Coordinated Multipoint (CoMP) transmission technique is one method to improve performance of cellular wireless systems, e.g. LTE Advanced, by cooperation of cells for reducing interference and increasing SINR of users in weak radio conditions, e.g. located at cell edge. In this paper, we present an adaptive clustering algorithm to dynamically adjust the cooperation sets of a CoMP system to the UE perceived signal strength in order to maximize the overall system performance while avoiding major system architecture modifications. We show that additional gain in SINR could be achieved compared to non UE-aware fixed cluster with limited increase of system complexity, for a practical adaptive CoMP clustering scheme performing not far from an upper bound UE-specific scheme.
['Ralf Weber', 'Andrea Garavaglia', 'Matthias Schulist', 'Stefan Brueck', 'Armin Dekorsy']
Self-Organizing Adaptive Clustering for Cooperative Multipoint Transmission