Phase noise compensation device and method, receiver

A phase noise compensation and phase noise technology, which is applied in the field of phase noise compensation devices and methods, and receivers, can solve problems such as phase noise sensitivity, and achieve the effect of accurately estimating phase noise and ensuring transmission efficiency and performance

Active Publication Date: 2022-05-31
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complex QAM modulation formats are particularly sensitive to phase noise

Method used

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  • Phase noise compensation device and method, receiver
  • Phase noise compensation device and method, receiver
  • Phase noise compensation device and method, receiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] a first determining unit 101, which is used to determine the estimated value of the imperfection parameter of the transmitter according to the received signal;

[0031] In this embodiment, for example, the imperfection parameters of the transmitter include at least one of the following:

[0033] In this embodiment, because the transmitter is not ideal, the parameters remain relatively stable for a certain period of time, for example, several seconds

[0039]

[0042]

[0045] In this embodiment, the training sequence signal inserted into the transmission signal of the transmitter may be continuously inserted,

[0046] For example, the training sequence signal inserted into the transmitted signal can be expressed as:

[0050]

[0052] In this embodiment, the third determining unit 103 determines the phase noise of the received signal according to the correction signal. by

[0053] FIG. 2 is a schematic diagram of the third determining unit 103 in Embodiment 1 of the present ...

Embodiment 2

[0071] FIG. 5 is a schematic block diagram of a system configuration of a receiver according to Embodiment 2 of the present invention. As shown in FIG. 5, receiver 500

[0074] As shown in FIG. 5, after the received signal is processed by the equalization unit 501 and the frequency offset compensation unit 502, the received signal is processed by the phase noise

Embodiment 3

[0079] FIG. 6 is a schematic diagram of a phase noise compensation method according to Embodiment 3 of the present invention. As shown in Figure 6, the method includes:

[0080] Step 601: Determine the estimated value of the imperfection parameter of the transmitter according to the received signal;

[0083] Step 604: Perform phase noise compensation on the received signal according to the phase noise of the received signal.

[0084] FIG. 7 is another schematic diagram of a phase noise compensation method according to Embodiment 3 of the present invention. As shown in Figure 7, the method package

[0086] Step 702: Determine the estimated value of the imperfection parameter of the transmitter according to the received signal;

[0090] Step 706: Perform phase noise compensation on the received signal according to the phase noise of the received signal at all times.

[0094] The method for performing damage monitoring in a phase noise compensation device or receiver described in co...

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Abstract

Embodiments of the present invention provide a phase noise compensation device and method, and a receiver. The correction signal is determined according to the estimated value of the transmitter’s imperfect parameter and the training sequence signal in the transmitted signal, and the phase noise of the received signal is determined according to the corrected signal, so the influence of the transmitter’s imperfection on the phase noise is considered, and it can be accurately estimated Therefore, phase noise can be effectively compensated to ensure the transmission efficiency and performance of the system.

Description

Phase noise compensation device and method, receiver technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a phase noise compensation device and method, and a receiver. Background technique [0002] Coherent optical communication system has huge transmission bandwidth, great capacity expansion potential, extremely low transmission loss and low cost. Cost and other advantages occupy an important position in the communication transmission network. To build a low-cost, large-capacity, high-spectrum-efficiency phase In dry optical communication networks, choosing a suitable modulation format is the key. In recent years, flexible and variable modulation formats have been used to increase the transmission speed The most efficient way to achieve high frequency has quickly become the focus of attention, high-order Quadrature Amplitude Modulation (QAM, Quadrature Amplitude Modulation) Modulation) has become the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/61
CPCH04B10/6165H03D3/005H04L27/3809H03D3/242H04L2027/0038H04L27/2275
Inventor 宿晓飞陶振宁
Owner FUJITSU LTD
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