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Extended Detection for MIMO Systems with Partial Incremental Redundancy Based Hybrid ARQ

机译:基于部分增量冗余的混合ARQ的MIMO系统扩展检测

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摘要

In this paper, an extended detection scheme is proposed for multiple-input multiple-output (MIMO) systems which employ partial incremental redundancy (IR) based hybrid automatic repeat request (HARQ). Based on the extended MIMO system model that interprets multiple retransmissions as a single transmission, the extended detection scheme estimates the entire transmitted symbols utilizing all information obtained up to the current retransmission. Compared with the conventional zero-forcing (ZF) detection scheme, the extended ZF detection scheme improves the post-processing signal-to-noise ratio (PSNR) of the newly transmitted symbols in every retransmission, as well as the repeatedly transmitted symbols. Simulation results verify that the extended detection scheme outperforms the conventional detection scheme. Simulation results also show that the extended minimum mean-square-error (MMSE) detection scheme can achieve a better error performance than the conventional maximum-likelihood (ML) detection scheme, and even the extended ZF detection scheme shows a comparable error performance to the conventional ML detection scheme.
机译:在本文中,提出了一种扩展的检测方案,用于采用基于部分增量冗余(IR)的混合自动重发请求(HARQ)的多输入多输出(MIMO)系统。基于将多个重传解释为单个传输的扩展MIMO系统模型,扩展检测方案利用直到当前重传之前获得的所有信息来估计整个传输符号。与传统的零强制(ZF)检测方案相比,扩展的ZF检测方案提高了每次重传中新发送的符号以及重复发送的符号的后处理信噪比(PSNR)。仿真结果验证了扩展检测方案优于常规检测方案。仿真结果还表明,扩展的最小均方误差(MMSE)检测方案可以实现比常规最大似然(ML)检测方案更好的误码性能,甚至扩展的ZF检测方案也可显示与传统最大似然检测方案相当的误码性能。传统的ML检测方案。

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