Access Networks

Course guarantor:

Pavel Lafata

Lecturer:

Jaromír Hrad, Pavel Lafata

Tutor:

Jaromír Hrad, Petr Jareš, Pavel Lafata, Tomáš Zeman

Supervisor:

Department of Telecommunications Engineering

Synopsis:

The course covers the area of high-speed transmission of information in the access network level, with emphasis on the use of optical transmission media and its combination with metallic lines (FTTx). In the practical part, students will learn the methods required for the design, modeling, measurement and analysis of transmission media, diagnostics of systems and whole access networks.

Requirements:

General knowledge of telecommunication networks, eg. ín the scope of subject „Telecommunication Systems and Networks“. Welcome knowledge of characteristics of optical fiber and transmission of signals in optical networks.

Syllabus of lectures:

1. Access networks. NGA networks. Communication requirements and protocols.

2. Topology and architecture of access networks. Open access network.

3. Features metallic transmission environment, modeling of telecommunication line parameters.

4. Design and manufacture of metallic cables, crosstalk and their modeling.

5. Types of subscriber lines, the used modulation and coding.

6. Information capacity of digital subscriber lines.

7. VDSL2 modems, frequency bands and modulation methods, crosstalk cancelation.

8. System G.fast, further expansion of throughput.

9. Optical access networks, network topology and variants FTTx.

10. Passive optical network, medium access control, variants.

11. 10 Gbps and higher optical access network, wavelength divisions multiplex using.

12. Optimization of topology and design of access networks.

13. Data communication over cable television. Topology, options, available parameters.

14. The use of power lines for data transmission, PLC and BPL.

Syllabus of tutorials:

1. Introduction to the exercise. Safety in laboratory.

2. Calculation of the theoretical information capacity.

3. Calculation and balance of attenuation.

4. Introduction to the cycle of laboratory exercises.

5. Exercise A - measurements on the line.

6. Exercise B - measurements on VDSL2 line.

7. Exercise C - measurements in passive optical network.

8 Exercise D - measurements on the cable network.

9. Exercise E - throughput analysis and parameter of data stream.

10. Entering the individual project.

11. Solution of the project.

12. Consultation on the project.

13. Presentation and evaluation of the project.

14. Replacement exercise.

Study Objective:

In the practical part, students will learn the methods required for the design, modeling, measurement and analysis of transmission media, diagnostics of systems and whole access networks.

Study materials:

Keiser, G.: FTTX Concepts and Applications, Wiley-IEEE Press, 2006. ISBN 978-0-471-70420-1

Kazovsky, L. G. - Cheng, N. - Shaw, W. - Gutierrez, D. - Wong, S.: Broadband Optical Access Networks. Wiley. 2011. ISBN 978-0-470-18235-2

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Electronics and Communications - Communication Networks and Internet (compulsory course in the program)