Abstract

Decentralized dynamic spectrum allocation (DSA) that exploit adaptive antenna array interference mitigation (IM) diversity at the receiver, is proposed for interference-limited environments with high level of frequency reuse. The system consists of base stations (BSs) that may belong to different providers in license-exempt spectrum, who can optimize uplink frequency allocation to their subscriber stations (SSs) to achieve the least impact of IM on the useful signal, assuming no control over band allocation of other BSs sharing the same bands. The IM-based DSA algorithms based on a "good neighbor" decentralized DSA strategies are proposed. The new strategy introduces controllable behavior of decentralized networks, which promises a practical perspective for IM-based DSA algorithms even without guarantee of the network convergence to stationary points.

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