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The next generations of wireless networks use OFDMA (Orthogonal Frequency Division Multiple Access) as the down-link radio transmission technology. With OFDMA, there is negligible interference between transmissions within a sector. However, since transmissions in neighboring sectors may use the same frequency resources then such transmissions can cause interference. If this interference is too high then it negatively impacts the transmission rates achievable by users near the edge of the cell. Several approaches have been proposed to manage this cross-sector interference to achieve high sector throughput as well as acceptable performance for users near the cell edge.
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