Title:
DATA RECOVERING METHOD AND APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/001651
Kind Code:
A1
Abstract:
A data restoring method and apparatus, for resolving the problem of how to perform stable and accurate data recovery on any polarization signal received by a simple coherent optical receiver. The method comprises: receiving a polarization insensitive signal, performing frame synchronization on the polarization insensitive signal, and determine a frame start position; extracting synchronization header overhead and DSP overhead according to the frame start position and a frame structure; performing frequency offset compensation on a data portion in the polarization insensitive signal according to the DSP overhead; performing carrier phase compensation on the synchronization header overhead according to the synchronization header overhead of a first reference sequence and determining an initial MIMO coefficient according to the synchronization header overhead after carrier phase compensation; next, determining an initial phase; determining updated MIMO coefficient and updated phase according to the initial MIMO coefficient and the initial phase; and performing carrier phase compensation and polarization de-multiplexing according to the updated MIMO coefficient and the updated phase.
Inventors:
LE YANSI (CN)
ZHOU XU (CN)
FENG ZHIYONG (CN)
ZHOU XU (CN)
FENG ZHIYONG (CN)
Application Number:
PCT/CN2019/093888
Publication Date:
January 02, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04B10/25; H04B10/61; H04J3/06
Domestic Patent References:
| WO2017217217A1 | 2017-12-21 | |||
| WO2017220153A1 | 2017-12-28 |
Foreign References:
| CN102047582A | 2011-05-04 | |||
| CN104303435A | 2015-01-21 | |||
| CN107317629A | 2017-11-03 |
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
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