Downlink Scheduling With Transmission Strategy Selection for Two-Cell MIMO Networks

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Executive Summary

Multiple-Input Multiple-Output (MIMO) processing is a promising technique to achieve high speed data service in next generation cellular networks. However, the performance of multi-cell MIMO networks is limited by the cell-edge users who experience significant inter-cell interference. In this paper, the authors propose to use interference alignment to mitigate interference experienced by these cell-edge users, and spatial multiplexing for users with less interference. To achieve the optimal performance in a two-cell MIMO network, they formulate a joint scheduling problem to select a pair of users and the corresponding transmission strategies for both cells.

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