Length: 3 Days
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DAS Systems Engineering Training, Public Safety Radio Compliance

Antenna Engineering Training Boot Camp

DAS Systems Engineering Training,  Public Safety Radio Compliance is a customized Public Safety Radio DAS (Distributed Antenna System) Training course covers all aspects of required Public Safety Radio coverage and performance in buildings and other special environments.

Beginning with the basic radio principles of Public Safety Radio Systems, it builds a solid perspective and understanding of how to determine if a particular venue complies. It describes the process of designing and installing a DAS system, and demonstrating its compliance to applicable agencies.

The first day of the class provides training and coaching on the fundamental concepts, principles, and practical methods of Public Safety DAS systems. The second day is a practical exercise determining if compliance exists in an example venue and identifying the needed methods to improve coverage if necessary. The third day identifies and discusses “lessons learned” from the field exercises and reinforces the skills and techniques necessary for compliance determination and demonstration.

A distributed antenna system (DAS) is a shared-infrastructure or neutral host model for expanding a wireless network footprint such as WiFi, GSM, CDMA/1x-EVDO, UMTS, LTE and 5G NR by adding coverage and capacity in hard to reach areas. It increases the wireless quality with minimum capital investment. TONEX course covers both indoor and outdoor DAS solutions for the private and public sector including:

  • Densely populated urban areas
  • Tunnels
  • Colleges and universities
  • Hotels, resorts, and convention centers
  • Venues: stadiums, convention centers and theme parks
  • Hospitals and medical centers

The DAS training course explores the various key challenges in diverse scenarios, including architecture, capacity, connectivity, scalability, medium access control, scheduling, security, dynamic channel assignment and cross-layer optimization.

The primary focus of this course is the introduction of concepts, planning, design, effective protocols, system integration, performance analysis techniques, simulations and experiments, and more importantly, future research directions in the DAS.

Course Book: Distributed Antenna Systems: Open Architecture for Future Wireless Communications Editor(s): Yan Zhang; Honglin Hu, Shanghai Research Center for Wireless Communications, China; Jijun Luo, Siemens AG Communications, Munich, Germany

Who Should Attend?

Engineers, Analysts, Engineering Managers, DAS Technicians, DAS Project Planners


Basic familiarity or experience with electronic equipment

Course Outline

Introduction to Distributed Antenna Systems (DAS)

  • What is a DAS?
  • Overview of Wireless Communication Systems
  • Broadband Wireless Communication Systems
  • Challenges of Broadband Wireless Access Networks
  • Improve Coverage and Reliability of Public Safety communications
  • Benefits of DAS Technology
  • Limitations of DAS Technology
  • Applications of DAS Technology
  • Advantages of using a DAS
  • Reliable in-building communications
  • Availability and usability of RF signals in the intended coverage areas (coverage)
  • Ability to support the demands of the system users and recipients (capacity)
  • RF Distribution Technologies

Basic Concept of a DAS

  • RF Fundamentals
  • Fundamentals of Antennas
  • DAS as a Simple Repeater
  • DAS as Complete Infrastructure (indoor and outdoor wireless services)
  • Passive and Active DAS
  • Network Requirements
  • Approach and requirements when multiple systems require shared DAS

Basic Structure of Public Safety Radio Systems and associated DAS Systems

  • Coverage and Traffic objectives
  • Basic Radio Architecture
  • Public Safety RF signal technologies
  • Problem Coverage Environments and Solutions
  • Special Considerations applicable to High Reliability communications

Government Requirements for Reliable Public Safety Communications

  • Rationale and Basis for Authority
  • Federal, State, and Local regulations perspective
  • Survey of Typical Regulations Documents
  • Responsibility of Property owners/managers

Mandated Coverage Test Process for Buildings and other regulated areas

  • Basic concept and measurements
  • Initial Determination whether a Public Safety DAS is required
  • Measurement Criteria to determine initial compliance/non-compliance
  • Data processing and mathematical basis for determining compliance

Field Training Demonstration Exercises for Hypothetical System

  • Building coverage survey using instructor-provided radio system
  • Analysis of needed corrections
  • Basic design of required DAS system
  • Identification of required locations for DAS equipment; accessibility review

DAS Design Process and development of Bid Requirements

  • Determination of non-compliant areas from measurements
  • Identification of specific DAS architectures to establish compliance
  • Technical and Economic selection of optimum architecture for the case
  • Verification of RF plan using temporary test transmitters and receivers
  • Physical inspection of building to identify usable locations for equipment
  • Final RF configuration design and specification of equipment requirements
  • Development of Installation plan; and solutions to any tenant concerns
  • Cost Estimation of equipment and installation
  • Generation of Bid Requirement documents, review and issuance

Post-installation Verification of Compliance, Future Demonstrations of Compliance

  • Installer verification of receive signal levels throughout building
  • Physical troubleshooting and correction of any equipment related issues
  • Identification, design and installation of any additional required mitigation
  • Formal Demonstration of compliance to applicable public safety agencies
    • Scheduling Agency participation in tests if required
    • Completion of all required measurements
    • Measurement analysis
    • Preparation of Compliance Report

The following standard material for the General DAS course will be provided and available for Discussion or Presentation in response to needs of the class

DAS Technologies, Frequencies, Planning, DESIGN, and Deployments

  • DAS versus Metro-Femto
  • DAS versus Domestic/Small Business Femtocell
  • Practice and Methodology
  • Cost Requirements
  • Site Survey
  • Building Types
  • In-Building Tools
  • Documentation
  • Components and Materials
  • Antennas
  • Coax
  • Connectors
  • Couplers and Taps
  • Bidirectional Amplifiers
  • Repeaters
  • Diversity and Multiplexing for DAS
  • Channel Modeling Perspective
  • Distributed Antenna Processing
  • Theoretical Limits of Wireless Systems with Distributed Antennas
  • Cooperative Communications
  • Distributed Antenna Systems
  • Distributed Signal Processing in Wireless Sensor Networks
  • Outdoor-indoor interference for indoor DAS and femtocells
  • Evolution of Multi-Carrier DAS
  • Configuration of MIMO antenna system in DAS
  • MIMO distributed antenna system
  • MIMO vs SISO signal analysis
  • MIMO, SDR and CR

DAS Components

  • DAS System Components
  • Radios and Radio Repeaters
  • Amplifiers and Filters
  • Cabling
  • Cabling Distribution
  • Towers and Mounts
  • Antennas

DAS Network Topologies

  • Point-to-Point
  • Point-to-Multipoint
  • Mesh (peer-to-peer or multipoint-to-multipoint)

Antenna Types in DAS configurations

  • Omni Directional
  • Broadcasts in all directions
  • Examples are whip, helical and dipole
  • Directional
  • Broadcast in a single direction
  • Examples are Yagi, and parabolic
  • Leaky Coax

Main Antenna Systems

  • Lighting Protection
  • Cabling
  • Cabling Distribution
  • Building or Tower Mounts
  • Antennas

In Building-DAS Infrastructure components

  • Antenna Systems
  • Omni Directional
  • Directional
  • Leaky Coax
  • Active Distribution Equipment
  • Head End
  • Back End
  • Passive Distribution Equipment
  • Directional Couplers
  • Active Distribution Equipment
  • Active distribution equipment
  • Electronics associated with DAS
  • Separate input power, usually 110 V AC or 220 V AC
  • Transceivers
  • Power Supply Units
  • Amplifiers
  • Back-End Equipment
  • Head-End Equipment
  • BiasTees
  • Hybrid Couplers
  • Power Splitters
  • Equal amplitude
  • Unequal Splitters
  • Cable distribution
  • Single-mode fiber optic cable
  • Multi-mode fiber optic
  • Unshielded Twisted Pair cable
  • Coaxial cable
  • Leaky Coax

Outdoors-DAS Infrastructure components

  • Antenna Systems
  • Omni Directional
  • Directional
  • Towers and Mounts
  • Self-Supporting
  • Monopoles
  • Guys
  • On buildings and other structures
  • Cabling Systems
  • Coax
  • Single-mode Fiber
  • Amplifiers and Couplers
  • Directional Couplers
  • BiasTees
  • Hybrid Couplers
  • Power Splitters
  • Back Haul Antenna Systems

IN-BUILDING DAS Network Design Options and Considerations

  • Site survey
  • Site Location
  • Location Type (Building or Tower)
  • Location Infrastructure
  • Path Analysis
  • Survey Documentation
  • Size and location of building
  • Number of tenants
  • Building architecture
  • Wall and floor composition
  • Floor layout
  • Interior partitions and other impediments to signal coverage
  • Asbestos presence
  • Aesthetics
  • Availability of infrastructure (Fiber, telco rooms, conduits, cable trays)
  • Local codes
  • Direct feed from base station or off the air
  • Avoiding interference from outdoor signals penetrating the building
  • Estimating signal propagation within the building initially, then measuring
  • Antenna location and placement
  • Antenna types

DAS System Engineering

  • DAS Systems Requirements
  • Fiber Cabling
  • Coaxial cable called Heliax / Radiax
  • Couplers, power dividers
  • Internal spot antennas
  • Signal Boosters
  • Bi-Directional Amplifiers, BDA’s
  • Roof Top Antenna Systems
  • External Antenna Arrays
  • Antennas
  • Antenna Mounting Components
  • Cabling Distribution
  • Active Distribution Equipment
  • Passive Distribution Equipment

Installation, configuration, commissioning, maintenance and troubleshooting of a DAS

  • DAS Configuration
  • DAS Installation
  • DAS Testing
  • DAS Troubleshooting and Maintenance

Measurement Workshops

Instructor will work with students in the last two days of the class to practice measurements, site survey and compliance techniques in sample and live conditions and locations.



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