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A Domain Decomposition Approach for Preconditioning in Massive MIMO Systems

机译:大规模MIMO系统中预处理的域分解方法。

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摘要

In this work, we investigate devising efficient preconditioners for communication systems based on domain decomposition techniques. In particular, we focus on the uplink of a massive MIMO system and exploit the special structure of the channel cross-correlation matrix to derive improved preconditioners based on Schwarz preconditioning. Up to our knowledge, this is the first attempt to make use of domain decomposition techniques in the design of efficient preconditioners for communication systems. Two additive Schwarz preconditioners are investigated and tested within the context of cancelling inter-antenna interference in massive MIMO systems using two recently proposed parallel interference cancellation detectors. Simulation results reveal substantial improvement in convergence speed compared to the conventional Jacobi and block Jacobi preconditioning.
机译:在这项工作中,我们研究了基于域分解技术为通信系统设计高效的预处理器。尤其是,我们专注于大规模MIMO系统的上行链路,并利用信道互相关矩阵的特殊结构来基于Schwarz预处理得出改进的预处理器。据我们所知,这是在通信系统的有效前置条件设计中利用域分解技术的首次尝试。在使用两个最近提出的并行干扰消除检测器在大规模MIMO系统中消除天线间干扰的背景下,研究并测试了两个附加的Schwarz预调节器。仿真结果表明,与传统的Jacobi和块Jacobi预处理相比,收敛速度有了实质性的提高。

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