Multi-user schemes using nonlinear time-varying modulation

Srinivasa Machineni, Hao Shen, Antonia Papandreou-Suppappola

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Scopus citations


We propose to optimally reduce multiple access interference in multi-user systems using modulation schemes based on time-varying signals with nonlinear phase function. This minimization is achieved by deriving constraints on the frequency modulation parameters of these signals. The success of the new method over frequency-shift keying signaling is demonstrated in frequency-hopped code division multiple access (FH-CDMA) systems. In addition, we propose to estimate the transmitted symbol information at the receiver using time-varying processing techniques based on unitary versions of the optimal periodogram spectral estimator.

Original languageEnglish (US)
Title of host publicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
StatePublished - 2004
EventProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing - Montreal, Que, Canada
Duration: May 17 2004May 21 2004


OtherProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing
CityMontreal, Que

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Signal Processing
  • Acoustics and Ultrasonics


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