| CO-OFDM系统中融合迫零与自消除算法的新颖相位噪声补偿算法 |
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| 引用本文： | 袁建国,南蜀崇,刘书涵,范福卓,袁梦,辛雪琪.CO-OFDM系统中融合迫零与自消除算法的新颖相位噪声补偿算法[J].半导体光电,2019,40(2):285-290. |
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| 作者姓名： | 袁建国 南蜀崇 刘书涵 范福卓 袁梦 辛雪琪 |
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| 作者单位： | 重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065;重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065;重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065;重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065;重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065;重庆邮电大学光电信息感测与传输技术重庆市重点实验室,重庆,400065 |
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| 基金项目： | 国家自然科学基金项目(61471075)；重庆市基础与前沿研究计划项目(csts2017jcyjAX0427)；2018年重庆邮电大学大学生科研训练计划项目(A2018-66). |
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| 摘 要： | 针对激光器的相位噪声会严重影响相干光正交频分复用(CO-OFDM)系统的性能问题,提出了一种将迫零算法与自消除算法相结合的新颖相位噪声补偿算法。该算法利用导频信息,通过迫零算法将每个OFDM符号的相位噪声补偿到较小的范围内,再通过自消除算法进一步补偿相位噪声。仿真结果表明,与迫零算法相比,该补偿算法不但能有效补偿相位噪声,也能补偿部分加性高斯白噪声,改善系统的误码性能,降低系统对激光器线宽的要求。
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| 关 键 词： | 相位噪声 迫零算法 自消除算法 相干光正交频分复用 |
| 收稿时间： | 2018/11/8 0:00:00 |
A Novel Phase Noise Compensation Algorithm Based on Zero-forcing and Self-cancellation Algorithms in CO-OFDM Systems |
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| YUAN Jianguo,NAN Shuchong,LIU Shuhan,FAN Fuzhuo,YUAN Meng and XIN Xueqi.A Novel Phase Noise Compensation Algorithm Based on Zero-forcing and Self-cancellation Algorithms in CO-OFDM Systems[J].Semiconductor Optoelectronics,2019,40(2):285-290. |
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| Authors: | YUAN Jianguo NAN Shuchong LIU Shuhan FAN Fuzhuo YUAN Meng and XIN Xueqi |
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| Affiliation: | Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN,Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN,Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN,Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN,Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN and Chongqing Key Lab. of Photoelectronic Information Sensing and Transmitting Technol., Chongqing University of Posts and Telecommun., Chongqing 400065, CHN |
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| Abstract: | Phase noise of the laser will seriously affect the performance of coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems, thus a novel phase noise compensation algorithm is proposed based on zero forcing algorithm and self-cancellation algorithm. First, it applies the pilot information to compensate the phase noise of each OFDM symbol to a small extent by using the zero-forcing algorithm, and then the phase noise is further compensated with the self-cancellation algorithm. Simulation results show that the proposed algorithm, compared with the zero-forcing algorithm, can not only effectively compensate the phase noise, but also partly compensate the additive white gaussian noise. It improves the bit error rate(BER) performance of the system and meanwhile reduces its requirement for laser linewidth. |
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| Keywords: | phase noise zero-forcing algorithm self-cancellation algorithm CO-OFDM |
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