'Institute of Electrical and Electronics Engineers (IEEE)'
Abstract
This paper addresses dynamic resource allocation
(DRA) with power control for the downlink of a Spatial Division
Multiple Access (SDMA) broadband multicellular wireless
packet network with adaptive antennas. The main issue for distributed
DRA is how to manage the intercell interference, which
is very difficult to handle in an uncoordinated environment, due
to packet access and downlink beamforming. The issue of efficiently
performing DRA and power control in such environment
is still open. In this paper we propose to do the slot allocation
distributedly with a rough estimate of the intercell interference,
and the power control and beamforming in a centralized manner,
after the allocation. This keep the computational effort low with
respect to a completely centralized allocation algorithm. We show
that the gap between a distributed algorithm with uncoordinated
power control and a totally centralized allocation algorithm can
be significantly reduced