Chinese Optics Letters, Volume. 22, Issue 8, 080602(2024)
Demonstration of LDPC-coded PS-64QAM OFDM employing novel bit-class distribution matching in a W-band RoF system
Figures & Tables(10)
Fig. 1. Principle flowchart for two-stage bit weight distribution matching.
Fig. 2. (a) PS-PAM8 with gray mapping. (b) and (c) Probability distribution constellation example of k = 3 for first stage inversion and second stage inversion. (d) Process of LDPC-coded PS-64QAM mapping/de-mapping.
Fig. 5. Experimental setup. Insets: (a) the measured optical spectrum after the OC processing; (b) the electrical spectrum for PS-64QAM OFDM.
Fig. 7. SNR versus subcarrier index for PS-64QAM OFDM after 4 m wireless and 45 km SSMF transmission.
Table 1. Some Key Parameters Used in the Experiment
View tableView in ArticleTable 1. Some Key Parameters Used in the Experiment
Parameter Value Modulation format 64QAM FFT/IFFT size 1024 points Data-SCs 400 CP length 32 points OFDM symbols per frame 243 TS 5 Digital clipping ratio 12 dB k (PS) 3, 9 LDPC code length and rate 48,600 and 3/4
Tools
Get Citation
Copy Citation Text
Haitao Zhao, Bangning Xu, Wei Xun, Jianxin Ren, Shuaidong Chen, Long Zhang, Li Zhao, Bo Liu, "Demonstration of LDPC-coded PS-64QAM OFDM employing novel bit-class distribution matching in a W-band RoF system," Chin. Opt. Lett. 22, 080602 (2024)
Paper Information
Category: Fiber Optics and Optical Communications
Received: Jan. 17, 2024
Accepted: Apr. 16, 2024
Published Online: Aug. 22, 2024
The Author Email: Bo Liu (bo@nuist.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20