Institute of Electrical & Electronic Engineers
Each new generation of wireless communication systems promises to support a larger number of mobile users with higher data rates, new applications and ever-more stringent Quality of Service (QoS) requirements. The authors propose a four-stage hierarchical resource allocation scheme for the downlink of a large-scale small-cell network in the context of Orthogonal Frequency-Division Multiple Access (OFDMA). Since interference limits the capabilities of such networks, resource allocation and interference management are crucial. However, obtaining the globally optimum resource allocation is exponentially complex and mathematically intractable. Here, they develop a partially decentralized algorithm to obtain an effective solution.