Integrated power and subcarrierassignmentby cooperative communications in LTE-A networks

Abstract

The major enhancement of LongTerm Evolution (LTE), namely, LTE-Advanced aims at larger capacity for the users. The specifications of LTE-A include, Downlink(DL) at 3Gbps, Uplink(UL) at 1.5 Gbps spectral efficiency at 30 bps/Hz and Type II relay station. The relay station and the eNodeB (eNB) make use of the same In-Band channel to maximize the available resources. This paper deals with optimal allocation of the Multicarrier scheme, namely, OFDM’s power and subcarrier to maximize DL communication efficiency of multiuser. Sub-carriers are assigned to users having the highest channel quality and using water-filling strategy, the power is allocated. This allocation scheme is assessed against existing schemes and found to be effective. Thus our work aims at introducing power and resource allocation schemes in a LTE-A network.