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Novel carrier frequency offset estimation method for MPSK system

A technology for frequency offset estimation and a new type of carrier, applied in the field of frequency offset estimation of a new type of carrier, can solve problems such as complex implementation, and achieve the effects of small loss of estimation accuracy, reduced computational complexity, and variable estimation range

Active Publication Date: 2020-12-11
湖南国科锐承电子科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the Mengali&Morelli (M&M) algorithm described in Non-Patent Document 14 effectively solves this problem, its implementation is too complicated

Method used

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  • Novel carrier frequency offset estimation method for MPSK system
  • Novel carrier frequency offset estimation method for MPSK system
  • Novel carrier frequency offset estimation method for MPSK system

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Embodiment Construction

[0053] 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.

[0054] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by "front", "rear", "left", "right", "upper" and "lower" in terms are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must ...

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Abstract

The invention discloses a novel carrier frequency offset estimation method for an MPSK system, and the method has certain advantages compared with a conventional method: firstly, a stepping factor d is introduced into an MM algorithm, so as to reduce the calculation complexity of the algorithm, enable the estimation range to be variable, and enable the estimation precision loss to be small, and secondly, enable the estimation range to be larger than that of a Fitz algorithm under certain estimation precision. As the estimation range and the estimation precision are separated, the defect that high estimation precision is achieved at the cost of sacrificing the estimation range is avoided; and through experimental comparison, the method is more flexible and applicable than an MM algorithm and a Fitz algorithm.

Description

technical field [0001] The invention relates to the technical field of wireless communication synchronization, in particular to a novel carrier frequency offset estimation method for an MPSK system. Background technique [0002] In digital communications, the goal of any receiver is to minimize the bit error rate as much as possible. In this sense, the optimal receiver is the one that minimizes the probability of sending bit errors, as in Non-Patent Document 1. [0003] In order to detect the transmitted bit correctly, the receiver must first estimate some synchronization parameters, including carrier phase offset, carrier frequency offset, timing error and so on. This application discusses the problem of carrier frequency offset estimation. As recorded in non-patent literature 2-11, in digital transmission systems, most of the classic synchronizers are based on the maximum likelihood (ML) standard, usually in data-assisted (DA) or non-data-assisted (NDA ) mode to work. ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/00H04L27/20H04W56/00
CPCH04L27/0014H04L27/2003H04L2027/0026H04W56/0035
Inventor 朱江满欣姜南杨虎高凯杨军李二保胡登鹏王新建
Owner 湖南国科锐承电子科技有限公司