Title :
Enhanced Tolerance to Phase Distortion Due to Setting Errors in a DxPSK Modulator by Using Data-Aided Phase Noise Estimation Algorithm
Author :
Takushima, Yuichi ; Choi, Hyeon Yeong ; Chung, Yun C.
Author_Institution :
Dept. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
The bit-error-rate performance of a multilevel phase-shift-keying (PSK) signal can be easily degraded by a slight phase distortion induced by the setting errors of the modulator such as the offsets of bias voltages. To solve this problem, we examine the possibility of using the data-aided phase noise estimation (DAPNE) algorithm, which has been originally proposed for the reduction of differential phase noise. The experimental results show that DAPNE can enhance the tolerance to the setting errors of differential quadrature PSK and 8-ary PSK modulators.
Keywords :
differential phase shift keying; error statistics; phase noise; quadrature phase shift keying; 8-ary PSK modulators; DxPSK modulator; bit error rate; data aided phase noise estimation; differential quadrature PSK; setting errors; slight phase distortion; Differential phase-shift keying (DPSK); optical fiber communication; optical phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2034864
