Bandwidth Efficiency and Probability of Error Performance of MSK and Offset QPSK Systems. - Douglas H. Morais; Kamilo Feher (IEEE Trans. Commun., 1979)

The Effects of the Amplitude and Delay Slope Components of Frequency Selective Fading on QPSK, Offset QPSK and 8 PSK Systems. - Douglas H. Morais; Ake Sewerinson; Kamilo Feher (IEEE Trans. Commun., 1979)

The Effects of Filtering and Limiting on the Performance of QPSK, Offset QPSK, and MSK Systems. - Douglas H. Morais; Kamilo Feher (IEEE Trans. Commun., 1980)

NLA-QAM: A Method for Generating High-Power QAM Signals Through Nonlinear Amplification. - Douglas H. Morais; Kamilo Feher (IEEE Trans. Commun., 1982)

Novel non-square, Gray coded, 64-QAM constellations. - Douglas H. Morais (RWS, 2015)

Key 5G Physical Layer Technologies - Enabling Mobile and Fixed Wireless Access - Douglas H. Morais (Springer, 2020)