Skip to content


  • Research Article
  • Open Access

A Neural Network MLSE Receiver Based on Natural Gradient Descent: Application to Satellite Communications

EURASIP Journal on Advances in Signal Processing20042004:394715

  • Received: 30 August 2003
  • Published:


The paper proposes a maximum likelihood sequence estimator (MLSE) receiver for satellite communications. The satellite channel model is composed of a nonlinear traveling wave tube (TWT) amplifier followed by a multipath propagation channel. The receiver is composed of a neural network channel estimator (NNCE) and a Viterbi detector. The natural gradient (NG) descent is used for training. Computer simulations show that the performance of our receiver is close to the ideal MLSE receiver in which the channel is perfectly known.

Keywords and phrases

  • neural networks
  • satellite communications
  • high-power amplifiers

Authors’ Affiliations

Electrical and Computer Engineering Department, Queen's University, Kingston, Ontario, K7L 3N6, Canada


© Ibnkahla and Yuan 2004