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大线宽相干光正交频分复用系统中盲相位噪声补偿

Blind Phase Noise Compensation in Large Linewidth Coherent Optical Orthogonal Frequency Division Multiplexing Systems

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摘要

基于大线宽相干光正交频分复用(CO-OFDM)系统, 提出了一种可以有效克服符号判决错误的盲载波间干扰(ICI)相位噪声补偿算法。使用该算法之前, 先使用无迭代盲(IFB)算法对公共相位误差(CPE)的相位噪声进行补偿。该算法采用了形式简单的代价函数, 可大幅减小计算复杂度。该ICI相位噪声补偿算法包括粗略ICI和精细ICI相位噪声补偿两个阶段, 先使用平均能量盲(Avg-BL)算法进行粗略ICI相位噪声补偿, 再使用公共相位误差分割补偿(CPEC)算法进行精细ICI相位噪声补偿。该CPEC算法对粗略ICI相位噪声补偿后的频域数据进行判决, 再将每个接收到的正交频分多路复用(OFDM)时域符号分割为一定数目的亚符号, 从而求出每个亚符号中相位噪声的近似平均值。Avg-BL算法有效解决了CPEC算法中的符号判决错误传播问题;CPEC算法在时域OFDM亚符号分割数目较大的情况下, 对ICI相位噪声具有较好的补偿效果。对50 Gbit/s CO-OFDM系统在传输距离为100 km的情况进行了仿真, 仿真结果表明, 与Avg-BL算法和CPEC算法等ICI相位噪声算法相比, 所提算法具有较好的相位噪声补偿效果, 且具有较高的频谱利用率。在该算法中, 选择合适的时域OFDM亚符号分割数目, 可取得较好的补偿效果, 且算法复杂度并未显著增加。

Abstract

A blind inter-carrier interference (ICI) phase noise compensation algorithm, which can solve the problem of symbol decision error effectively, is proposed based on the large linewidth coherent optical orthogonal frequency division multiplexing (CO-OFDM) system. Before using the proposed algorithm, we use the non-iterative blind (IFB) algorithm to compensate phase noise of common phase error (CPE). The proposed algorithm uses the cost function which is with simple form, so the computational complexity reduces significantly. The ICI phase noise compensation algorithm includes coarse ICI phase noise compensation and fine ICI phase noise compensation. Firstly, the average-power blind (Avg-BL) algorithm is implemented in the coarse ICI phase noise compensation, and then the common phase error compensation (CPEC) algorithm is implemented in the fine ICI phase noise compensation. A decision process will be performed by CPEC algorithm for the frequency-domain signals after the coarse ICI phase noise compensation. Every received OFDM symbol is separated into several sub-symbols in time-domain, and the approximate average value of phase noise of every sub-symbol is calculated. The sign decision error propagation problem in CPEC algorithm is solved when we use the Avg-BL algorithm. When the number of sub-symbols separated from OFDM symbol in time-domain is large, the CPEC algorithm can achieve the desired compensation performance for ICI phase noise. For the 50 Gbit/s CO-OFDM system with 100 km transmission distance, the numerical simulation is performed. The simulation results show that, compared with the other phase noise compensation algorithms, such as the Avg-BL algorithm and the CPEC algorithm, the proposed algorithm has good phase noise compensation performance with high spectral efficiency. With the suitable number of OFDM sub-symbols in time-domain, the proposed algorithm can obtain better compensation performance, and its complexity does not increase significantly.

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中图分类号:TN913.7

DOI:10.3788/aos201737.0106005

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金(60907032,61275124)、浙江省自然科学基金(LY16F050009)、上海交通大学区域光纤通信网与新型光通信系统国家重点实验室开放基金(2016GZKF0JT004)

收稿日期:2016-07-11

修改稿日期:2016-08-31

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作者单位    点击查看

任宏亮:浙江工业大学信息工程学院光纤通信与信息工程研究所, 浙江 杭州 310023
康少源:浙江工业大学信息工程学院光纤通信与信息工程研究所, 浙江 杭州 310023
卢瑾:浙江工业大学信息工程学院光纤通信与信息工程研究所, 浙江 杭州 310023
郭淑琴:浙江工业大学信息工程学院光纤通信与信息工程研究所, 浙江 杭州 310023
覃亚丽:浙江工业大学信息工程学院光纤通信与信息工程研究所, 浙江 杭州 310023
胡卫生:上海交通大学区域光纤通信网与新型光通信系统国家重点实验室, 上海 200240

联系人作者:任宏亮(hlren@zjut.edu.cn)

备注:任宏亮(1978—), 男, 博士, 副教授, 硕士生导师, 主要从事信号处理、光纤通信与传感等方面的研究。

【1】Armstrong J. OFDM for optical communications[J]. Journal of Lightwave Technology, 2009, 27(3): 189-204.

【2】Shieh W, Athaudage C. Coherent optical orthogonal frequency division multiplexing[J]. Electronics Letters, 2006, 42(10): 587-589.

【3】Yang Qi, Yu Shaohua. Tb/s ultra long haul transmission of coherent optical OFDM[J]. Chinese Science Bulletin, 2014, 59(16): 1497-1507.
杨 奇, 余少华. 兆兆比特每秒(Tb/s)级相干光OFDM超长距离传输[J]. 科学通报, 2014, 59(16): 1497-1507.

【4】Deng Mingliang, Yi Xingwen, Yu Zhenming, et al. Improving the fiber nonlinear tolerance based on constant envelope modulation for CO-OFDM systems[J]. Journal of Optoelectronics·Laser, 2013, 24(10): 1922-1929.
邓明亮, 易兴文, 于振明, 等. 通过恒包络调制提高相干光OFDM系统的光纤非线性容限[J]. 光电子·激光, 2013, 24(10): 1922-1929.

【5】Zhang Shuai, Bai Chenglin, Luo Qinglong, et al. Optimization of channel estimation for coherent optical OFDM systems with MMSE method[J]. Journal of Optoelectronics·Laser, 2013, 24(3): 508-513.
张 帅, 白成林, 罗清龙, 等. 相干光OFDM系统中MMSE信道估计研究[J]. 光电子·激光, 2013, 24(3): 508-513.

【6】Tong Zhengrong, Guo Zunli, Cao Ye, et al. Wavelet packet transform for PAPR reduction performance in CO-OFDM system[J]. Acta Photonica Sinica, 2015, 44(12): 1206001.
童峥嵘, 郭尊礼, 曹 晔, 等. 小波包变换对CO-OFDM系统高峰均比的抑制性能研究[J]. 光子学报, 2015, 44(12): 1206001.

【7】Li Bao, Yu Jianjun, He Jing, et al. Estimation and compensation of sampling clock frequency offset in coherent optical OFDM systems with a pilot-aided method[J]. Acta Photonica Sinica, 2015, 44(1): 0106003.
李 宝, 余建军, 何 晶, 等. 相干光OFDM系统中基于导频辅助的采样时钟频率偏差估计和补偿算法[J]. 光子学报, 2015, 44(1): 0106003.

【8】Yi X, Shieh W, Tang Y. Phase estimation for coherent optical OFDM[J]. IEEE Photonics Technology Letters, 2007, 19(12): 919-921.

【9】Zhou X, Yang X L, Li R, et al. Efficient joint carrier frequency offset and phase noise compensation scheme for high-speed coherent optical OFDM systems[J]. Journal of Lightwave Technology, 2013, 31(11): 1755-1761.

【10】Liu Wu, Yang Qi. Carrier phase recovery without pilot sub-carrier in coherent optical OFDM transmission systems[J]. Acta Photonica Sinica, 2011, 40(12): 1893-1898.
刘 武, 杨 奇. 相干光正交频分复用传输系统中的无导频相位纠偏方法[J]. 光子学报, 2011, 40(12): 1893-1898.

【11】Zhao Bo, Li Li, Han Li, et al. Phase noise compensation method based on RORC for CO-OFDM systems[J]. Journal of Optoelectronics·Laser, 2016, 27(1): 31-37.
赵 博, 李 莉, 韩 力, 等. 基于ROPC的CO-OFDM系统相位噪声补偿方法研究[J]. 光电子·激光, 2016, 27(1): 31-37.

【12】Liu Jianfei, Shi Huimin, Zeng Xiangye, et al. Channel estimation method based on wavelet and improved ISFA for CO-OFDM systems[J]. Chinese J Lasers, 2015, 42(2): 0205005.
刘剑飞, 石慧敏, 曾祥烨, 等. 基于小波降噪和改进ISFA的CO-OFDM信道估计方法[J]. 中国激光, 2015, 42(2): 0205005.

【13】Su Zhenzhen, Xu Yi, Dong Ying, et al. Channel estimation based on analysis of phase noise compensation for CO-OFDM system[J]. Journal of Optoelectronics·Laser, 2013, 24(11): 2135-2141.
苏真真, 许 义, 董 颖, 等. 基于相位噪声分析补偿的CO-OFDM系统信道估计研究[J]. 光电子·激光, 2013, 24(11): 2135-2141.

【14】Le S T, Kanese T, Giacoumidis E, et al. Quasi-pilot aided phase noise estimation for coherent optical systems[J]. IEEE Photonics Technology Letters, 2014, 26(5): 504-507.

【15】Mousa-Pasandi M E, Plant D V. Zero-overhead phase noise compensation via decision-directed phase equalizer for coherent optical OFDM[J]. Optics Express, 2010, 18(20): 20651-20660.

【16】Cao S J, Kam P Y, Yu C Y. Decision-aided, pilot-aided, decision-feedback phase estimation for coherent optical OFDM[J]. IEEE Photonics Technology Letters, 2012, 24(22): 2067-2069.

【17】Ha Y S, Chung W. Non-data-aided phase noise suppression scheme for CO-OFDM systems[J]. IEEE Photonics Technology Letters, 2013, 25(17): 1703-1705.

【18】Zhao C X, Yang C C, Yang F, et al. A CO-OFDM system with almost blind phase noise suppression[J]. IEEE Photonics Technology Letters, 2013, 25(17): 1723-1726.

【19】Mousa-Pasandi M E, Plant D V. Noniterative interpolation-based partial phase noise ICI mitigation for CO-OFDM transport systems[J]. IEEE Photonics Technology Letters, 2011, 23(21): 1594-1596.

【20】Chung W. A matched filtering approach for phase noise suppression in CO-OFDM system[J]. IEEE Photonics Technology Letters, 2011, 22(24): 1802-1804.

【21】Lee M K, Lim S C, Yang K. Blind compensation for phase noise in OFDM systems over constant modulus modulation[J]. IEEE Transactions on Communications, 2012, 60(3): 620-625.

【22】Cao S J, Kam P Y, Yu C Y. Time-domain blind ICI mitigation for non-constant modulus format in CO-OFDM[J]. IEEE Photonics Technology Letters, 2013, 25(24): 2490-2493.

【23】Ren H L, Cai J X, Ye X, et al. Decision-aided ICI mitigation with time-domain average approximation in CO-OFDM[J]. Optics Communications, 2015, 347: 1-7.

【24】Liu Y, Yang C C, Li H B. Cost-effective and spectrum-efficient coherent TDM-OFDM-PON aided by blind ICI suppression[J]. IEEE Photonics Technology Letters, 2015, 27(8): 887-890.

【25】Hong X Z, Hong X J, He S L. Linearly interpolated sub-symbol optical phase noise suppression in CO-OFDM system[J]. Optics Express, 2015, 23(4): 4691-4702.

【26】Ren H L, Cai J X, Lu J, et al. Novel iteration-free blind phase noise estimation for coherent optical OFDM[J]. Chinese Optics Letters, 2014, 12(12): 120603.

引用该论文

Ren Hongliang,Kang Shaoyuan,Lu Jin,Guo Shuqin,Qin Yali,Hu Weisheng. Blind Phase Noise Compensation in Large Linewidth Coherent Optical Orthogonal Frequency Division Multiplexing Systems[J]. Acta Optica Sinica, 2017, 37(1): 0106005

任宏亮,康少源,卢瑾,郭淑琴,覃亚丽,胡卫生. 大线宽相干光正交频分复用系统中盲相位噪声补偿[J]. 光学学报, 2017, 37(1): 0106005

被引情况

【1】唐英杰,董月军,任宏亮,卢 瑾,覃亚丽,郭淑琴,胡卫生. 基于时频域卡尔曼滤波的CO-OFDM系统相位噪声补偿算法. 光学学报, 2017, 37(9): 906002--1

【2】董月军,唐英杰,任宏亮,卢 瑾,覃亚丽,郭淑琴,胡卫生. 基于无迹卡尔曼滤波的CO-OFDM系统相位噪声补偿算法. 中国激光, 2017, 44(11): 1106010--1

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