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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
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
Example Configuration for
Indoor Coverage Solutions
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 3
Example Passive DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 4
Graphic source: Indoor Radio Planning by Morten Tolstrup
Example Active DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 5
Graphic source: Indoor Radio Planning by Morten Tolstrup
Hybrid DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 6
Graphic source: Indoor Radio Planning by Morten Tolstrup
LTE eNB MIMO DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 7
Graphic source: Indoor Radio Planning by Morten Tolstrup
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
November 22, 2014 Rob Lopez, PE - RCC
Consultants, Inc.
8
Example Components
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 9
Example FTTA DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 10
ICU= Interconnect Unit
RAU= Remote Access Unit
Example Head-end Equipment
• 11 Zones
• 22 Sectors
• +200 MIMO antennas
• 1.8 Million Sq. Ft.
• CommScope ION B
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 11
Example Remote Amplifiers
for MIMO Antenna Configuration and
LTE eNB’s
November 22, 2014 Rob Lopez, PE - RCC
Consultants, Inc.
12
Remote Amplifiers IDF installation
for a MIMO configuration. LTE eNB Base Stations
Example Multi-Carrier Head End Design
for: AT&T, Verizon, T-Mobile and Sprint
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 13
Example Corning Mobile Access
Head End Design: CDMA, UMTS and LTE
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 14
Typical Building Floor MIMO
Antenna System Diagram
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 15
LTE Reference Signal Receive
Power (RSRP) Coverage “Heat Map”
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 16
Typical Measurement
Equipment Capabilities for DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 17
Typical Measurement Equipment
Capabilities for DAS
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 18
Example Test Equipment
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 19
Multi-Carrier Multi-
Band Measurement
Systems
LTE / CDMA / UMTS / HSPA / GSM
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.
20
Benchmark Test Planning
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 21
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!
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 22
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 23
High Level Summary
November 22, 2014 Rob Lopez, PE - RCC Consultants, Inc. 24
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