Transceiver design for digital communication systems, design goals and tradeoffs. Deterministic and random signals. Digital modulation techniques, optimal receiver design, performance analysis under noisy conditions. Digital communication through bandlimited channels. Characteristics of wireless channel, intersymbol interference, channel estimation, adaptive equalization. Synchronization techniques. Multiple access techniques, CDMA, TDMA, FDMA. Principles of OFDM, cyclic prefix, in-band pilots, PAPR, applications of OFDM.