Radio Systems 1

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

Subject deals with themes of analysis and characteristics of determinate and random signals, signal complex envelope, types of Fourier transform, noise and other disturbing background, codes and coding process, analogue and discrete modulations, signal transmission in communication systems especially with regard to aircraft traffic.

Requirements:

Syllabus of lectures:

1. Signal analysis. Signal characteristics. Types of signals

2. Orthogonal sign. Convolution sign., signal correlation. Sign. stationary processes

3. Periodic, non periodic signal spectrum. Harmonic, nonharmonic signals

4. Fourier series. Fourier transform. Autocorrelation function

5. Discrete Fourier transform. Fast FT. Hilbert transform

6. Random variable. Distribution functions. Stationary charact. Noise background

7. Signal transmission. Linear, non-linear transmission systems. Filters.

8. Codes, coding process. Optimal codes. Hamming distance.

9. Modulated sign. classif. Amplitude mod. DSB, SSB, VSB. AM mod. bandwidths

10. Freq. mod., phase mod. FM, PM modulation bandwidths. Noise in FM, PM

11. Carrierless pulse modulation PAM, PWM, PPM, DPCM. Sampl., quant. proces.

12. S/N relations in communication systems (by analogue and discrete modulations)

13. Discr. modulations M ASK, M FSK, M PSK, R QAM, (MSK, GMSK, O QPSK, ...)

14. Discrete modulated sign., mod. and dem. Intersymbol interference, BER

Syllabus of tutorials:

1. Signal parameters classification - spec. in the aircraft communication systems

2. Characteristic signal spectra calculation. Graphic methods. PC analysis

3. Intersignal correlation calculation. Wiener - Chinchin transform

4. Radiopuls spectrum calculation., limitations. Radar signal characteristics

5. PC autocorrelation process modelling. Information content calculations

6. Complex Fourier series transform calculations. FFT signal proc. instrumentation

7. Noise calculations, thermal and shot noise, quantization noise

8. Signal transmission via filters, filters signal response, signal distortion

9. Practically utilised codes demonstration. Gray codes in DM. Hamming distance

10. AM signal DSB, SSB demonstration, AM depth factor m measuring

11. FM signal modulation char. (Df = f(Umod)) measurement. (S/N)FM relation calcul.

12. PCM parameters calculations for different types of modulating signals

13. Discrete modulation parameters calculation (MSK, GMSK). BER measurement

14. Time reserve, test, credits

Study Objective:

Study materials:

[1] Peebles, P.Z.: Communication System Principles. Adison-Wesley Publishing Company, 1976

[2] Proakis, J.G., Manolakis, D.G.: Introduction to Digital Signal Processing. Macmillan Publishing Company, 1989

[3] Rohde, L.U., Whitaker, J.R.: Communication Receivers. McGraw-Hill, 1997

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Kybernetika a měření-bakalářský blok (compulsory elective course)
• Kybernetika a měření-bakalářský blok (compulsory elective course)