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The Radio Club of America, Inc.
Technical Symposium
New York, NY Distributed Antenna Systems for Luxury
Residential and Office Buildings in Major
Urban Areas
Presentation by
Robert Lopez, PE - RCC Consultants, Inc.
November 22, 2014
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November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 2
Topics • Why a DAS, a BDA, Small Cell, a Femto
Cell necessary?
• Examples of Different DAS Architectures – Passive
– Active
– Hybrid
– Fiber to the Antenna (FTTA)
– Small Cells
– Bi-Directional Amplifiers (BDA)
– VoWiFi (say whaaaat?!)
• Typical Design Configurations & Output
• Measurements / KPIs
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Example Configuration for
Indoor Coverage Solutions
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Example Passive DAS
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Graphic source: Indoor Radio Planning by Morten Tolstrup
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Example Active DAS
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Graphic source: Indoor Radio Planning by Morten Tolstrup
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Hybrid DAS
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Graphic source: Indoor Radio Planning by Morten Tolstrup
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LTE eNB MIMO DAS
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Graphic source: Indoor Radio Planning by Morten Tolstrup
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Typical In-Door DAS
• External off-air signal
source pointing to
“donor” site
• Head-End RF to Fiber
Conversion
• Multi-band Remote
Amplifiers
• Plenum rated coaxial
cables
• Distribution Antennas
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Consultants, Inc.
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Example Components
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Example FTTA DAS
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ICU= Interconnect Unit
RAU= Remote Access Unit
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Example Head-end Equipment
• 11 Zones
• 22 Sectors
• +200 MIMO antennas
• 1.8 Million Sq. Ft.
• CommScope ION B
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Example Remote Amplifiers
for MIMO Antenna Configuration and
LTE eNB’s
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Consultants, Inc.
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Remote Amplifiers IDF installation
for a MIMO configuration. LTE eNB Base Stations
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Example Multi-Carrier Head End Design
for: AT&T, Verizon, T-Mobile and Sprint
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Example Corning Mobile Access
Head End Design: CDMA, UMTS and LTE
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Typical Building Floor MIMO
Antenna System Diagram
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LTE Reference Signal Receive
Power (RSRP) Coverage “Heat Map”
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Typical Measurement
Equipment Capabilities for DAS
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Typical Measurement Equipment
Capabilities for DAS
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Example Test Equipment
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Multi-Carrier Multi-
Band Measurement
Systems
LTE / CDMA / UMTS / HSPA / GSM
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Example Multiple WSP / Multiband
Benchmarking Test Case
• Developer: Toll Brothers
Architect: Christian de
Portzamparc
• The structure is made up of
three imbedded towers
encircled in glass. It consists
of 365 units, 42 stories and
stands 476 feet high on the
corner of 28th street and Park
Avenue. {475,000 sq. ft.}
November 22, 2014 Rob Lopez, PE - RCC
Consultants, Inc.
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Benchmark Test Planning
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14 Access technology & Band Combinations
CDMA/EVDO: Ec/Io, RSCP and RSSI
UMTS/WCDMA: Ec/Io, RSCP and RSSI
LTE: RSRP, RSRQ and RSSI
3 Key Performance Indicators (KPI’s) Technology
Number of Floors= 21 882 Pages!
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High Level Summary
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Summary
• There are different design options for each
building type and venue size:
– DAS, Off-air BDAs, Small Cells, Femto Cells
• Benchmarking is a key upfront exercise to
ensure the final design minimizes
interference, maximizes quality of service,
improves end-user experience and
provides for macro network traffic off-load.
• There’s little room for optimization after a
DAS is installed November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 25