A Novel WINNER Based Model for Wireless Communications inside Train Carriages

A new statistical model for describing indoor wideband MIMO channels in train carriages is presented in this paper. Starting from a 3D ray tracing model, the most important parameters to obtain the wideband MIMO channel are investigated. The results are then used following WINNER methodology to create the channel model. To justify and validate this new model, the authors compare the model with the conventional D2b WINNER model, with the output of the 3D ray tracing software and models obtained from measurement campaigns from literature. Parameters such as path loss, delay spread, received power and 4x4 MIMO channel capacity are obtained and compared to validate the model. We show that the proposed D2b WINNER model as indoor train carriage channel model does not fit well with the measurements from a real carriage and the 3D ray tracing simulations. We demonstrate that this new model fits better with the real channel in a train carriage than the general D2b WINNER model.