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Method and system for carrier frequency offset estimation and recovery in wireless communication

A technology of wireless communication and carrier frequency offset, applied in modulation carrier system, transmission system, carrier adjustment, etc., to achieve the effect of low algorithm complexity, high data throughput rate, and high processing capacity

Active Publication Date: 2021-03-23
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For ultra-high-speed wireless communication systems, it is difficult for the existing technology to meet the above-mentioned four aspects of the index requirements at the same time

Method used

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  • Method and system for carrier frequency offset estimation and recovery in wireless communication
  • Method and system for carrier frequency offset estimation and recovery in wireless communication

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Any feature disclosed in this specification (including the abstract and drawings), unless specifically stated, can be replaced by other equivalent or similar purpose alternative features. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0032] The present invention provides a wireless communication carrier frequency offset estimation method, such as figure 1 As shown, the specific methods include,

[0033] Solve the first polar coordinate of the data complex baseband signal, solve the original digital complex base...

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Abstract

The invention provides a wireless communication carrier frequency offset estimation method and system and a wireless communication carrier recovery method and system. According to the frequency offsetestimation method and system, an improved kay algorithm is adopted, and on the basis that the wide frequency offset capture range is guaranteed, the algorithm complexity is lower, and hardware implementation is easier; according to the communication carrier recovery method and system combining feedforward estimation with feedback tracking, the feedforward output Pout is subtracted by the first-level Cordic output phase theta of the feedback part to serve as the input of the feedback part; and the symbol rate processing capacity is high, the frequency offset capture range is wide, the residualerror is small, the algorithm complexity is low, and the ultra-high data throughput rate is easily achieved at the existing device level.

Description

technical field [0001] The present invention relates to a method and system for estimating and restoring frequency offset of wireless communication carrier, in particular to a method and system for estimating and restoring frequency offset of wireless communication carrier in an ultra-high-speed wireless communication system. Background technique [0002] For IF digital receivers, the frequency offset will have a bad impact, it will cause the signal spectrum after the orthogonal digital down-conversion to move, and then cause the bit synchronization point to shift, which will seriously affect the system performance of the receiver, and eventually lead to The receiving bit error rate increases, and even the information cannot be received correctly. Therefore, the estimation and correction of frequency offset is an important research content. Strictly speaking, the impact of the Doppler effect and the local carrier frequency difference on receiver performance are different. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00
CPCH04L27/0014H04L2027/0026
Inventor 费炳超
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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