光通信技术2024，Vol.48Issue(6)：75-81,7.DOI:10.13921/j.cnki.issn1002-5561.2024.06.014
网格编码调制星座整形相位共轭孪生波方案
Trellis coding modulation constellation shaping phase conjugate twin wave scheme
摘要
Abstract
In order to further improve the performance of orthogonal frequency division multiplexing(OFDM)in dense wave-length division multiplexing(DWDM)fiber optic communication systems,a multi-dimensional trellis coding modulation(TCM)constellation shaping phase conjugate twin waves(PCTW)scheme based on hexadecimal amplitude phase shift keying(16AP-SK)is proposed,and a multi-dimensional Huffman probability shaping(PS)method based on OFDM subcarriers is designed.By using Matlab and OptiSystem to build a simulation platform,the system performance before and after implementing constellation shaping is compared and analyzed.The simulation experiment results show that compared with the system without any constella-tion shaping technology,the introduction of multidimensional Huffman PS and geometric shaping strategy reduces the spectral ef-ficiency of the system by 0.04,but significantly reduces the symbol error rate by 10.7 dB.关键词
密集波分复用/振幅移相键控/网格编码调制/相位共轭孪生波/概率整形Key words
dense wavelength division multiplexing/amplitude phase shift keying/trellis coding modulation/phase conjugated twin waves/probability shaping分类
信息技术与安全科学引用本文复制引用
张钰,杜建新,辛雅洁,王陈..网格编码调制星座整形相位共轭孪生波方案[J].光通信技术,2024,48(6):75-81,7.基金项目
江苏省高校自然科学研究面上项目(16KJB510033)资助. （16KJB510033）
