Power minimization in MIMO-OFDM network with energy harvesting node using Successive Convex Approximation (SCA) technique

Abstract

In the recent networks, a multiuser downlink MIMO-OFDM (Multiple-Input Multiple-Output Orthogonal Frequency-Division Multiplexing) systems associated with Coordinated Multipoint (CoMP) technique ensures to fulfill the individual rate target across all users is considered. The CoMP technique enables to share the channel superiority measurements and schedules the transmissions, allowing for more efficient radio resource utilization. Though CoMP technique achieves efficient resource allocation it is also required to minimize the power consumption of the MIMO-OFDM network. Thus the optimization issue is framed as a reduction of total transmit power subjected to individual user rate targets and every antenna's power constraints across multiple cooperating base stations. But these optimization parameters are coupled with non-linear terms and they turn out to be highly non-convex. To solve the non-convex issue Successive Convex Approximation (SCA) technique is adopted. In this paper the proposed technique involves the Energy Harvesting relay node being adopted through SCA technique which is named as EH-SCA (Energy Harvesting-Successive Convex Approximation) in the MIMO-OFDM network by which transmit power is tremendously reduced and high user rate targets are achieved than that of existing work. Hence the EH-SCA technique converges to evaluates the performance metrics of MIMO-OFDM network efficiently.