Performance analysis of spectrally shaped DDO-OFDM based on nonlinear differential coding and real-valued precoding

被引:1
作者
Ma, Jie [1 ,2 ,3 ]
Song, Ruoling [1 ,2 ,3 ]
Lu, Jia [1 ,2 ,3 ]
Liu, Jianfei [1 ,2 ,3 ]
Liu, Tianyi [1 ,2 ,3 ]
Luo, Mingming [1 ,2 ,3 ]
机构
[1] Hebei Univ Technol, Sch Elect & Informat Engn, Tianjin 300401, Peoples R China
[2] Univ Technol, China Tianjin Key Lab Elect Mat & Devices, Tianjin 300401, Peoples R China
[3] Hebei Prov Key Lab Adv Laser Technol & Equipment, Tianjin 300401, Peoples R China
关键词
DDO-OFDM; Nonlinear differential coding; Spectral shaping; Real-valued precoding;
D O I
10.1016/j.optcom.2023.129597
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
This paper presents a cost-effective spectrally shaped quadrature amplitude modulation (SS-QAM) signal in bandwidth limited direct detection optical orthogonal frequency division multiplexing (DDO-OFDM) systems. The concatenation of the nonlinear differential coding (NLDC) and real-valued precoding sequentially implements spectral-shaping and multi-carrier modulation. Real-value discrete cosine transform (DCT) and discrete Hartley transform (DHT) are used to realize the uniform distribution of the fluctuation signal-to-noise ratio (SNR) and reduce the peak-to-average power ratio (PAPR). To broaden the flexibility of constellation mapping and improve the fine granularity of signals, six modulation formats are analyzed and evaluated in DDO-OFDM systems. Results show that SS-QAM is superior to uniformly distributed QAM in terms of reducing bit error rate (BER) and increasing normalized generalized mutual information (NGMI). Compared to the uniform 25/36/49/64/81/100 QAM OFDM signal, when the transmission distance is 20 km, SS-25/36/49 QAM signal can achieve error free transmission and SS-64/81/100 QAM can achieve 0.9971/1.0037/1.0255 Q-factor improvement and 0.0009/0.0014/0.0015 NGMI gain. When the transmission distance is 50 km, SS -25/36/49/64/81/100 QAM can achieve 0.4182/0.5169/0.9311/0.9988/1.0216/1.1487 Q-factor improvement and 0.0004/0.0008/0.0031/0.0043/0.0066/0.0083 NGMI gain. When the transmission distance is 80 km, SS -25/36/49/64/81/100 QAM can achieve 0.4754/0.7486/1.181/1.2012/1.2302/1.3904 Q-factor improvement and 0.0015/0.0046/0.0108/0.0152/0.0172/0.0205 NGMI gain. In addition, the Q-factor and NGMI gain increases as the fiber length increases, which verifies that the presented scheme is robust to the nonlinear effect.
引用
收藏
页数:7
相关论文
共 23 条
[1]   PAPR Reduction of OFDM Signal Through DFT Precoding and GMSK Pulse Shaping in Indoor VLC [J].
Ahmad, Rizwana ;
Srivastava, Anand .
IEEE ACCESS, 2020, 8 :122092-122103
[2]   Comparison of Different Precoding Techniques for Unbalanced Impairments Compensation in Short-Reach DMT Transmission Systems [J].
Chen, Ming ;
Wang, Ling ;
Xi, Dongsheng ;
Zhang, Long ;
Zhou, Hui ;
Chen, Qinghui .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (22) :6202-6213
[3]   High Spectral Efficiency WDM Transmission Based on Hybrid Probabilistically and Geometrically Shaped 256QAM [J].
Ding, Junjie ;
Sang, Bohan ;
Wang, Yanyi ;
Kong, Miao ;
Wang, Feng ;
Zhu, Bowen ;
Zhao, Li ;
Zhou, Wen ;
Yu, Jianjun .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2021, 39 (17) :5494-5501
[4]   Comparison of Geometrically Shaped 32-QAM and Probabilistically Shaped 32-QAM in a Bandwidth-Limited IM-DD System [J].
Ding, Junjie ;
Zhang, Jiao ;
Wei, Yiran ;
Zhao, Feng ;
Li, Chaoyang ;
Yu, Jianjun .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (16) :4352-4358
[5]   Analysis of Nonlinear Fiber Interactions for Finite-Length Constant-Composition Sequences [J].
Fehenberger, Tobias ;
Millar, David S. ;
Koike-Akino, Toshiaki ;
Kojima, Keisuke ;
Parsons, Kieran ;
Griesser, Helmut .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2020, 38 (02) :457-465
[6]  
Feng Z., 2016, 2016 OPTICAL FIBER C, P1
[7]   Multi-Dimensional Distribution Matching With Bit-Level Shaping for Probabilistically Shaped High Order Modulation Formats [J].
Fu, Mengfan ;
Liu, Qiaoya ;
Xu, Yicheng ;
Jiang, Hexun ;
Zeng, Xiaobo ;
Wu, Yiwen ;
Yi, Lilin ;
Hu, Weisheng ;
Zhuge, Qunbi .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2022, 40 (09) :2870-2879
[8]   Subcarrier Grouping-Enabled Improvement in Transmission Performance of Subcarrier Index-Power Modulated Optical OFDM for IM/DD PON Systems [J].
Halabi, Fadi ;
Chen, Lin ;
Giddings, Roger Philip ;
Hamie, Ali ;
Tang, Jianming .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2018, 36 (20) :4792-4798
[9]   Experimental demonstration of flexible information rate PON beyond 100 Gb/s with probabilistic and geometric shaping [J].
Kaneda, Noriaki ;
Zhang, Rui ;
Lefevre, Yannick ;
Mahadevan, Amitkumar ;
van Veen, Doutje ;
Houtsma, Vincent .
JOURNAL OF OPTICAL COMMUNICATIONS AND NETWORKING, 2022, 14 (01) :A23-A30
[10]   Adaptively Biased OFDM for IM/DD-Aided Optical Wireless Communication Systems [J].
Li, Baolong ;
Xu, Wei ;
Li, Zhengquan ;
Zhou, Ying .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2020, 9 (05) :698-701