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This paper presents a game-theoretic approach of power allocation in two-tier OFDMA femtocell networks. A dual-utility based non-cooperative game with pricing is formulated for effectively allocating power on each sub-channel, targeting at maximizing energy efficiency for each macro BS and protecting the SINR for each femto BS for customers' interests, under power constraints in each sub-channel....
Due to large-scale and self-deployed of femtocells overlaid on traditional cellular networks, serious cross- and co-tier interference may arise without good coordination. To address this problem, this paper proposes a distributed power control scheme for the uplink transmission of two-tier OFDMA femtocell networks. Two models are considered: single-channel femtocell networks and multiple-channel femtocell...
This paper investigates the downlink power allocation problem to mitigate the cross- and co-tier interference in the spectrum-sharing two-tier OFDMA femtocell network, which are comprised of macrocells underlaid with femtocells. The problem is formulated as a non-cooperative game with dual-utility. To achieve green radio access, the objective of the utility for each macro BS is to maximize its energy...
In order to suppress cross-tier interference (CTI) and inter-cell interference (ICI) between adjacent macrocells, this paper proposes an effective resource allocation scheme for the two-tier OFDMA femtocell networks, in which macro BSs adopt the soft frequency reuse (SFR) strategy. Consider that macrocell users (MUEs) are prior to femtocell users (FUEs), firstly the subbands are allocated to MUEs...
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