A static power control allocation assigns power levels to the nodes that do not change frequently over time, unless there are drastic changes in the network topology.
The proposed two-step resource allocation scheme can be implemented in different time scales, i.e., the inter-cluster interference mitigation would be more static than the intra-cluster scheduling and power allocation performed in the second step.
Note that in realistic scenarios, the two-step approach can be implemented in different time scales, i.e., the inter-cluster interference mitigation would be more static than the intra-cluster scheduling and power allocation performed in the second step.
Also in this paper according to the number of static clusters considered in Section 5, the proposed power allocation algorithm is simulated in three disjoint dynamic clusters which are requested more than others.
These power allocation schemes assume that the channels are static and do not take into account fading channels, for which meeting a strict distortion constraint may not be always possible.
The result of simulating the power allocation algorithm for cell edge users of static clusters is illustrated in Fig. 15 a which shows that the needed power level of this user is approximately provided by the BS of its cell and two other coordinated BSs of the cluster have negligible role in affording the QoS of the user.
Power allocation: what is the optimal power allocation policy for each SU in its allocated bands?
The BF matrix with power allocation forms the precoding matrix, W ¯. Consider the downlink of a static cluster of K BSs with NT antennas serving M single antenna UTs [7].
Moreover, we assume that UE scheduling, beamforming design, transmission rank selection, and power allocation are performed, as described in Sections 2.2 and 3.1, also for the static schemes: in particular, UEs are served by using MET [25] with equal power allocation among the eigenmodes and a greedy UE selection is performed within each BS cluster.
This decreases the static power.
The closed-form expressions of power allocation are also given.
