Interference Mitigation through Self-Organization in OFDMA Femtocells
Journal
22nd IEEE Personal Indoor Mobile Radio Communications (PIMRC-2011)
Pages
76-80
Date Issued
2011-09
Author(s)
Abstract
This work proposes an adaptive intercell interference avoidance scheme for the self-organization in Orthogonal Frequency Division Multiple Access (OFDMA) femtocell networks. Due to the expected large number of user-deployed cells, the femtocell networks suffers from the intercell interference problem. In this paper, we define the self-organizing resource allocation problem to maximize resource efficiency with OFDMA architecture. The proposed problem formulation supports the desired Quality of Service (QoS) criteria while satisfying reliability constraints. We develop an autonomous resource allocation algorithm to pursue the most efficient frequency allocation. From the simulation results, the proposed approaches can increase the system throughput by over 13%, while the femtocell interference can be avoided completely. © 2011 IEEE.
Subjects
Femtocell; interference avoidance; OFDMA; resource reuse
Other Subjects
Intercell interference; Interference avoidance; Interference mitigation; OFDMA; Orthogonal frequency division multiple access; Problem formulation; Reliability constraints; Resource allocation algorithms; Resource allocation problem; Resource efficiencies; Resource reuse; Self organizing; System throughput; Algorithms; Femtocell; Frequency allocation; Quality of service; Radio interference; Resource allocation; Frequency division multiple access
Type
conference paper