Distributed Algebraic Space-Time Codes for Ultra-Wideband Communications

  • Authors:
  • Chadi Abou-Rjeily;Norbert Daniele;Jean-Claude Belfiore

  • Affiliations:
  • Laboratory of Electronics and Information Technology (CEA-LETI), Grenoble, France 38054;Laboratory of Electronics and Information Technology (CEA-LETI), Grenoble, France 38054;École Nationale Supérieure des Télécommunications (ENST), Paris, France 75013

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2007

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Abstract

In this paper, we extend the Amplify-and-Forward cooperative diversity scheme to the context of impulse radio ultra-wideband. In particular, we present the construction of two families of distributed algebraic space-time codes. The first family is based on totally real cyclic division algebras. The second family encodes the pulses used to transmit one information symbol and permits to achieve high-performance levels with lower complexity. Both families of codes achieve full rate, full diversity with non-vanishing determinants with various numbers of relays. Simulations performed over realistic indoor UWB channel models show important performance gains.