Analysis of AF Mobile Relay Nodes with Power Control and Link Selection in HSR Scenarios

摘要

In this paper, a theoretical study of the use of Amplify&Forward (A&F) Relay Nodes (RNs) with Power-Control- and-Link-Selection (PCLS), in a High-Speed-Railway (HSR) scenario is presented. The MRNs have been standardized by the 3GPP and is one of the proposed solutions to improve the Quality of Service (QoS) and the user’s throughput on vehicles in high mobility scenarios. Nevertheless, many items have not been investigated in depth until now, like transmission power control in the MRNs and link selection by on-board users. Under this hypothesis, firstly a Power-Control-and-Link-Selection (PCLS) algorithm is developed. In addition, the advantages of using Multiple-Input and Multiple-Output (MIMO) schemes, Resource Allocation (RA) together with Beamforming techniques have been analyzed. Numerical simulations indicate that the combination of PCLS with MIMO capacities and RA-Beamforming schemes in the MRNs substantially improves the throughput of on-board users and reduces the transmission power of MRNs.