Numerical Study of APSK Format for Long-Haul Transmission and Its Performance Improvement by Zero-Nulling Method

Hidenori TAGA; Jyun-Yi WU; Wei-Tong SHIH; Seng-Sheng SHU

doi:10.1093/ietcom/e91-b.7.2165

Joint Special Section on Opto-electronics and Communications toward NGN and beyond

Numerical Study of APSK Format for Long-Haul Transmission and Its Performance Improvement by Zero-Nulling Method

Hidenori TAGA, Jyun-Yi WU, Wei-Tong SHIH, Seng-Sheng SHU

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Keywords: optical fiber communication, amplitude shift keying, phase shift keying, numerical simulation

JOURNAL RESTRICTED ACCESS

2008 Volume E91.B Issue 7 Pages 2165-2168

DOI https://doi.org/10.1093/ietcom/e91-b.7.2165

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Abstract

Transmission performance of amplitude and phase shift keying (APSK) format is studied theoretically. The extinction ratio of the amplitude shift keying (ASK) signal of the APSK format causes a trade-off of the performance between the ASK and the phase shift keying (PSK) signal of the APSK format. Then, zero-nulling method is proposed to improve the performance of the APSK format, and its effectiveness is confirmed by the numerical simulation.

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