Demonstration of LDPC-coded PS-64QAM OFDM employing novel bit-class distribution matching in a W-band RoF system  

作　　者：Haitao Zhao Bangning Xu Wei Xun Jianxin Ren Shuaidong Chen Long Zhang Li Zhao Bo Liu 赵海涛;徐邦宁;荀位;任建新;陈帅东;张龙;赵利;刘博(School of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China;Institute of Optics and Electronics,Nanjing University of Information Science&Technology,Nanjing 210044,China;Key Laboratory for Information Science of Electromagnetic Waves,Fudan University,Shanghai 200433,China)

机构地区：[1]School of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China [2]Institute of Optics and Electronics,Nanjing University of Information Science&Technology,Nanjing 210044,China [3]Key Laboratory for Information Science of Electromagnetic Waves,Fudan University,Shanghai 200433,China

出　　处：《Chinese Optics Letters》2024年第8期35-40,共6页中国光学快报（英文版）

基　　金：supported by the Natural Science Research Startup Foundation of Recruiting Talents of Nanjing University of Posts and Telecommunications(No.NY223144)。

摘　　要：In this work,we proposed and experimentally demonstrated a novel probabilistic shaping(PS)64-ary quadrature amplitude modulation(QAM)orthogonal frequency division multiplexing(OFDM)with low-density parity-check(LDPC)-coded modulation in a W-band radio-over-fiber(RoF)system using envelope detection.The proposed PS scheme has the advantages of no complex multiplication and division operations and low hardware implementation complexity.In our experiments,the two-stage bit weight distribution matching-based PS-64QAM OFDM signals with a rate of 28.13 Gb/s transmission over 4 m wireless+45-km standard single-mode fiber transmission can be achieved.The system performance is investigated under one LDPC code rate(3/4)and two PS parameter values(k=3 and 9).The experimental results show that the receiver power sensitivity and the system fiber nonlinear effect tolerance can be significantly improved compared with uniformly distributed OFDM signals.

关 键 词：probabilistic shaping two-stage bit weight distribution matching orthogonal frequency division multiplexing W-BAND radio-over-fiber system 

分 类 号：TN929.53[电子电信—通信与信息系统]