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基于对数似然比的Chase型MIMO-HARQ合并检测方案

Novel MIMO-HARQ receiving schemes with Chase combining based on log-likelihood ratio
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摘要 MIMO-HARQ系统具有MIMO系统高信息传输率和HARQ系统的高可靠性。将球形译码算法用于MIMO-HARQ,提出了基于对数似然比(LLR)的Chase合并MIMO-HARQ的几种球形译码方案(SLC-ISD、SLC-IISD、BLCSD)。在各次传输中,采用"候选列表"保存各信号点的LLR。分析和仿真表明,相对ML检测算法,所提方案具有很好的性能与复杂度之间的折中,可应用于Chase合并和增量冗余(IR)合并中。 Multiple-input multiple-output（MIMO） systems with Hybrid Automatic Repeat reQuest（HARQ） promises high throughput with high reliability.Some novel sphere decoding MIMO-HARQ receiving algorithms with Chase combining schemes（SLC-I SD,SLC-II SD,BLC SD） are proposed based on the log-likelihood ratio（LLR）.Using a ＂list of candidate＂ version of the sphere decoder,a simple method to save the bit LLR in every transmission is provided.With the analyses and the simulations,the suggested algorithms have better tradeoff of performance and complexity and they can be used for MIMO-HARQ systems with either Chase combining or Incremental Redundancy（IR） combining.
作者 王彬彬 酆广增
机构地区 南京邮电大学通信与信息工程学院
出处 《电路与系统学报》 CSCD 北大核心 2011年第5期47-51,59,共6页 Journal of Circuits and Systems
关键词 多输入多输出系统 混合自动请求重传 对数似然比 球译码 MIMO HARQ LLR Sphere Decoding（SD）
分类号 TN929 [电子电信—通信与信息系统]
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参考文献9

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电路与系统学报
2011年 第5期

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