基于软判决下的不删余极化码参数识别
TN911.7; 针对极化码盲识别问题,首先证明了能表征实际极化码码长、码率关系的定理1和定理2及区别冻结比特位和信息比特位的定理3.基于这3个定理,通过遍历可能的码长值,构建了码字矩阵和克罗内克矩阵,然后遍历信息比特位,检测码字空间与疑似对偶空间的校验关系.为了检测校验关系,引入了对数似然比概念,基于其统计特性和最优准则,估计出该遍历码长下的码率及信息比特位置,最终完成参数的识别.仿真结果表明,3个定理的结论与仿真结果一致,且算法具有较强的容错性,在信噪比为6.5 dB、码长为1024条件下,参数识别率能够达到98％以上....
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| Published in | 通信学报 Vol. 41; no. 12; pp. 60 - 71 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
海军航空大学航空作战勤务学院,山东烟台264001%海军航空大学航空基础学院,山东烟台264001%海军航空大学岸防兵学院,山东烟台264001
25.12.2020
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1000-436X |
| DOI | 10.11959/j.issn.1000-436x.2020254 |
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| Abstract | TN911.7; 针对极化码盲识别问题,首先证明了能表征实际极化码码长、码率关系的定理1和定理2及区别冻结比特位和信息比特位的定理3.基于这3个定理,通过遍历可能的码长值,构建了码字矩阵和克罗内克矩阵,然后遍历信息比特位,检测码字空间与疑似对偶空间的校验关系.为了检测校验关系,引入了对数似然比概念,基于其统计特性和最优准则,估计出该遍历码长下的码率及信息比特位置,最终完成参数的识别.仿真结果表明,3个定理的结论与仿真结果一致,且算法具有较强的容错性,在信噪比为6.5 dB、码长为1024条件下,参数识别率能够达到98％以上. |
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| AbstractList | TN911.7; 针对极化码盲识别问题,首先证明了能表征实际极化码码长、码率关系的定理1和定理2及区别冻结比特位和信息比特位的定理3.基于这3个定理,通过遍历可能的码长值,构建了码字矩阵和克罗内克矩阵,然后遍历信息比特位,检测码字空间与疑似对偶空间的校验关系.为了检测校验关系,引入了对数似然比概念,基于其统计特性和最优准则,估计出该遍历码长下的码率及信息比特位置,最终完成参数的识别.仿真结果表明,3个定理的结论与仿真结果一致,且算法具有较强的容错性,在信噪比为6.5 dB、码长为1024条件下,参数识别率能够达到98％以上. |
| Author | 张立民 吴昭军 钟兆根 但波 |
| AuthorAffiliation | 海军航空大学航空作战勤务学院,山东烟台264001%海军航空大学航空基础学院,山东烟台264001%海军航空大学岸防兵学院,山东烟台264001 |
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| Author_FL | ZHONG Zhaogen ZHANG Limin WU Zhaojun DAN Bo |
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| Keywords | 码长 软判决 极化码 冻结比特位 识别 信息比特位 |
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| Title | 基于软判决下的不删余极化码参数识别 |
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