Share Email Print
cover

Proceedings Paper

A parallel timing synchronization architecture for all-digital coherent receiver
Author(s): Yunpeng Zhang; Chaolei Yue; Ren Zhu; Xia Hou; Weibiao Chen
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Timing synchronization is critical in digital demodulation systems such as intradyne optical receivers. In this paper, a novel timing recovery method for all-digital coherent receivers is proposed. With the help of a parallel architecture, the new method can be implemented on ASIC or FPGA platform, especially when the symbol rate is much higher than the clock rate of FPGAs. Through adjusting the frame structure in the parallel interpolator, the receiver synchronizes its symbol rate with the transmitter. Different from existing parallel timing recovery methods, the proposed method does not adjust the period between adjacent frames of samples, which can be beneficial to the subsequent processing in hardware. The performance is tested by simulation in QPSK modulation. Under relative clock offset between ±50 ppm and jitter noise with 0.3% standard deviation, the proposed method shows almost no degradation compared with its serial equivalent. Combined with different timing error detection algorithms, this method can be used in kinds of modulation formats like MPSK and QAM.

Paper Details

Date Published: 20 December 2019
PDF: 6 pages
Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 1120915 (20 December 2019); doi: 10.1117/12.2543630
Show Author Affiliations
Yunpeng Zhang, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Univ. of Chinese Academy of Sciences (China)
Chaolei Yue, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Univ. of Chinese Academy of Sciences (China)
Ren Zhu, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Xia Hou, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Weibiao Chen, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 11209:
Eleventh International Conference on Information Optics and Photonics (CIOP 2019)
Hannan Wang, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray