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Performance Evaluation of Adaptive MIMO-OFDM Systems with Limited Feedback Using Measurement Based Channel Models

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Abstract

Performance evaluation of enhanced link adaptation method for MIMO-OFDM systems with limited feedback using measurement based channels and a stochastic channel model is presented in this paper. In particular, impact of practical channel estimation and feedback errors on link performance is analyzed. An adaptive spatial and modulation scheme selection process is based on the effective signal-to-interference-plus-noise ratio (ESINR). Mutual information effective SINR mapping method is applied for calculating ESINR values due to its capability of accurate estimation of the error rate performance of large variety of MIMO channels. Numerical results show that simple adaptive systems that switch between diversity/multiplexing or beamforming/multiplexing schemes obtain relatively good performance in realistic 2 × 2 MIMO channels. It is also shown that the imperfect channel estimation and feedback errors can have significant impact on the link performance. Furthermore, it is noticed that using the stochastic channel model in performance simulations can give rather pessimistic results compared to true measurement data.

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Acknowledgments

During this work the first author was supported in part by the Nokia Foundation and the Finnish Foundation for Technology Promotion.

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Authors and Affiliations

  1. Centre for Wireless Communications, University of Oulu, P.O. Box 4500, 90014, Oulu, Finland

    Harri Pennanen, Jouko Leinonen & Matti Latva-aho

  2. Kolster Oy Ab, Elektroniikkatie 8, 90570, Oulu, Finland

    Mikko Alatossava

Authors
  1. Harri Pennanen
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  2. Mikko Alatossava
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  3. Jouko Leinonen
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  4. Matti Latva-aho
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Corresponding author

Correspondence to Harri Pennanen.

Additional information

Parts of this work have been presented at the International Symposium on Wireless Personal Multimedia Communications, Lapland, Finland, September 8–11, 2008 and at the Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, USA, October 26–29, 2008. The second author was with the Centre for Wireless Communications when the channel measurements and modeling related to Sect. 4 were performed.

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Pennanen, H., Alatossava, M., Leinonen, J. et al. Performance Evaluation of Adaptive MIMO-OFDM Systems with Limited Feedback Using Measurement Based Channel Models. Int J Wireless Inf Networks 18, 1–10 (2011). https://doi.org/10.1007/s10776-011-0130-8

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  • DOI: https://doi.org/10.1007/s10776-011-0130-8

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