Introduction to telephony and traffic theory. Calculating the probability of blocking for parallel and series links. Cellular communication design and frequency re-use patterns. Performance enhancement by proper cell site design and sectorization. C/I ratio calculations. Traffic management, call setup and hand-off. Propagation models: Knife edge model and effect of multiple edges. Fading: small-scale, frequency-selective, and Doppler shift. Modulation for cellular systems. Cellular telephony standards and systems: 1G, 2G, 3G, 4G, 5G, etc. Voice coders and compression formats for cellular systems. Error correcting and convolutional codes. Interleaving and deinterleaving. Encryption and decryption in cellular systems. Case studies.