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Authors
Affiliations
1 Department of Electrical Engineering, Indian Institute of Technology Bombay, IN
2 CCSR, University of Surrey, Guildford, GB
Source
ICTACT Journal on Communication Technology, Vol 2, No 2 (2011), Pagination: 300-313
Abstract
In a multi-cell scenario, the inter-cell interference (ICI) is detrimental in achieving the intended system performance, in particular for the edge users. There is paucity of work available in literature on ICI coordination (ICIC) for relay-assisted cellular networks (RACN). In this paper, we do a survey on the ICIC schemes in cellular networks and RACN. We then propose a self-organized resource allocation plan for RACN to improve the edge user's performance by ICIC. We compare the performance of reuse-1, reuse-3, soft frequency reuse (SFR) scheme, proposed plan with and without relays. The performance metrics for comparison are edge user's spectral efficiency, their signal-to-interference-and-noise ratio (SINR) and system's area spectral efficiency. We show by the simulation results that our proposed plan performs better than the existing resource allocation schemes in static allocation scenario. Next, we propose to make our resource allocation plan dynamic and self-organized. The distinct features of our proposed plan are: One, it achieves a trade-off between the system's area spectral efficiency and the edge user's spectral efficiency performance. Secondly, it introduces a novel concept of interfering neighbor set to achieve ICIC by local interaction between the entities.
Keywords
Area Spectral Efficiency, Edge Users, Inter-Cell Interference Coordination (ICIC), Orthogonal Frequency Division Multiple Access (OFDMA), Relay-Assisted Cellular Networks (RACN).
