Equalization method and device in sv-dd system

A technology of SV-DD and equalization method, which is applied in the field of equalization method and device, can solve the problem of sacrificing transmission rate, etc., and achieve the effect of no data redundancy, good compensation effect, and high estimation accuracy

Active Publication Date: 2020-07-28
BEIJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, the method based on the training sequence is at the expense of the transmission rate, which has obvious defects.

Method used

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  • Equalization method and device in sv-dd system
  • Equalization method and device in sv-dd system
  • Equalization method and device in sv-dd system

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Embodiment Construction

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0025] figure 1 A schematic flowchart of an equalization method in an SV-DD system provided by an embodiment of the present invention, including:

[0026] S101. Perform windowing interception on the signal with a preset length according to the receiving timing, and obtain the windowed signal as input data required for one iteration of the Kalman ...

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Abstract

The embodiment of the invention provides an equalization method and device in an SV-DD system. the method comprises the steps: carrying out the windowing interception of a signal according to a receiving time sequence and a preset length, and obtaining a windowing signal, and enabling the windowing signal to serve as the input data required by the one-time iteration of a Kalman filter; And performing RSOP damage compensation on the window dividing signal in a time domain according to a Kalman filter equalization algorithm, and performing CD damage compensation on the window dividing signal subjected to RSOP damage compensation in a frequency domain. Compared with the prior art, the embodiment of the invention has the advantages of better compensation effect, no data redundancy and very high estimation accuracy on the accumulated CD.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of communications, and more specifically, to an equalization method and device in an SV-DD system. Background technique [0002] The vigorous development of emerging services such as the Internet of Things, virtual reality, and cloud computing has driven the demand for short-distance interconnection between data centers, and the distance between data centers ranges from a few hundred meters to tens of kilometers. In such an application scenario, it is necessary to consider not only the cost of the transceiver, but also the transmission capacity of the system. The recently proposed "Stokes vector (Stokes vector) direct detection (SV-DD)" scheme uses one polarization state to transmit the modulated signal and the other orthogonal polarization state to transmit the carrier, with the same spectrum as the single polarization coherent detection system Utilization rate, and more economical, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/25H04B10/2507H04B10/2513H04L27/34
Inventor 崔楠张晓光张文博席丽霞唐先锋郑子博
Owner BEIJING UNIV OF POSTS & TELECOMM
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