Joint Beamforming, Scheduling, and Power Allocation for Hierarchical Cellular Systems

The idea of Cognitive Radio (CR) has embodied concretely in hierarchical cellular systems by deploying an underlying microcellular system to reuse the underutilized spectrum licensed by an macrocellular system. The fundamental challenges for successfully realizing such hierarchical systems are to manage the intercell interference between the macrocell and microcell and to pursue the goal of maximizing the spectrum recycling efficiency. In this paper, the authors jointly consider antenna beamforming, power allocation, and multiuser scheduling for the microcellular system to opportunistically utilize the uplink spectrum of the macrocell and to concurrently serve multiple secondary users in the downlink.

Provided by: Institute of Electrical & Electronic Engineers Topic: Mobility Date Added: May 2012 Format: PDF

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