Performance of downlink group-orthogonal multicarrier systems

  • Authors:

  • Felip Riera-Palou;Guillem Femenias;Jaume Ramis

  • Affiliations:

  • Dept. of Mathematics and Informatics, University of the Balearic Islands, Palma de Mallorca, Spain;Dept. of Mathematics and Informatics, University of the Balearic Islands, Palma de Mallorca, Spain;Dept. of Mathematics and Informatics, University of the Balearic Islands, Palma de Mallorca, Spain

  • Venue:
  • PWC'06 Proceedings of the 11th IFIP TC6 international conference on Personal Wireless Communications
  • Year:
  • 2006

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Abstract

Group-orthogonal multi-carrier code division multiple access (GO-MC-CDMA) has recently been proposed as a promising technique for the uplink segment of wireless systems. In this paper we propose and analyze a related scheme, group-orthogonal multi-carrier code division multiplexing (GO-MC-CDM), suitable for the downlink segment. The proposed receiver is shown to offer a similar bit error rate (BER) performance as the downlink version of GO-MC-CDMA at a fraction of its computational complexity. An analytical expression for the BER when using maximum likelihood (ML) detection is derived providing valuable insight into the parameters affecting the system performance and providing a basis for its optimization. Simulation results using parameters and channel models aiming at the next generation of wireless systems are provided confirming the analytically derived results.