基于OFDMA的Femtocell网络的高效频谱分配方案

An Efficient Spectrum Allocation Scheme Based on OFDMA for Femtocell Network

提出了一种自适应的频谱分配方案,以减轻两层OFDMA网络的共信道干扰。该方案利用正交动态频谱共享以减少宏蜂窝和毫微微蜂窝间的跨层干扰。在该方案中,基于家庭基站间的潜在干扰,采用不同的频谱分配策略,以降低共层干扰和协调之间的信令开销。仿真结果验证了宏蜂窝和毫微微蜂窝用户的性能。

This paper presents an adaptive spectrum allocation scheme to mitigate the co-channel interference lbr two-tier OFDMA networks. The proposed allocation scheme utilizes a dynamic orthogonal spectrum sharing between macrocell and femtocell to reduce the cross-tier interference. It adopts different spectrum allocation strategies according to the potential interference between femtocells to reduce co-tier interference and coordinate signaling overhead. Simulation results verify the performances of both macrocell and femtocell users.