Crosstalk Mitigation Technology in Mode Group Division Multiplexing Transmission Based on Precoding

被引：0
|
作者：
Fu H. [1 ,2 ]
Zhu Z. [1 ,2 ]
Chen J. [1 ,2 ]
机构：
[1] Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai
[2] Joint International Research Laboratory of Specialty Fiber Optics and Advanced Communication, Shanghai University, Shanghai
来源：
Guangxue Xuebao/Acta Optica Sinica | 2021年 / 41卷 / 06期
关键词：
Mode group division multiplexing; Optical communications; Precoding; Signal crosstalk; Single-end channel estimation;
D O I：
10.3788/AOS202141.0606003
中图分类号：
学科分类号：
摘要：
A precoding scheme based on single-end channel estimation is proposed to mitigate crosstalk in received signals in intensity modulation direct detection (IM-DD) mode group division multiplexing transmission system based on photonic lantern. The scheme uses a signal feedback mechanism which is made up of a circulator and a splitter. Signals in receiving ends will return to the transmitting end for single-end channel estimation and the channel transmitting matrix will be used for precoding. The experimental results show that after the precoding processing in the back-to-back and 500-m few mode fiber mode group division multiplexing transmission systems, the transmitted power of LP01LP01 and LP11aLP11b channel signals can be reduced about 3 dB and 1 dB respectively when the bit error ratio (BER) is at the threshold of 1.3×10-2 forward error correction (FEC). This paper provides an effective solution to reduce signal crosstalk in point-to-multipoint IM-DD mode group multiplexing transmission. © 2021, Chinese Lasers Press. All right reserved.
引用
收藏
相关论文
共 16 条
  • [1] Huang C, Li Y X, Meng W, Et al., Effect of mode coupling on quantum bit error rate in mode division multiplexing simultaneous transmission system, Acta Optica Sinica, 40, 4, (2020)
  • [2] Zhang Q, Guo Y B, Chen J K, Et al., A communication experiment using mode division multiplexing with phase modulation-coherent detection, Chinese Journal of Lasers, 47, 3, (2020)
  • [3] Ryf R, Randel S, Gnauck A H, Et al., Space-division multiplexing over 10 km of three-mode fiber using coherent 6×6 MIMO processing, Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, (2011)
  • [4] Xiang X, Li Y, Tu C R, Et al., Performance comparison of DA-TDE and CMA for MIMO equalization in multimode multiplexing systems, Photonic Network Communications, 32, 2, pp. 218-223, (2016)
  • [5] Khalid H A, Ullah R, Liu B, Et al., Polarization-based 6×6 MIMO transmission over 75 km few-mode multicore fiber using recursive least squares constant modulus algorithm, Optical Engineering, 58, 2, (2019)
  • [6] Chen J, Wang F, Li Z X, Et al., Reducing signal crosstalk in IM-DD-mode-division multiplexing transmission via digital orthogonal filtering, Acta Optica Sinica, 39, 8, (2019)
  • [7] Wang C Y, Wang J X, Sun Y M., Research of optimal precoding selection strategy in large scale MIMO, Video Engineering, 40, 5, pp. 40-47, (2016)
  • [8] Joham M, Utschick W, Nossek J A., Linear transmit processing in MIMO communications systems, IEEE Transactions on Signal Processing, 53, 8, pp. 2700-2712, (2005)
  • [9] Zheng X P, Liu L, Zhang S L., The study of STBC-MIMO-OFDM system performance based on ZF pre-coded, Mechanical Management and Development, 25, 4, pp. 203-204, (2010)
  • [10] Costa M., Writing on dirty paper, IEEE Transactions on Information Theory, 29, 3, pp. 439-441, (1983)
12