AIM
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Efficient Re-farming of 900 Mhz GSM Spectrum for UMTS
Deployments Utilizing ISCO’s dANF
Technology
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UMTS at 900 Dilemma
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Billions of Euros spent on “original” UMTS 2100 spectrum
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2100 spectrum requires 2X or more cells for equivalent 900 Mhz
coverage
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2100 deployments create Capex and Opex issues for operators trying
to deploy ubiquitous 3G services
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Requires re-mining of GSM frequencies and “cleaning” of interference
from dense carrier deployments for optimum UMTS system operation
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Four Major Technical Hurdles
Must have adequate spectrum to cost-effectively re-farm for UMTS 900
Country Borders create interference zones between 2G and 3G Deployments
Transition Zones waste capacity and revenue
Near / Far Issues due to
Adjacent Channel Interference are difficult to solve
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THE
ISCO dANF SOLUTION
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Identifies and Removes co-channel / in-band interference
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Eliminates need for exotic frequency planning around transition zones
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Can recover 13-15 Erlangs/ sector for a GSM network
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Improves UMTS network performance
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