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COMMUNICATION THEORY: Beginner Guide
COMMUNICATION THEORY UNIT I AMPLITUDE MODULATION 9 Generation and detection of AM wave-spectra-DSBSC, Hilbert Transform, Pre-envelope & complex envelope - SSB and VSB comparison -Superheterodyne Receiver. 9 Phase and frequency modulation-Narrow Band and Wind band FM - Spectrum - FM modulation and demodulation FM Discriminator- PLL as FM Demodulator - Transmission bandwidth. 9 Random variables, Central Limit Theorem, Random Process, Stationary Processes, Mean, Correlation & Covariance functions, Power Spectral Density, Ergodic Processes, Gaussian Process, Transmission of a Random Process Through an LTI filter. 9 Noise sources and types Noise figure and noise temperature Noise in cascaded systems. Narrowband noise PSD of in-phase and quadrature noise Noise performance in AM systems Noise performance in FM systems Pre-emphasis and de-emphasis Capture effect, threshold effect. 9 Entropy - Discrete Memoryless channels - Channel Capacity -Hartley - Shannon law - Source coding theorem - Huffman & Shannon - Fano codes Read more