AIM
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Improve Performance and Eliminate Interference in Distributed
Antenna Systems utilizing ISCO’s
dANF for DAS
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Why is Indoor Coverage Important?
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New Voice,
Video, Gaming, MMS, Email, Web services are now available
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These new
services require high capacity and QoS
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Indoor users are the most likely
to utilize these services
- More comfortable conditions
- Waiting
situations (Store and Review)
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Why a greater likelihood for interference with
DAS?Indoor coverage » More coverage » More Subscribers » High
Capacity » High Traffic
DAS typically combines multiple technologies
onto single antenna
Multiple Spectrum Allocations create difficult
planning scenarios
Small path loss to RF heads is implicit in
architecture (traffic and interference)
Local interference can
re-radiate affecting entire DAS network
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DAS Types and Vulnerabilities
- Lead or Shared Carrier System
- Lead Carrier cannot
control all aspects of frequency planning for others on network
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Shared Antenna Systems
- Near/Far interaction between DAS and
Macro System
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Neutral Host
- Due to independence, NH
systems can induce un-coordinated spectrum planning that can cause undue
interference to others networks
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THE ISCO dANF for DAS SOLUTION
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High traffic areas such as airports,
buildings, shopping areas create dynamic interference
environments
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dANF provides real-time, adaptive filtering to remove this
type of time and frequency variant interference
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ISCO’s
digital Adpative Notch Filter Identifies and Removes
co-channel / in-band interference
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