RTU 4th sem Computer Engineering B.Tech. Syllabus Fundamentals of Communication

4CS5A Fundamentals OF COMMUNICATION

Unit I

ANALOG MODULATION: Concept of frequency translation. Amplitude
Modulation: Description of full AM, DSBSC, SSB and VSB in time and frequency
domains, methods of generation & demodulation, frequency division multiplexing
(FDM). Angle Modulation: Phase and frequency modulation. Descriptions of FM
signal in time and frequency domains, methods of generation & demodulation, preemphasis
& de-emphasis, PLL.

Unit II

PULSE ANALOG MODULATION: Ideal sampling, Sampling theorem, aliasing,
interpolation, natural and flat top sampling in time and frequency domains.
Introduction to PAM, PWM, PPM modulation schemes. Time division multiplexing
(TDM)

Unit III

PCM & DELTA MODULATION SYSTEMS: Uniform and Non-uniform
quantization. PCM and delta modulation, Signal to quantization noise ratio in PCM
and delta modulation. DPCM, ADM, T1 Carrier System, Matched filter detection.
Error probability in PCM system.

Unit IV

DIGITAL MODULATION: Baseband transmission: Line coding (RZ, NRZ), inter
symbol interference (ISI), pulse shaping, Nyquist criterion for distortion free base
band transmission, raised cosine spectrum. Pass band transmission: Geometric
interpretation of signals, orthogonalization. ASK, PSK, FSK, QPSK and MSK
modulation techniques, coherent detection and calculation of error probabilities.

Unit V

SPREAD-SPECTRUM MODULATION: Introduction, Pseudo-Noise sequences,
direct- sequence spread spectrum (DSSS) with coherent BPSK, processing gain,
probability of error, frequency-hop spread spectrum (FHSS). Application of spread
spectrum: CDMA.