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Domain Decomposition Based PIC Detectors for Massive MIMO

机译：基于域分解的PIC检测器，用于大规模MIMO

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摘要

In this work, we investigate the use of domain decomposition techniques in developing novel block-wise PIC detectors for communication systems. Specifically, we consider the cancellation of inter-antenna-interference in the uplink of massive MIMO systems and develop a new block-wise PIC detector based on additive Schwarz method. Up to our knowledge, this is the first time domain decomposition techniques are applied within the wireless communication field. Careful inspection of the channel cross-correlation matrix reveals the fact that the latter has a special structure which supports the use of block iterative methods. We exploit this fact and develop a block-wise PIC detector that is suitable for implementation on parallel processors. Convergence analysis and the impact of various parameters such as the level of overlap and the number of blocks on the convergence behavior of the novel PIC detector are considered. Simulation results show important improvement in convergence speed compared to the conventional linear PIC detector.
机译：在这项工作中，我们研究了域分解技术在开发用于通信系统的新型块明智的PIC检测器中的使用。具体而言，我们考虑取消大规模MIMO系统的上行链路中的天线干扰，并基于添加性SCHWARZ方法开发新的块状PIC检测器。符合我们的知识，这是第一时域分解技术应用于无线通信领域。仔细检查通道交叉相关矩阵揭示了后者具有支持块迭代方法的特殊结构的事实。我们利用此事实，并开发一个块状PIC检测器，适用于并行处理器的实现。考虑了收敛性分析和各种参数的影响，例如重叠水平和新颖PIC检测器的收敛行为上的块数。与传统的线性PIC检测器相比，仿真结果表明收敛速度的重要提高。

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