Wideband chirp modulation for FH-CDMA wireless systems: Coherent and non-coherent receiver structures

C. Gupta, T. Mumtaz, M. Zaman, Antonia Papandreou-Suppappola

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

19 Scopus citations

Abstract

In this paper, we propose a novel signaling scheme based on wideband time-varying chirp signals for frequency-hopped code division multiple access (FH-CDMA) techniques. Our new method has been motivated by the inherent resistance of chirp signals against channel imposed distortions as chirps are bandwidth efficient and robust to fading. Specifically, we combine FH-CDMA with chirp modulation such that every user is identified by a unique set of chirp rates as well as a unique pseudo-noise sequence. Our simulations for additive white Gaussian noise and Rayleigh fading channels successfully demonstrate an increase in performance due to a decrease in multiple access interference. We also propose a signal processing based, non-coherent receiver structure when the chirp rate information is corrupted at the receiver.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Communications
Pages2455-2459
Number of pages5
Volume4
StatePublished - 2003
Event2003 International Conference on Communications (ICC 2003) - Anchorage, AK, United States
Duration: May 11 2003May 15 2003

Other

Other2003 International Conference on Communications (ICC 2003)
CountryUnited States
CityAnchorage, AK
Period5/11/035/15/03

Keywords

  • Fading
  • Frequency-hopped CDMA
  • Time-varying signal processing
  • Wideband chirp signal

ASJC Scopus subject areas

  • Media Technology

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    Gupta, C., Mumtaz, T., Zaman, M., & Papandreou-Suppappola, A. (2003). Wideband chirp modulation for FH-CDMA wireless systems: Coherent and non-coherent receiver structures. In IEEE International Conference on Communications (Vol. 4, pp. 2455-2459)