication of incoming calls during conversation and the ability to switch to this without dropping the first one, multi-party calls with up to six parties, voice mails, data calls, GPRS internet on mobile, short message service, multiple subscriber number.

Download  GSM Technology Seminar Report .


posted in CSE Paper Presentations, CSE Seminar Topics by Ramesh Gavva/Kasarla shanthan

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