Title :
Quality Monitoring of DxPSK Signals by Using Differential Phasor Diagram
Author :
Takushima, Yuichi ; Choi, Hyeon Yeong ; Kim, Hoon ; Chung, Yun C.
Author_Institution :
Dept. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
We describe a new method for quantitative evaluation of the quality of multilevel differential phase-shift-keyed (DxPSK) signals by using a differential phasor monitor. This method measures the phase deviation of the symbols in the differential phasor diagram and estimates the bit-error rate (BER) by using a simple relation based on the Q -factor defined for multilevel DxPSK signals. We demonstrate that the proposed method can accurately estimate the BER of differential quadrature PSK and 8-ary PSK signals.
Keywords :
Q-factor; differential phase shift keying; error statistics; optical communication; quadrature phase shift keying; DxPSK signal; Q -factor; bit-error rate estimation; differential phase-shift-keyed signal; differential phasor diagram; differential quadrature PSK; quality monitoring; Differential phase-shift keying; optical communication; optical phase modulation;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2025869
