3-day workshop with hands-on practical sessions and case studies., 0900 - 1700

The trainer graduated from Technical University in Brno, Faculty of Electrical Engineering and Communication, in Czech Republic in 1994 and received his M.S. and Ph.D. degrees in 1995 and 2003, respectively. He published research papers in the area of Digital Signal Processing and Microwave Measurements. He is a member of Czech Society of Electrical Engineers.

He has several years of experience as a mobile and fixed wireless communication systems engineer and radio hardware designer, working for both operators and manufacturers of radio equipment in Europe, North America and Africa. Core of his experience dwells in planning of both Point-to-Point and Point- to-Multipoint radio transmission systems, design of mobile communication networks with special focus on NMT and GSM/GPRS, international standards studies (ETSI, ITU-T) and system analysis for design of wireless access systems (HIPERLAN II), as well as in design of measurement procedures for microwave frequency bands.

Since 2001 he has been involved in planning and implementation of high speed data networks based on WLL (IEEE 802.11b) and BWA technology, both FDD and TDD covering several frequency bands, starting from 2.4 GHz (Lucent Technologies; BreezNET), 3.5 GHz (Alvarion BreezAccess, WalkAir) up to high-speed access system in 26 GHz band (Ericsson Mini-Link BWA; Alcatel). He was involved in all activities during network startup, from initial coverage planning, through on-site implementation, up to commissioning and Network Management System installations.

After completing this training, the participants shall be able to:

• Create and edit path profile using manual data entries and/or digital terrain models,
• Calculate antenna heights and separations using well specified clearance criteria,
• Calculate both multipath and rain related Performance and
• Availability percentages of the link and evaluate them with respect to ITU-R Recommendations,
• Analyze the effect of a single specular reflection on the path and choose suitable countermeasures,
• Assess diffraction losses resulting from changing refractive index gradient on low clearance hops,
• Perform intrasystem interference calculations and ensure their frequency plans are kept free from harmful threshold degradations,
• Generate suitable set of data required by installation technicians and operation personnel.
  

This course offers a comprehensive and highly technical hands-on-computer training related to planning of point-to-point microwave links and networks, using an advanced planning software tool Pathloss 4.0.

Participants of this course will be able to plan microwave point-to-point links using software planning tool Pathloss 4.0, including ability to analyse data from path surveys, create respective profile data and decide upon antenna heights, calculate Performance and Availability percentages of the link and optimise them with respect to the ITU-R objectives as well as cost-effectiveness. They will be able to perform frequency planning for large networks, avoiding their design to suffer from harmful interference.

Basic knowledge of theoretical principles of radio propagation governing the design of MW Point-to-Point links, including respective ITU-T, ITU-R Recommendations. A license-activated copy of Pathloss 4.0 installed on laptop computer.

Microwave Transmission Engineers and Radio Link Planners who shall be involved in wireless network planning, expansion and optimisation processes. Transmission team-leaders and managers who want to keep close contact with technical part of the job.

Day 1

Introduction to PathLoss 4.0:
Planning Concept, Basic Parameters, Generated Reports, Types of Digital Terrain Models (DTM), Coordinate Systems (Datum, Ellipsoids, Grid).

Hop Definition:
Summary Module, Equipment Lookup Table, Antenna Lookup Table, Frequency Channels Table, Earth Radius Representation in Profiles.

Network Description:
Network Overview, Site List, Link List, Background and 3D View Generation.

Terrain Profiling and Diffraction Losses:
Generating Terrain Profile, Choosing Clearance Criteria, Antenna Centre-line Calculation, Diffraction Module Overview, (Radius Method, Multiple Knife-edge Methods), Total Diffraction Loss Concept, Diffraction Parameters, Case study for diffraction.


Day 2

Microwave Worksheet:
Net Pathloss Components, Free Space Loss and Atmospheric Absorption, Multipath Propagation Reliability Prediction Models (Vigants – Barnett, ITU-R P.530-6, ITU-R P.530-7, ITU-R P.530-9, K.Q Factor), Terrain Roughness Calculations, Grazing Angle, Rayleigh Fading Probability, Diversity Options (SD Baseband Switching, SD IF Combining), Rain Attenuation Models (Crane, ITU-R P.530), Polarization Considerations, Rain Related Fade Margin. Case studies for various frequency bands and both ITU-T G.821 and ITU-T G.826/828 related objectives.

Applying Diversity and Protection:
Diversity Improvement Models, Variable Parameters, Hybrid Diversity combining models.

Multipath Operation:
Constant Gradient Trace, Variable Gradient Trace, Annual versus Worst Month Statistics.
Reliability versus Performance and Availability.


Day 3

Design with Passive Repeater:
Plane Reflector PR, Back-to-back Antenna PR, Case studies for PR.

Reflection Analysis and Multipath Operations:
Reflective Plane Definition, Two Ray Optics, Terrain Roughness and Clutter, Dispersion Analysis, Modifying Reflection Parameters, Countermeasures and Case study.

Applying Diversity and Protection:
Diversity Improvement Models (Space Diversity, Frequency Diversity, Angle Diversity), Variable Parameters, Case study for SDH hops.

Intra-system Interference:
Interference Calculation Procedure, Repeated Analysis Method for Frequency Planning, Interference Reports, Cross-Polarization Interference. Case studies on extensive GSM/GPRS related MW transmission networks.