Status : Published 
Date : 2014-10 
Title : Spectrum Reuse with Power Control for Two-Tier Femtocell Networks 
Authors : 김영주, 왕한호, 홍대식 
Journal : 전자공학회논문지 
Abstract : This paper considers two-tier networks consisting of macrocells and femtocells operating in the same spectrum. This paper proposes a femtocell spectrum reuse scheme that determines the shared spectrum and transmit power for the femtocells to mitigate the effects of cross-tier interference between the macrocells and femtocells. The proposed scheme provides macrocell throughput that is unaffected by the increasing number of femtocells per cell site and improves the femtocell signal quality at the same time by limiting the cross-tier interference. This study analyzed the per-tier signal-to-interference ratio (SIR) and outage probability of the proposed scheme to investigate the macrocell and femtocell performance. The total throughput of the proposed scheme was analyzed based on the outage probabilities. The analysis and numerical results proved that high femtocell throughput can be achieved using only a small fraction of the spectrum while protecting the macrocell throughput. As a result, an improved total throughput was achieved enforcing higher spatial reuse. 
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» [전자공학회논문지] 김영주, 왕한호, 홍대식, "Spectrum Reuse with Power Control for Two-Tier Femtocell Networks" Published  2014-10 
1 [전자공학회논문지] 김형종, 왕한호, 임성묵, 홍대식, "On Power Allocation Schemes for Bi-directional Communication in Spectrum Sharing-based Cognitive Radio System" Published  2014-10