Joint power control and sub-channel allocation for co-channel OFDMA femtocells

S. Kazemi, M. Rasti
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引用次数: 6

Abstract

Two-tier networks consisting of macrocell and femtocells are provided as a solution to increase capacity and improve indoor coverage of cellular networks. In two-tier networks, when the spectrum is shared by macrocell and all of femtocells, the cross-tier and co-tier interference should be taken into account. In this paper, we investigate the power control problem of minimizing the aggregate transmit power for macro-tier and the joint power control and sub-channel allocation problem of maximizing the total rate for femto-tier, both in uplink transmission, while the cross-tier and co-tier interference are both taken into account. Then, to solve these problems, we propose distributed sub-optimal algorithms for both macro and femto-tier. Finally, simulation results are presented to confirm out performance of our proposed algorithm and to compare with the existing algorithm.
同信道OFDMA飞基站的联合功率控制与子信道分配
提出了一种由宏蜂窝和飞蜂窝组成的两层网络的解决方案,以增加蜂窝网络的容量和改善室内覆盖。在两层网络中,当宏蜂窝和所有飞蜂窝共享频谱时,应考虑跨层和共层干扰。本文研究了在考虑跨层和协层干扰的情况下,宏观层以最小总发射功率为目标的功率控制问题和飞向层以最大总速率为目标的联合功率控制和子信道分配问题。然后,为了解决这些问题,我们提出了宏观层和飞层的分布式次优算法。最后给出了仿真结果,验证了本文算法的性能,并与现有算法进行了比较。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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