| New Carrier Recovery Method for 16-QAM System Based on Full Constellation Points |
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| 作者姓名： | 王平 范平志 |
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| 作者单位： | School of Information Science and Technology Southwest Jiaotong University，School of Information Science and Technology，Southwest Jiaotong University，Chengdu 610031，China，Chengdu 610031，China |
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| 基金项目： | Foundation item The National Natural Foundation of China （ No. 60472089 ） |
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| 摘 要： | The relationship between the data to be transmitted and the signal phase in the 16-level quadrature amplitude modulation (16-QAM) constellation is derived. Then a new carrier recovery method based on this relationship is proposed, where both the diagonal and non-diagonal signal points are used for carrier recovery. The analysis and simulation results show that, the proposed method for 16-QAM has a higher acquisition speed than the times-four carrier recovery method, and has a wider acquisition bandwidth and smaller phase errors than the diagonal constellation based carrier recovery method.
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| 关 键 词： | M-QAM 载体恢复 同步化 信号发射 |
| 文章编号： | 1005-2429（2007）03-0187-05 |
| 修稿时间： | 2006-11-09 |
New Carrier Recovery Method for 16-QAM System Based on Full Constellation Points |
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| WANG Ping,FAN Ping-zhi.New Carrier Recovery Method for 16-QAM System Based on Full Constellation Points[J].Journal of Southwest Jiaotong University,2007,15(3):187-191. |
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| Authors: | WANG Ping FAN Ping-zhi |
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| Institution: | School of Information Science and Technology, Southwest Jiaotong University, Chengdu 610031, China |
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| Abstract: | The relationship between the data to be transmitted and the signal phase in the 16-level quadrature amplitude modulation (16-QAM) constellation is derived. Then a new carrier recovery method based on this relationship is proposed, where both the diagonal and non-diagonal signal points are used for carrier recovery. The analysis and simulation results show that, the proposed method for 16-QAM has a higher acquisition speed than the times-four carrier recovery method, and has a wider acquisition bandwidth and smaller phase errors than the diagonal constellation based carrier recovery method. |
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| Keywords: | M-QAM Carrier recovery Synchronization |
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