Revista: IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, VOL. 68, NO. 3, MARCH 2019 pp. 2052-2065.

Autores: David Oliva; José I. Alonso.

One primary challenge in High Speed Trains (HST) is that mobile communications suffer from severe attenuation and
high Doppler spread in Long Term Evolution-Advanced (LTE-A) scenarios. In this article, a novel two-hop relay architecture is presented by utilizing Mobile Relay Nodes (MRN) and millimeter wave (mmWave) bands at 60 GHz to forward the signal inside the train. A Multiple-Input Multiple-Output (MIMO) channel is established between the Donor-eNB (DeNB) and the Users Equipment (UE) to enhance channel capacity. Finally, performance analysis is studied and discussed by means of a 
downlink-level simulator.