Multi-user schemes using nonlinear time-varying modulation. - Srinivasa Machineni; Hao Shen 014; Antonia Papandreou-Suppappola (ICASSP (4), 2004)

Time-varying multichirp rate modulation for multiple access systems. - Hao Shen 014; Srinivasa Machineni; Charu Gupta; Antonia Papandreou-Suppappola (IEEE Signal Process. Lett., 2004)