Digital RF Communication Systems

Course 081

Summary:

This five-day course covers the theory and design of the digital and RF sections of wireless communication systems. The digital sections include speech compression, error correction, modulation, and multiple access. The RF sections include the transmitter and receiver of both mobile units and infrastructure.

Learning Objectives:

Upon completing the course, the participant will be able to:

• Describe the block diagram of a wireless communication system.
• Explain speech compression and error correction.
• List and explain digital modulation and multiple access techniques.
• Describe the block diagrams of a wireless RF transmitter and receiver.
• Explain how the RF components of a transmitter and receiver work.
• Calculate a system link budget.

Target Audience:

Digital and RF engineers and technicians working with the wireless industry will benefit from this course. The prerequisite for this course is a basic knowledge of communications engineering.

Outline:

Day One

System Design
• Block diagram • Baseband signalling • Forward error correction • Modulation/demodulation • RF transmitters/receivers
Wireless System Issues
• Cellular systems • Propagation effects • Diversity • Multiple access techniques • Driving forces • Wireless environment
Digital Modulation/Demodulation Techniques
• Fourier spectrum • Frequency translation • Filters and systems • Sampling theory • Power/bandwidth tradeoff • Phase and frequency modulations

Day Two

Digital Modulation/Demodulation Techniques (Cont'd.)
• Related modulations • Comparison of digital modulation techniques • Carrier and clock recover techniques • Noise and interference
Link analysis
• Link budgets • Noise figure, receiver temperature • S/N calculations

Day Three

Error Detection/Correction Coding
• Block codes • Convolutional codes • Performance of coded systems
Code Division Multiple Access
• PN sequences • Direct sequence spread spectrum • Frequency hopping spread spectrum • Interference rejection

Day Four

RF System Block Diagram
Phase-Locked Oscillators
Modulators
Power Amplifiers
Antennas
Low Noise Receivers
Mixers
Overall Receiver Performance

Day Five

Filters
RF Integrated Circuits
Infrastructure
• Base station transmitters and receivers
RF Propagation, Path Loss, Link Budgets
Review of Wireless System Design, Covering Digital and RF Components
Exercise: Wireless Communication System Design

Subject Areas Covered

Modulation Techniques
Wireless Digital Communications Fundamentals

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