Introduction to information theory. Passband power spectral analysis. Time-division multiplexing (TDM). Digital carrier modulation: ASK, PSK, DPSK, FSK, MSK, GMSK, QPSK, M - ary transmission. Bandwidth efficiency. Coherent and non-coherent detection. Noise effects on digital modulation techniques. Matched filters. Probability of error in carrier modulation. Study of several digital systems which may include: TDM system hierarchies and digital FAX. Pre-req.: COME 382.