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首页> 外文期刊>Signal Processing, IET >Doubly iterative multiple-input–multiple-output-bit-interleaved coded modulation receiver with joint channel estimation and randomised sampling detection
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Doubly iterative multiple-input–multiple-output-bit-interleaved coded modulation receiver with joint channel estimation and randomised sampling detection

机译：具有联合信道估计和随机采样检测的双迭代多输入多输出比特交织编码调制接收机

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摘要

In this study, the authors propose a lattice reduction (LR)-based doubly iterative receiver for joint channel estimation and detection in multiple-input–multiple-output (MIMO) bit-interleaved coded modulation systems. For the inner iteration loop of the receiver, LR-based randomised sampling detection is employed to enjoy the tradeoff between performance and complexity while for the outer iteration loop, the expectation–maximisation (EM)-based iterative channel estimation using sampling results is proposed to achieve the maximum likelihood channel estimation performance. Besides, a modified computational efficient EM-based channel estimation approach is also derived to reduce the complexity further. Simulation results demonstrate that the proposed doubly MIMO iterative receiver can have comparable bit-error rate performance with a reasonable computational complexity.
机译：在这项研究中，作者提出了一种基于格网约简（LR）的双迭代接收机，用于多输入多输出（MIMO）比特交织编码调制系统中的联合信道估计和检测。对于接收机的内部迭代环路，采用基于LR的随机采样检测来享受性能和复杂度之间的折衷，而对于外部迭代环路，则建议使用采样结果的基于期望最大化（EM）的迭代信道估计获得最大似然信道估计性能。此外，还提出了一种改进的基于EM的高效计算信道估计方法，以进一步降低复杂度。仿真结果表明，所提出的双MIMO迭代接收器可以具有相当的误码率性能，并且具有合理的计算复杂度。

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