The non validity of the Gaussian approximation for multi-user interference in ultra wide band impulse radio: from an inconvenience to an advantage

  • Authors:
  • Jocelyn Fiorina;Daniele Domenicali

  • Affiliations:
  • Supélec, Paris, France;School of Engineering, Infocom Department, University of Rome La Sapienza, Italy

  • Venue:
  • IEEE Transactions on Wireless Communications
  • Year:
  • 2009

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Abstract

The huge potential of Ultra Wide Band Impulse Radio (UWB IR) with Multiple Access was initially evaluated using the Standard Gaussian Approximation which assumed that Multi User Interference could be approximated as classical Gaussian noise. Later the Standard Gaussian Approximation has been proved to be unvalid in several cases. Thus the performance of the classical UWB IR correlation receiver dramatically reduces. We show in this paper how the non gaussianity of the Multi User Interference can be exploited, turning the non gaussianity into an advantage, increasing the performance with respect to the Gaussian interference case which was supposed to be too optimistic until now.