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Mobile systems and the future TorleivMaseng torleiv.maseng@ffi.no 24th ofJanuary 2011 Oslo
The need for higherbitrate  has noupperbound
Mobile systems areexpected to offer the same rate as fixed systems
By reducingthecellsize, more capacity in the mobile system for eachuser is madeavailable
Fewerusers per base station
In the end, eachuser his own base station
Whenthis is not enough..?
DynamicSpectrumAllocationoffrequencies
The hidden node problem. The cognitive radio does not detect the TV broadcaster, but disturbs the TV
1 2 3 4 5 ….. Data associatedwith radio terminal #1 Parameters: 1 Txpower in frequencyslot # 2 Receivednoise/signalquality in frequencyslot # 3 Type of service requested 4 Connectivitybeteween terminals No X/Y 5 Location Calulatesimplifiedmagicfunction Comparesimplified magic functions Data replication by exchangeof relevant (frequency, area) files
Conclusion We (FFI/UNIK) workon: Waterfillingalgorithms Data replication Routing Security aspects Simulation Wewant to contribute to an internationalstandard

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