Transmission demystified

Description

Transmission demystified training course description

Transmission is the process of sending information along a medium of, copper, fibre or wireless. This course looks at transmission techniques for both telecommunications and data communications with a particular focus on Microwave, SDH, DWDM transmission. The course aims to demystify these technologies by explaining all the buzzwords used in transmission.

What will you learn

• Describe various transmission technologies such as multiplexing and demultiplexing.
• Explain how Microwave works.
• Explain how SDH works.
• Explain how DWDM works.

Transmission demystified training course details

Transmission demystified training course contents

• Transmission basics

Systems, media, signals. Signal degradation, noise, distortion, attenuation. Digital, analogue. Modulation, encoding.

• RF

Frequency, wavelength. Distance / range issues, interference, Antenna, power, dB, RF propagation, testing.

• Microwave transmission

What is microwave transmission, point to point communications, line of sight, parabolic antenna, relays, planning considerations, rain and other issues

• Wired transmissions

Copper, Fibre, optical transmission, fibre characteristics, fibre component parts. Multi Mode Fibre (MMF). Single Mode Fibre (SMF). Fibre connections. Lasers. Attenuations, dispersion, optical signal noise ratios (OSNR) and their effects. Channel Spacing and Signal Direction. Limiting factors to single wavelength.

• Introduction to SDH

Timing and synchronisation of digital signals, the plesiochronous digital hierarchy (PDH), the synchronous digital hierarchy (SDH), service protection with SDH. TDM.

• SDH6

Standards, basic units, frames, STM1 frame, bit rates, STM0, STM1, STM4, STM16, STM64, STM256, SDH architecture, rings, Add drop multiplexors. SDH network topologies, structure of SDH equipment, SDH synchronisation, protection switching in SDH networks, SDH alarm structure, testing of SDH, equipment and systems, Ethernet over SDH.

• WDM overview

Multiplexing, TDM, WDM benefits. WDM standards. CWDM vs. DWDM. Four Wave Mixing (FWM). Impact and countermeasures to FWM on WDM.tructure of SDH equipment, SDH synchronisation, protection switching in SDH networks, SDH alarm structure, testing of SDH, equipment and systems, Ethernet over SDH.

• DWDM

ITU G.694.1, channel and spacing. Optical Terminal Multiplexers (OTM). Optical Add/Drop Multiplexers (OADM). Adding versus dropping. Optical Amplifiers. Erbium Doped Fibre Amplifiers (EDFA). Transponders and Combiners. Optical and Electrical Cross Connects (OXCs/DXCs). Cross Connect types (Transparent/Opaque). Advantages and disadvantages of various Optical cross connects.

• IP transmission

Telecommunications versus data communications, IP transmission, VoIP, MPLS.