RF For Land Mobile and Public Safety Radio Training

RF For Land Mobile and Public Safety Radio Training


RF For Land Mobile and Public Safety Radio Training

This five-day hands-on RF For Land Mobile and Public Safety Radio Training course is intended to provide a detailed understanding of the technical aspects of RF system design, analysis and deployment. Taught as an intensive workshop, the course relies heavily on instructor/class interaction, simulations and exercises that aid the student to develop an intuitive understanding of both the theoretical concepts and their practical application. To be able to participate in the hands-on activities, a scientific calculator and laptop for running Excel spreadsheets (with the analysis pack) are required.

The technologies used for Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) radio, from HF to EHF, are discussed in this course, as is the sizing of facilities, both air interface and backhaul, to satisfy the service objectives. Each module of this course builds upon the previous modules, helping you acquire the competencies you need in a carefully thought-out, step-by-step manner. The discussion of theoretical concepts will be complemented by multiple calculation exercises as well as exercises and simulations using spreadsheets provided by us. All in all, the course will provide you with an in-depth and practical knowledge of RF in the context of public safety radio or LMR systems.

Customize It:

With onsite Training, courses can be scheduled on a date that is convenient for you, and because they can be scheduled at your location, you don’t incur travel costs and students won’t be away from home. Onsite classes can also be tailored to meet your needs. You might shorten a 5-day class into a 3-day class, or combine portions of several related courses into a single course, or have the instructor vary the emphasis of topics depending on your staff’s and site’s requirements.

RF For Land Mobile and Public Safety Radio TrainingRelated Courses:

Duration: 5 days


◾Identify different E-M propagation modes based on frequency
◾Describe different Land Mobile Radio Systems
◾Define the relationship between bandwidth and Baud rate
◾Use decibels for gains, losses and power levels
◾Perform conversions among different signal level references: dBm, dBμV/mμV, dBm/cm2
◾Describe the various components of a radio and their functions
◾Describe various amplifier types and impairments
◾Quantify the relationship between noise and bandwidth
◾Compare analog and digital modulation techniques
◾Determine the bit rate of a channel based on bandwidth, modulation scheme and FEC overhead
◾Describe multiple access using FDMA, TDMA, CDMA and OFDMA
◾Determine Near-field and Far-field regions of an antenna
◾Compare VSWR, Return Loss, Reflected Power and Mismatch Loss
◾Describe multiple antenna systems: MIMO and Adaptive Arrays
◾Perform a cascade analysis for terrestrial radio systems
◾Perform link budgets for both Line-of-Sight and Non-Line-of Sight links
◾Determine LOS distance based on the radio horizon
◾Perform a path loss analysis using a simple physical model
◾Compare several empirical path loss models for NLOS
◾Describe how Delay Spread and Doppler Spread effect small–scale fading
◾Perform a path loss analysis for a NLOS environment
◾Determine blocking and delay probability using basic traffic models

Course Content:

Introduction to Wireless Technologies
◾A Brief History of Wireless Communications
◾The Continuing Evolution of Wireless Technologies
◾Modern Wireless Technologies
◾Overview of Cellular Radio Systems and Components
◾Evolution of Cellular Networks

Radio Wave Characteristics
◾Using the TI-30 Scientific Calculator
◾The Electromagnetic Spectrum
◾Propagation Modes of Radio Waves
◾Radio Spectrum: Licensed and License Exempt

Fundamental Radio Concepts
◾Basics of Information Transfer for Radio
◾Working with Decibels: Gains, Losses, Power, Conversions
◾Voice Compression Techniques for Digital Radio
◾Basic Radio System Components
◾Wireless Impairments: Internal Noise and Distortion

Digital Modulation and Error Correction Techniques
◾Analog Modulation: AM and FM
◾Basic Digital Modulation Schemes: ASK, FSK, PSK
◾Processing for Digital Modulation
◾Getting More Bits per Baud
◾Modern Error Correction Techniques

Physical Layers and Multiple Access Techniques
◾Basic Access Techniques: FDMA and TDMA
◾GPRS Evolution to Packet Switching
◾Spread Spectrum and CDMA
◾High Speed CDMA-based Technologies: 1XEV-DO and HSPA
◾LTE: The Next Evolutionary Step in Cellular Radio
◾LTE Advanced for Greater Throughput

Introduction to GSM: Air Interface, Core Network and Operation
◾GSM History and Deployment status
◾GSM System Architecture
◾The GSM Air Interface (MS-BSS)
◾Network Switching Subsystem (NSS): The Core Network
◾NSS Components
◾GSM Mobility Management

Basics of Antennas and Antenna Systems
◾E-M Field Radiation: Intentional and Unintentional
◾Basic Antenna Types and Uses
◾Basic Antenna Characteristics
◾Antenna Field Regions
◾Care and Feeding of Antennas
◾Antenna Diversity Techniques
◾Advanced Antenna Systems: Adaptive Arrays and MIMO

Link Budget Analysis Techniques
◾Noise and Noise Sources
◾Link Budget Considerations
◾Budgeting the Radio Link

Line-of-Sight Radio Propagation
◾Defining Line-of-Sight: Fresnel Zone Clearance
◾Earth’s Curvature and the Radio Horizon
◾Reflection, Refraction and Scattering in LOS Propagation
◾Line-of-Sight Path Loss Analysis

The Non-Line-of-Sight Propagation Environment
◾Non-Line-of-Sight Propagation Mechanisms
◾Coherence Time and Coherence Bandwidth
◾Impairments Due to Time Dispersal of a Radio Signal
◾Dealing with Problems Due to Time Dispersal
◾Modeling Propagation Loss in a NLOS Environment

Exercises and Simulations Performed in This Course:
◾Wavelength/frequency conversion
◾Using decibels: Power levels, gains and adding ratios
◾Converting among different signal level references
◾Amplifier back-off vs. efficiency
◾Determining the thermal noise seen by an antenna
◾Receiver noise contribution; Noise Figure
◾Determining the bit rate of a channel
◾Determining theoretical symbol error rate
◾OFDM and orthogonality simulation
◾CDMA and processing gain simulation
◾Determining aperture antenna gain
◾Antenna pattern evaluation; beam-width and front-to-back ratio
◾Determining antenna reactive and radiative near fields
◾Converting between VSWR and Return Loss
◾Comparing % reflected power and return loss measurements
◾Phase combining simulation
◾Performing a simple RF power budget
◾Converting gain and NFdB to linear ratios
◾Performing cascade analysis of a cellular radio receive system
◾Performing LOS link budget using manuf. equip. specifications
◾Determine LOS and NLOS margin based on service objectives
◾Determining LOS radio horizon
◾Determining Fresnel zone clearance
◾Performing a free-space path loss analysis
◾Determining link reliability based on rain fade margin
◾Estimating diffraction gain for obstacle in radio path
◾Determining the coherence bandwidth for a given environment
◾Estimating the RMS delay spread of an open area
◾Determining the coherence time for a given Doppler spread
◾Estimating NLOS path loss using the Log Distance formula
◾Comparing expected loss for several models in a given environment

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Time Frame: 0-3 Months4-12 Months

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