Theory of Digital Communication

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

This is a theor. course. Students will get acquainted with all essential aspects of the digital comm. system design and analysis. The depth of the treatment is adequate for independent creative application of the knowledge. Major topics include digital modulation definitions, analysis of their spectral properties, analysis of the impact of the comm. channel and methodology of the optimal and subopt. detector design including bit error rate properties.

Requirements:

Syllabus of lectures:

1. Gen. struc. of the comm. system. Ident. of the problems and their syst. solution

2. Cyclostationary sig., complex envelope, orthogonal sig. decompos., random sig.

3. Memoryless mod. (PSK, QPSK, O-QPSK, OOK, ASK, QMASK, FSK, OFDM,etc.)

4. Mod. with mem. (corr. code, DPSK, pi/4 DQPSK, TCM, CPFSK, MSK, CPM, etc.)

5. Spectral properties of linear modulations

6. Spectral properties of nonlinear modulations

7. Digital modulation in linear channel, intersymbol interference, Nyquist criteria

8. Opt. data detection, gen. chan. model and its param., synchroniz., likelihood fun.

9. Model and char. of the comm. chan.: lin. chan. with AWGN, mobile fading chan.

10. Det. of memoryless modulations. Detector struct. (corr., match filter, sig. space)

11. Detection of modulations with memory. Viterbi algorithm

12. Suboptimal detection. Noncoherent detection. Differentially coherent detection

13. Modulation and detector properties - Bit error rate

14. Multiuser channel - methods of channel sharing (TDMA, FDMA, CDMA)

Syllabus of tutorials:

1. Introduction to the system verification and simulation SW (Ptolemy)

2. Appl. of the signal and systems theory (discr. and contin. time) on modem design

3. Design of modulator for selected linear modulations. Computer simulation

4. Design of modulator for selected nonlinear modulations. Computer simulation

5. Calculation of linear modulation spectra

6. Verification of the spectral properties by computer simulation

7. Calculation of the intersymbol interference in linear channel

8. Solution of the basic tasks of the detection and estimation theory

9. Computer simulation of the AWGN and mobile communication channel

10. Design of the detector for memoryless modulation. Verif. by computer simulation

11. Design of the detector for nonlin. modul. - Viterbi algorithm. Verif. by comp. sim.

12. Computer simulation of selected suboptimal detection algorithms

13. Calculation of the bit error rate for selected modulations and detectors

14. Verif. of the bit error rate for selected modulations and detectors by comp. sim.

Study Objective:

Study materials:

[1] Sýkora, J.: Digitální rádiová komunikace II. Skripta ČVUT, Praha 1997

[2] Proakis, J.G.: Digital communications. 3rd ed., McGraw-Hill, 1995

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Radioelektronika - inženýrský blok (compulsory course)
• Radioelektronika - inženýrský blok (compulsory course)