Clustering and Resource Allocation for Dense Femtocells in a Two-Tier Cellular OFDMA Network

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Provided by: Institute of Electrical & Electronic Engineers
Topic: Mobility
Format: PDF
Small cells such as femtocells overlaying the macrocells can enhance the coverage and capacity of cellular wireless networks and increase the spectrum efficiency by reusing the frequency spectrum assigned to the macrocells in a universal frequency reuse fashion. However, management of both the crosstier and co-tier interferences is one of the most critical issues for such a two-tier cellular network. Centralized solutions for interference management in a two-tier cellular network with Orthogonal Frequency-Division Multiple Access (OFDMA), which yield optimal/near-optimal performance, are impractical due to the computational complexity.
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