Title :
Modified 4th-power phase recovery algorithm for square-16QAM
Author :
Fan, Yi ; Zhang, Xiaoguang ; Xi, Lixia ; Zhang, Wenbo
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A modified phase recovery algorithm with overlap controlled adaptively used for squared 16-QAM is proposed, which is based on the 4th-power algorithm and relieve the problem of block-size-choosing. By using this modified algorithm, 1.8MHz linewidth tolerance for 25G Baud 16-QAM is improved on traditional 4th-power algorithm.
Keywords :
optical fibre communication; optical modulation; quadrature amplitude modulation; recovery; spectral line breadth; 4th-power phase recovery algorithm; block-size-choosing; frequency 1.8 MHz; linewidth tolerance; square-16QAM; Abstracts; Adaptive optics; Adders; Table lookup; 4th-power algorithm; coherent detection; laser linewidth; phase recovery;
Conference_Titel :
Communications and Photonics Conference and Exhibition, 2011. ACP. Asia
Conference_Location :
Shanghai
Print_ISBN :
978-0-8194-8961-6