An SVD-Aided Efficient Bit-Loading Algorithm for MIMO Transmission Over Spatially Correlated Channels

  • Authors:
  • Imade Fatani;Marie Zwingelstein-Colin;Mohamed Gharbi;François-Xavier Coudoux;Marion Berbineau;Marc Gazalet

  • Affiliations:
  • Univ Lille Nord de France, Lille, France 59000 and UMR 8520, Department OAE, UVHC, Valenciennes, France 59313 and Univ Hassan Premier, ENSA, Khouribga, Morocco 25000;Univ Lille Nord de France, Lille, France 59000 and UMR 8520, Department OAE, UVHC, Valenciennes, France 59313;Univ Lille Nord de France, Lille, France 59000 and UMR 8520, Department OAE, UVHC, Valenciennes, France 59313;Univ Lille Nord de France, Lille, France 59000 and UMR 8520, Department OAE, UVHC, Valenciennes, France 59313;Univ Lille Nord de France, Lille, France 59000 and IFSTTAR, LEOST, Villeneuve d'Ascq, France 59650;Univ Lille Nord de France, Lille, France 59000 and UMR 8520, Department OAE, UVHC, Valenciennes, France 59313

  • Venue:
  • Wireless Personal Communications: An International Journal
  • Year:
  • 2014

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Abstract

This paper proposes an efficient bit-loading algorithm for Multiple-Input-Multiple-Output transmission over spatially correlated channels with perfect Channel State Information at both link ends. Based on water-filling principle, the algorithm does not assume the well-known gap approximation and accounts for the spatial correlation effects through the initial bit allocation. The result is the optimal distribution of bits and power over the eigenmodes for multiple antenna systems. We report the performance evaluations in the presence of spatial correlation in order to illustrate the efficiency and the robustness of our bit-loading algorithm in realistic environments. The simulation results demonstrate that our algorithm leads to significant improvements. In addition, these results show that our algorithm achieves the maximal diversity order, as well as exhibiting a high extra coding gain.