Multiuser Detection and Channel Estimation for Multibeam Satellite Communications
Helmi Chaouech · International journal of Computer Networks & Communications · 2012
In this paper, iterative multi-user detection techniques for multi-beam communications are presented.The solutions are based on a successive interference cancellation architecture and a channel decoding to treat the co-channel interference.Beams forming and channels coefficients are estimated and updated iteratively.A developed technique of signals combining allows power improvement of the useful received signal; and then reduction of the bit error rates with low signal to noise ratios.The approach is applied to a synchronous multi-beam satellite link under an additive white Gaussian channel.Evaluation of the techniques is done with computer simulations, where a noised and multi-access environment is considered.The simulations results show the good performance of the proposed solutions.