Discussion on Strategies for Adaptive Dynamical Clustering in Cooperative Multi-point Downlink Transmission Systems
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Abstract
As one of the most promising techniques for next generation wireless communication, coordinating transmission by multiple points (i.e. radio access points or base stations) have recently attracted a lot of attention because of its potential for intercell co-channel interference mitigation and significant spectral efficiency improvement. This paper firstly presents the system structure and mathematical signal model for multipoint coordinating downlink transmission, and then gives a detailed discussion on dynamical cell-clustering strategies, scheduling utility-metric and resources allocation scheme in adaptively forming cooperation cluster of cells based on detected system parameters, where the user is serviced by a cluster selected from a set of clusters that has been adapted to its particular network circumstance and location. Some numerical analysis shows that with dynamical cell-clustering, a clustered supercell with 7-cell is relatively reasonable for spectral efficiency improvement. Also, some simulation results are given to show that adaptive dynamical cell-clustering methods are more beneficial to user performance improvement.
Keywords
MIMO systems Cooperative communication Multiple points Dynamical cell-clusteringPreview
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