Communication Theory

The book contains: Generation and detection of AM wave-spectra-DSBSC, Hilbert Transform, Pre-envelope & complex envelope - SSB and VSB ¿ comparison - Superheterodyne Receiver. Phase and frequency modulation-Narrow Band and Wind band FM - Spectrum - FM modulation and demodulation ¿ FM Discriminator - PLL as FM Demodulator - Transmission bandwidth. 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 a LTI filter. Noise sources and types ¿ Noise figure and noise temperature ¿ Noise in cascaded systems. Narrow band 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. Entropy - Discrete Memoryless channels - Channel Capacity - Hartley - Shannon law - Source coding theorem - Huffman & Shannon - Fano codes.