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Carrier phase recovery method and device in mc-oqam system

A carrier phase recovery and carrier technology, applied in the field of communications, can solve problems such as poor estimation phase accuracy, and achieve the effect of improving accuracy and carrier phase recovery capability.

Active Publication Date: 2022-04-05
CHINA SOUTHERN POWER GRID COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the MC-OQAM system, the BPS algorithm is used to estimate the phase of each subcarrier separately, and the estimated phase accuracy obtained is poor

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  • Carrier phase recovery method and device in mc-oqam system
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  • Carrier phase recovery method and device in mc-oqam system

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than...

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Abstract

The carrier phase recovery method and device in a MC-OQAM system provided by the present invention obtain the first phases of the first N symbols of each subcarrier in M ​​subcarriers through the blind phase search BPS algorithm; The first phase of the symbol and the first phase of the j-th symbol of the first sub-carrier obtain the linear relationship of the i-th sub-carrier; obtain the initial phase of the N+r-th symbol of each sub-carrier through the BPS algorithm; Jointly process the initial phases of the N+r symbols of the M subcarriers to obtain the reference phase of the N+r symbols; Phase compensation is performed on the reference phase of the N+rth symbol to obtain the first phase of the N+rth symbol of the i-th subcarrier, thereby improving the accuracy of the estimated phase and improving the carrier phase recovery of the MC‑OQAM system ability.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a carrier phase recovery method and device in an MC-OQAM system. Background technique [0002] As communication networks have higher and higher requirements for information transmission, multi-carrier technology has been widely used. Among them, Multi-carrier offset quadrature amplitude modulation (MC-OQAM) is a technology that supports subcarrier multiplexing, and has the advantages of high spectrum utilization, strong resistance to intersymbol interference, and simple implementation. received widespread attention. Compared with the single-carrier system with the same information rate, the signal constellation diagram information per unit time of a single subcarrier in the MC-OQAM system is less, and the carrier phase recovery ability is poor. [0003] At present, the best method for carrier phase recovery is the Blind phase search (BPS) algorithm. First, multiple phase...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04L27/38
CPCH04L27/0014H04L27/38H04L2027/0026
Inventor 徐键连伟华赵晗祺吴斌洪丹轲黄善国尹珊朱贺杨乃欢
Owner CHINA SOUTHERN POWER GRID COMPANY