Theory of digital modulation and coding. Optimum receivers in Gaussian noise. Signal space and decision theory. Signal design. Bandwidth and dimensionality. Fundamental limits in coding and modulation. Capacity and cutoff rate. Block, convolutional and trellis coding. Continuous phase modulation. Filtered channels and intersymbol interference. Equalization. Spread-spectrum. Fading channels. Current topics. It addresses the following topics: review of digital modulation techniques and maximum likelihood detectors, fading channels, diversity techniques, multiple-input multiple-output (MIMO) systems, space-time coding, and orthogonal frequency-division multiplexing (OFDM).