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7 - Indira Gandhi Centre for Atomic Research

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9. Conclusion<br />

Wireless networks constitute an important part of the telecommunications market. The<br />

result of the integration of Internet with mobile system, the wireless Internet, is expected<br />

to significantly increase the demand <strong>for</strong> wireless data services. The use of wireless<br />

transmission and the mobility of most wireless systems give rise to a number challenges<br />

that must be addressed in order to develop efficient wireless systems. The challenges<br />

include wireless medium unreliability, spectrum use, power management, security, and<br />

location/routing. Digital cellular standards GSM and CDMA meet the current<br />

requirements in voice communications and being upgraded to meet the future demands in<br />

mobile multimedia applications. 3G mobile networks represent an evolution in terms of<br />

capacity, data speeds and new service capabilities from second generation mobile<br />

networks to provide an integrated solution <strong>for</strong> mobile voice and data with wide area<br />

coverage.<br />

References:<br />

1. Principles of Mobile Communication by Gordon L. Stüber, Springer publisher, 2000<br />

2. Handbook of wireless networks and mobile computing, Stojmenovic (Ivan) ED, 2002<br />

3. http://www.gsmworld.com<br />

4. http://www.cdg.org<br />

112

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