- Introduction to Wireless Technologies
- A Brief History of Wireless Communications
- The Continuing Evolution of Wireless Technologies
- Modern Wireless Technologies
- Overview of Land Mobile Radio (LMR) Systems
- Radio Wave Characteristics
- The Electro-magnetic 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 Variants
- Basic Digital Modulation Schemes: ASK, PSK, FSK
- Project 25 Modulation Schemes: C4FM and CQPSK
- Getting More Bits per Baud using QAM
- Error Correction Techniques
- Physical Layers and Multiple Access Techniques
- Basic Access Techniques: FDMA and TDMA
- OFDM and OFDMA
- Spread Spectrum and CDMA
- 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
- Link Budget Analysis Techniques
- Noise and Noise Sources (Internal and External)
- Link Budget Considerations
- Budgeting the Radio Link
- Line-of-Sight Radio Propagation
- Defining Line-of-Sight
- Line-of-Sight Path Loss Analysis
- The Non-Line-of-Sight Propagation Environment
- Non-Line-of-Sight Propagation Mechanisms
- Impairments due to Time Dispersal in NLOS Environments
- Modeling NLOS Outdoor Propagation Loss
- Modeling NLOS Indoor Propagation Loss
- Fundamentals of Traffic Engineering
- A Brief Review of Statistics and Probability
- Fundamental Traffic Terms and Concepts
- Traffic Patterns: Smooth, Random and Peaked
- Modeling Traffic: Loss (Blocking) Systems
- Modeling Traffic: Queuing (Delay) Systems
- Defining Service Objectives
- Wrap-up: Course Recap and Evaluations
Exercises Performed in This Course:
- Wavelength/frequency conversion
- Using decibels: Powers levels, gains and adding ratios
- Converting among different signal level references
- 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
- 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 reflection coefficient
- 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 terrestrial receive system
- Converting NFdb to Noise Temperature
- Performing LOS link budget using manufacturer’s equipment
- 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
- Calculating traffic intensity in Erlangs and CCS
- Use Poisson, Erlang B and Erlang C models to determine the GoS
- Calculating link utilization based on server capacity and traffic generated
- Determining delay probability using Little and Erlang C models