Title :
Wide-range and fast-convergence frequency offset estimator by BER-aiding for optical coherent receivers
Author :
Li, Zhiyu ; Chen, Xue ; Zhou, Weiqin ; Zhu, Rai ; Zhou, Xian ; Zhang, Zhiguo
Author_Institution :
Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, No.10 Xi Tu Cheng Road, Haidian, 100876, China
Abstract :
PADE, a digital frequency offset (FO) estimator for optical coherent receivers, has a wide stable-running estimation range. But it converges correctly only when initialized FO is near to real FO. We present a solution to break the restriction by BER aiding, which is proved to be effective by simulation.
Keywords :
Bit error rate; Convergence; Frequency estimation; High speed optical techniques; Laboratories; Optical fiber communication; Optical fiber polarization; Optical receivers; Optical transmitters; Switches;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
