TY - JOUR
T1 - Theoretical analysis of PAM-N and M-QAM BER computation with single-sideband signal
AU - Lu, Dongxu
AU - Zhou, Xian
AU - Yang, Yuqiang
AU - Huo, Jiahao
AU - Yuan, Jinhui
AU - Long, Keping
AU - Yu, Changyuan
AU - Lau, Alan Pak Tao
AU - Lu, Chao
N1 - Funding Information:
This work was supported by National Key Research and Development Program of China (Grant No. 2019YFB1803905), National Natural Science Foundation of China (Grant Nos. 61871030, 61671053), Fundamental Research Funds for the Central Universities (Grant No. FRF-MP-19-009), State Key Laboratory of Advanced Optical Communication Systems Networks, China, Open Fund of IPOC (BUPT) (Grant No. IPOC2018B009), and Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services.
Publisher Copyright:
© 2021, Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2021/6
Y1 - 2021/6
N2 - In this paper, the theoretical bit error rate (BER) of N-level pulse amplitude modulation (PAM-N) and M-ary quadrature amplitude modulation (M-QAM) have been studied and compared under different scenarios, including (i) PAM with intensity modulation with direct detection (IM/DD) and field modulation with detection (FMD) (including coherent detection and single-sideband modulation with direct detection (SSB-DD)), and (ii) QAM with coherent detection and SSB-DD. Considering the relationship between the symbol spacing and signal-to-noise ratio (SNR), we provide the mathematical BER equations, including the optical signal-to-noise ratio (OSNR) and carrier-to-signal power ratio (CSPR), especially for PAM signals. To verify the validity of our theoretical expressions for SSB systems, transmissions with 224-Gb/s SSB-PAM4/16QAM signals using the Kramers-Kronig (KK) receiver were implemented on a unified optical system platform. The simulation results agreed well with theoretical calculations both in back-to-back (BtB) and 120-km transmission scenarios, which showed that the BER evaluation methods can serve as a theoretical guidance and system assessment criteria for SSB scenarios.
AB - In this paper, the theoretical bit error rate (BER) of N-level pulse amplitude modulation (PAM-N) and M-ary quadrature amplitude modulation (M-QAM) have been studied and compared under different scenarios, including (i) PAM with intensity modulation with direct detection (IM/DD) and field modulation with detection (FMD) (including coherent detection and single-sideband modulation with direct detection (SSB-DD)), and (ii) QAM with coherent detection and SSB-DD. Considering the relationship between the symbol spacing and signal-to-noise ratio (SNR), we provide the mathematical BER equations, including the optical signal-to-noise ratio (OSNR) and carrier-to-signal power ratio (CSPR), especially for PAM signals. To verify the validity of our theoretical expressions for SSB systems, transmissions with 224-Gb/s SSB-PAM4/16QAM signals using the Kramers-Kronig (KK) receiver were implemented on a unified optical system platform. The simulation results agreed well with theoretical calculations both in back-to-back (BtB) and 120-km transmission scenarios, which showed that the BER evaluation methods can serve as a theoretical guidance and system assessment criteria for SSB scenarios.
KW - BER computation
KW - Kramers-Kronig receiver
KW - M-ary quadrature amplitude modulation (M-QAM)
KW - N-level pulse amplitude modulation (PAM-N)
KW - single-sideband (SSB)
UR - http://www.scopus.com/inward/record.url?scp=85108242810&partnerID=8YFLogxK
U2 - 10.1007/s11432-020-3025-4
DO - 10.1007/s11432-020-3025-4
M3 - Journal article
AN - SCOPUS:85108242810
SN - 1674-733X
VL - 64
JO - Science China Information Sciences
JF - Science China Information Sciences
IS - 8
M1 - 182312
ER -