Channel prediction for OFDMA using mixtures of experts

  • Authors:
  • H. M. S. B. Senevirathna;K. Yamashita

  • Affiliations:
  • Intelligent Information Communication Lab, Department of Electrical and Informationc Systems, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, J ...;Intelligent Information Communication Lab, Department of Electrical and Informationc Systems, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka, 599-8531, J ...

  • Venue:
  • International Journal of Knowledge-based and Intelligent Engineering Systems
  • Year:
  • 2006

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Abstract

Channel prediction is the key requirement in adaptive transmission techniques such as adaptive modulation, adaptive coding and adaptive power control. This paper presents a novel self organizing map (SOM) based channel predictor for the downlink of an orthogonal frequency-division multiple access (OFDMA) system. The proposed predictor uses a Kalman trained-SOM backed mixtures of experts (ME) modular neural network. The performance of the predictor is evaluated on an OFDMA system with a system delay where a channel prediction is needed.