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http://dx.doi.org/10.7840/KICS.2012.37A.5.339

Dynamic Downlink Resource Management of Femtocells Using Power Control in OFDMA Networks  

Lee, Sang-Tae (성균관대학교 정보통신대학 전자전기공학부)
Ahn, Chun-Soo (성균관대학교 정보통신대학 전자전기공학부)
Shin, Ji-Tae (성균관대학교 정보통신대학 전자전기공학부)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.37, no.5A, 2012 , pp. 339-347 More about this Journal
Abstract
Femtocells as home base station for indoor coverage extension and wideband data service, have been studied with significant interests. When femtocell is deployed, the existing cell structural of changes causes various technical problems. In this paper, we investigate the femto-macro cell interference mitigation in OFDMA system. We propose dynamic downlink resource management scheme which adjust the transmitted power of femtocell according to the strength of received macrocell signal and allocates subcarrier to femtocells in a dynamic manner. In this way, the interference between the macrocell users and femtocells is reduced. The simulation results show that proposed scheme enhances both macrocell and femtocell throughputs.
Keywords
Femtocell; Interference Management; OFDMA; Power Control;
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