CN102891825B - 高阶qam系统载波恢复方法及装置 - Google Patents
高阶qam系统载波恢复方法及装置 Download PDFInfo
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- CN102891825B CN102891825B CN201210378198.8A CN201210378198A CN102891825B CN 102891825 B CN102891825 B CN 102891825B CN 201210378198 A CN201210378198 A CN 201210378198A CN 102891825 B CN102891825 B CN 102891825B
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 49
- 238000001914 filtration Methods 0.000 claims description 48
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- YTAHJIFKAKIKAV-XNMGPUDCSA-N [(1R)-3-morpholin-4-yl-1-phenylpropyl] N-[(3S)-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl]carbamate Chemical compound O=C1[C@H](N=C(C2=C(N1)C=CC=C2)C1=CC=CC=C1)NC(O[C@H](CCN1CCOCC1)C1=CC=CC=C1)=O YTAHJIFKAKIKAV-XNMGPUDCSA-N 0.000 claims description 3
- 230000001186 cumulative effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 description 4
- 238000012935 Averaging Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
调制阶数 | 功率阈值 |
32QAM | 31 |
64QAM | 66 |
128QAM | 154 |
256QAM | 322 |
512QAM | 682 |
1024QAM | 1530 |
调制阶数 | 功率阈值 |
32QAM | 31 |
64QAM | 66 |
128QAM | 154 |
256QAM | 322 |
512QAM | 682 |
1024QAM | 1530 |
Claims (4)
Priority Applications (1)
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CN201210378198.8A CN102891825B (zh) | 2012-10-08 | 2012-10-08 | 高阶qam系统载波恢复方法及装置 |
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CN201210378198.8A CN102891825B (zh) | 2012-10-08 | 2012-10-08 | 高阶qam系统载波恢复方法及装置 |
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CN102891825A CN102891825A (zh) | 2013-01-23 |
CN102891825B true CN102891825B (zh) | 2015-02-04 |
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CN201210378198.8A Active CN102891825B (zh) | 2012-10-08 | 2012-10-08 | 高阶qam系统载波恢复方法及装置 |
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Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103368896B (zh) * | 2013-06-21 | 2016-09-07 | 山东泉清通信有限责任公司 | 一种高阶调制解调中载波恢复的方法 |
CN103391269B (zh) * | 2013-08-02 | 2016-04-27 | 深圳市统先科技股份有限公司 | 8qam接收机及其提取本地载波相位误差的方法 |
CN108270715B (zh) * | 2017-12-21 | 2020-09-15 | 西安电子科技大学 | 适合高阶4096-qam的载波恢复系统和方法 |
CN108683620B (zh) * | 2018-03-19 | 2021-08-17 | 西安电子科技大学 | 一种适合高阶调制方式的抗相位噪声盲载波恢复方法 |
CN109361480B (zh) * | 2018-09-28 | 2021-03-05 | 西南电子技术研究所(中国电子科技集团公司第十研究所) | 自动化扩频捕获性能测试电路 |
CN109995431B (zh) * | 2019-04-10 | 2020-10-23 | 大连大学 | 一种快速计算egn模型中高阶噪声系数的方法 |
CN112929310A (zh) * | 2021-01-25 | 2021-06-08 | 天津理工大学 | 一种基于高阶qam的载波恢复方法 |
CN116319211B (zh) * | 2023-05-12 | 2023-08-11 | 长沙先度科技有限公司 | 一种用于qam信号的多阶卡尔曼载波跟踪方法、跟踪环路及信号接收机 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1649339A (zh) * | 2005-01-26 | 2005-08-03 | 清华大学 | π/2相移的非正方形M-QAM调制解调方法及其系统 |
CN101710884A (zh) * | 2009-12-04 | 2010-05-19 | 深圳国微技术有限公司 | 基于信道估计和均衡的qam模式识别的方法 |
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JP2007195075A (ja) * | 2006-01-20 | 2007-08-02 | Fujitsu Ltd | 復調回路および復調方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN1649339A (zh) * | 2005-01-26 | 2005-08-03 | 清华大学 | π/2相移的非正方形M-QAM调制解调方法及其系统 |
CN101710884A (zh) * | 2009-12-04 | 2010-05-19 | 深圳国微技术有限公司 | 基于信道估计和均衡的qam模式识别的方法 |
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Effective date of registration: 20180105 Address after: 230088 No. 2, Tianyuan Road, hi tech Zone, Anhui, Hefei Co-patentee after: HEFEI FIRST COMMUNICATION TECHNOLOGY CO., LTD. Patentee after: Anhui Feite Technology Co.,Ltd. Address before: 230088 No. 2, Tianyuan Road, hi tech Zone, Anhui, Hefei Patentee before: Anhui Feite Technology Co.,Ltd. |
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Application publication date: 20130123 Assignee: SHENZHEN ANKE HIGH-TECH Co.,Ltd. Assignor: HEFEI FEITE COMMUNICATION TECHNOLOGY Co.,Ltd. Contract record no.: X2022980004488 Denomination of invention: Carrier recovery method and device of high-order QAM system Granted publication date: 20150204 License type: Common License Record date: 20220420 |
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