The problem of minimizing the total power consumption while satisfying different quality-of-service requirements in a two-hop multiple-input multiple-output network with a single non-regenerative relay is considered. As shown by Y. Rong in [1], finding the solution to this problem is hard as it is not in a convex form. To overcome this difficulty, in this work a novel approach is proposed that allows to closely approximate the solution of the non-convex problem with that of a convex one easy to solve in closed-form by means of a multi-step procedure of reduced complexity. Computer simulations are used to assess the performance of the proposed solution and to make comparisons with existing alternatives.
Power Allocation in Two-Hop Amplify-and-Forward MIMO Relay Systems with QoS requirements
SANGUINETTI, LUCA;D'AMICO, ANTONIO ALBERTO
2011-01-01
Abstract
The problem of minimizing the total power consumption while satisfying different quality-of-service requirements in a two-hop multiple-input multiple-output network with a single non-regenerative relay is considered. As shown by Y. Rong in [1], finding the solution to this problem is hard as it is not in a convex form. To overcome this difficulty, in this work a novel approach is proposed that allows to closely approximate the solution of the non-convex problem with that of a convex one easy to solve in closed-form by means of a multi-step procedure of reduced complexity. Computer simulations are used to assess the performance of the proposed solution and to make comparisons with existing alternatives.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
