Simple iterative receivers for MIMO LP-OFDM systems

Récepteur Itératif Simple pour Systèmes Mimo-Ofdm et à Précodage Linéaire


In this paper,Lp-ofdm is combined with differentMimo schemes in order to improve performance in terms of diversity gain and to exploit capacity brought by theMimo channel. The original contribution is the development of a generic iterative receiver designed forLp mimo transmission able to work whatever the antenna configuration and the spatial coding scheme. By using a globalMmse criterion, interference terms coming from space-time coding and linear precoding are jointly treated leading to a very good trade-off between performance and complexity compared to trellis based detectors particularly for high order modulations, high number of antennas and/or large size of precoding matrices.


Dans cet article, le précodage linéaire est associé à différents schémas multi-antennes dans un contexteOfdm afin d’améliorer les performances en termes d’exploitation de diversité et de capacité offertes par les canaux multi-antennes. La contribution originale est de proposer un récepteur itératif générique pour schémasLp-mimo pouvant s’adapter à n’importe quelle configuration d’antennes et de codage spatio-temporel. Les termes d’interférence qui proviennent du précodage linéaire et du codage spatio-temporel sont traités conjointement en utilisant un critère de minimisation de l’erreur quadratique moyenne globale. Le récepteur obtenu permet d’obtenir un très bon compromis entre les performances et la complexité de mise en ?uvre comparé à des détecteurs à base de treillis en particulier pour les modulations à nombre d’états élevé, des systèmes à plusieurs antennes d’émission et de réception et/ou des grandes tailles de matrice de précodage.

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Most of results presented in this paper have been obtained during the PhD thesis of P.-J. Bouvet and V. Le Nir at France Telecom R&D.

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Bouvet, PJ., Hélard, M. & Le Nir, V. Simple iterative receivers for MIMO LP-OFDM systems. Ann. Télécommun. 61, 578–601 (2006).

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Key words

  • Radiocommunication
  • Space diversity
  • Ofdm
  • Jeu signal
  • Itération
  • Transformation linéaire
  • Récepteur
  • Simulation

Mots clés

  • Radiocommunication
  • Diversité spatiale
  • Ofdm
  • Constellation signal
  • Itération
  • Linear transformation
  • Receiver
  • Simulation