光通信研究Issue(1)：8-15,8.DOI:10.13756/j.gtxyj.2026.240177
差分调制及相干OFDMA-PON系统相位噪声补偿
Differential Modulation and Phase Noise Compensation of CO-OFDMA-PON System
摘要
Abstract
[Objective]Two enhanced differential schemes have been proposed to improve the feasibility of differential modulation in the uplink transmission scenario for multi-user coherent systems.[Methods]Leveraging the inherent capability of 16 Differen-tial Amplitude and Phase Shift Keying(DAPSK)to automatically eliminate phase difference within quasi-steady-state Orthogonal Frequency Division Multiplexing(OFDM)frames,a scheme utilizing different-order differential phase joint modulation is pro-posed.Further performance enhancements are achieved through the incorporation of a scrambler.[Results]Compared with 16DAPSK modulation,the proposed two modulation schemes bring about 2 and 3 dB sensitivity improvement to the system,re-spectively.[Conclusion]The Bit Error Rate(BER)performance of both the joint modulation scheme and the joint modulation scheme with scrambler surpasses that of the original one,thereby enhancing the data transmission reliability.关键词
正交频分复用/差分幅度相移键控/相位噪声补偿/线宽容限Key words
OFDM/DAPSK/phase noise compensation/linewidth tolerance分类
信息技术与安全科学引用本文复制引用
刘紫玥,李正璇,杨勤尧,高奇,王梁,宋英雄..差分调制及相干OFDMA-PON系统相位噪声补偿[J].光通信研究,2026,(1):8-15,8.基金项目
国家重点研发计划资助项目(2021YFB2900801) （2021YFB2900801）
上海市科委自主资助项目(22511100902,22511100502) （22511100902,22511100502）
上海市自然科学基金资助项目(20ZR1420900) （20ZR1420900）
高等学校学科创新引智计划资助项目(D20031) （D20031）
