electronic communications systems ctab major strength specify, design, construct, troubleshoot, and...

Electronic Communications Systems

CTAB Major Strength

Specify, design, construct, troubleshoot, and characterize communications systems.


Ian Benjamin – Instructor Telecom Intro – term 4Telecom Apps – term 5Wireless/Radio Fundamentals – term 5Wireless/ Radio Systems – term 6


Rejean Barriault - Instructor

Fiber Optic Communications Term 5

Don Michaelsen - InstructorData Communications Term 5

Advanced Datacomm Term 6

Ian Benjamin

RF / Wireless Experience:Nav Canada 23 yrs (Aircraft Radio

Navigation / Communication / Telecom)Radio Amateur / Radio Repair 30+ yrsMaintained VHF-FM repeater 10 yrs

Intro to Telecom – term 4

Course Outcome

To apply the principles involved in configuring a communications system.

Intro to Telecom (90 hr)

Major ContentTime / Frequency Domain Signals, FDM

Fourier Transform, FFT, Spectrum Analysis

High frequency properties & construction

Linear Modulation – AM / SSB / FM /PM

Modulator / Demod / Mixer / Amp.

Transmitter / Receiver / Noise

Oscillators and Synthesizers – PLL, DDS

Intro to Telecom

Lab EquipmentSpectrum Analyzer, FFT scope

Freq. Selective Voltmeter

Agilent RF Generator

Function Generator Modulation

Lab Volt Telecom Modules

Telecom Applications –term 5

Course Outcome

Use basic test equipment to analyze the performance of telephony and CATV transmission systems, both analog and digital.

Telecom Applications (45 hrs)

Major ContentSampling, Aliasing, Quantization

Digital Modulation – PCM, FSK, PSK, QAM

Telephony – Local Loop, CO, Mux, ADSL

Digital Signal Hierarchy, SONET

Cable TV – Analog & Digital Video, Headend, Distribution, DOCSIS Modem, Return System

Convergence of Services and Carriers.

What is Radio/Wireless?

What is Radio / Wireless?

AM / FM / TV Broadcasting

Land Mobile

Cellular Phone / Data

Satellite / Microwave / Radar

Wireless LAN / MAN / WAN

What is Radio Frequency (RF)?One definition is any frequency above 50kHz

Systems listed on previous slide obvious applications

Less obvious, much more prevalent

Digital and Wired data – ADSL, LAN, USB

Switch mode power supply radiation

Starting to see RF behavior in Power Systems like motor drives – standing waves on “60Hz” wiring

Wireless Fundamentals – term 5

Primary Course OutcomeTo solve fundamental theoretical problems and use

test equipment to perform fundamental practical measurements of radio systems involving antennas, transmission lines, and EM waves.

Secondary OutcomeTo enable students who work in non-radio related

workplace to apply RF principles in their work.

Wireless Fundamentals (135 hrs)

Major Content areasApplied EM Physics Intro

Transmission Lines

Propagation

Antennas

Microwave

Real World Radio

Wireless FundamentalsTransmission Lines

Why does wire act as transmission line?Pulse and Sine responseStanding wave RatioMatching and Smith ChartsMeasurements – Wattmeter, Slotted Line, Time

domain reflectometer (TDR)Line fault location using TDR (major non-radio

application)New Content – Anritsu Site Master FDR test set.

Wireless Fundamentals

PropagationFree space, line of sight, plane earth, ionospheric

EIRP

Received Signal Strength Prediction

RF Channel Characteristics

Multipath Fading and Bandwidth Effects


AntennasBasic definitions

Characteristics

Radiation patterns, pattern formation

Adaptive Antennas

Selection


MicrowavesWaveguides

Passive components

Active Components

Radar


Real World Radio Transmitter Spectral Purity

Receiver Spurious Response

Intermodulation , Desensitization

Duplexers and Multicouplers

EMI / EMC (useful in non-radio workplace)


QUESTIONS?

Wireless / Radio Systems – term 6

Course OutcomeUse fundamental system concepts, design tradeoffs, and block diagram architecture to plan, manage and troubleshoot wireless and radio systems at an entry level.

Wireless/Radio Systems (45 Hours)

Major ContentMultiplexing/Multiple Access

DSP overview

802.11 Wireless LAN / Bridge

Terrestrial Microwave

Satellites

Wireless / Radio Systems

Multiplexing / Multiple accessTDMA – sync / async

Channel Model – Delay Spread

FDMA / OFDMA

CDMA

Spatial Multiple Access - MIMO, 802.11n

Collisions, Hidden/Visible Nodes


Digital Signal Processing (DSP)Functional Concepts, no Math or Programming

Enabling technology

Signal Generation / Detection

Adaptive Filter / Equalization

Voice Compression – Vocoder

ADSL, OFDMA examples


Terrestrial Microwave ApplicationsDigital vs Analog

Repeaters

Modulation


SatellitesOrbits – low, medium, geostationary

System characteristics

Examples – Bent Pipe Transponder, Direct Broadcast TV, VSAT

GPS Architecture, Signals, Applications

Differential GPS, WAAS


802.11 Wireless LAN / BridgeSystem Architecture / ProtocolsTechnologist level actions:

Antenna application and selectionRF channel / Coverage zones overlap and self

interferenceRTS/CTS, fragmentation thresholds and

performance tuning


QUESTIONS?

EQUIPMENT DONATIONS

Defective components, assemblies,

Antennas

Test Equipment

electronic communications systems ctab major strength specify, design, construct, troubleshoot, and...

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