In this paper, we present a power allocation method for a distributed antenna system (DAS)
to maximize energy efficiency (EE), which is defined as the ratio of the transmission rate to
the total consumed power. Different from conventional EE maximization schemes that
require iterative numerical methods, we derive the optimal solution as a closed form by
solving Karush–Kuhn–Tucker conditions. The obtained closed-form expression is applicable
to DAS with an arbitrary number of distributed antenna (DA) ports and general per-DA port …

In this paper, we present a power allocation method for a distributed antenna system (DAS)
to maximize energy efficiency (EE) which is defined as the ratio of the transmission rate to
the total consumed power. Different from conventional EE maximization schemes which
require iterative numerical methods, we derive the optimal solution as closed form by solving
Karush-Kuhn-Tucker conditions. The obtained closed form expression is applicable to DAS
with an arbitrary number of distributed antenna (DA) ports and general per-DA port power …