4g wireless systems seminars

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INTRODUCTION


A 4G system will be able to provide a comprehensive IP solution where voice, data and streamed multimedia can be given to the users on “ Anytime Anywhere ” basis and higher data rates than the previous generations.

It is going to be launched in the year 2010.


4G HARDWARE

UWB Networks
An UWB can be used at low energy levels with higher bandwidth
Bandwidth — as much as 60 megabits per second, which is 6 times faster than today’s wireless networks
Smart antennas --- Switched Beam Antennas, Adaptive Array Antennas


4G SOFTWARE

4G will be unification of different wireless networks, including wireless LAN technologies (e.g. IEEE 802.11), public & personal area networks (2.5G, 3G)
Software Defined Radio, Packet Layer, Implementation of Packets, Encryption, Flexibility, Anti-Virus

Problems with Existing System

Data transfer rate is slow.
All data services cannot be handled with available bandwidth.
The bandwidth is not allocated efficiently for data.
Same protocol is not being used for similar technologies