Multi-level phase-amplitude hybrid modulation and its transmission performance analysis

Wenjing Fang; Chenglin Bai; Xia Zhang; Zhengxi Zhao; Weibing Sun

doi:10.1117/12.903966

14 December 2011 Multi-level phase-amplitude hybrid modulation and its transmission performance analysis

Wenjing Fang, Chenglin Bai, Xia Zhang, Zhengxi Zhao, Weibing Sun

Proceedings Volume 8309, Optical Transmission Systems, Subsystems, and Technologies IX; 83092Z (2011) https://doi.org/10.1117/12.903966
Event: SPIE/OSA/IEEE Asia Communications and Photonics, 2011, Shanghai, China

Abstract

The paper proposed a novel hybrid modulation format -16-level differential phase shift keying with binary amplitude shift keying(16DPSK-ASK), which carries 5 bits per symbol. With analyzing the characteristics of optical 16-level differential phase shift keying (16DPSK), the study analyzed 16DPSK-ASK modem methods theoretically and presented the methods in their achieving processes specifically. Based on RZ-16DPSK-ASK and CSRZ-16DPSK-ASK modulation methods, spectra and their eye diagrams following demodulator of Matlab simulation were obtained. The optimal back to back extinction ratio was derived, so that the equivalent eye opening was obtained for the amplitude tributary and phase tributary. The results showed that the 16DPSK-ASK hybrid modulation methods, as a possible new modulation format, not only have much narrower spectra with higher spectrum efficiency but also simplify the transmitter and receiver comparing with the same level modulation format. The satisfactory performance of the eye diagrams obtained after demodulation suggested that it was one of the dominant candidate modulation formats high-speed optical transmission system.

Citation Download Citation

Wenjing Fang, Chenglin Bai, Xia Zhang, Zhengxi Zhao, and Weibing Sun "Multi-level phase-amplitude hybrid modulation and its transmission performance analysis", Proc. SPIE 8309, Optical Transmission Systems, Subsystems, and Technologies IX, 83092Z (14 December 2011); https://doi.org/10.1117/12.903966

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