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Interference Avoidance through Dynamic Downlink OFDMA Subchannel Allocation using Intercell Coordination

机译：通过使用InterCell协调的动态下行链路通过动态下行链路进行干扰避免

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OFDMA subchannel allocation has been well-studied. However, most of the available literature considers a single cell system without cochannel interference. We present a novel intercell interference avoidance scheme, in which the downlink OFDMA subchannels are allocated through intercell coordination in a multicell environment. The proposed scheme not only aims to achieve maximized network throughput but also focuses on providing improved throughput for cell or sector edge users that are most affected by intercell interference. Enhanced cell edge performance may result in fewer base stations needed to cover a region; this, in turn, may yield substantial savings in deployment cost. The scheme is comprised of two different algorithms; one at the base station level, and the other at a central controller to which a group of neighboring base stations are connected. The performance of the proposed scheme is compared with that of a reference scheme in which coordination is not employed. It is observed from simulation results that the proposed scheme outperforms the reference scheme in terms of network and cell edge throughput.
机译：OFDMA子信道分配已经很好地研究过。然而，大多数可用文献都认为没有Cochannel干扰的单个单元系统。我们提出了一种新颖的InterCell干扰避免方案，其中通过多单元环境中的InterCell协调分配了下行链路的下行链路。拟议方案不仅旨在实现最大化的网络吞吐量，而且还专注于为受电机干扰影响最大的细胞或扇区边缘用户提供改进的吞吐量。增强的细胞边缘性能可能导致覆盖区域所需的较少基站;反过来，这可以在部署成本中产生大量节省。该方案由两种不同的算法组成;在基站级别，另一个在基站级别连接到其中一组相邻基站的中央控制器。将拟议方案的性能与参考方案的表现进行比较，其中不采用协调。从仿真结果观察到所提出的方案在网络和细胞边缘吞吐量方面优于参考方案。

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