A frequency domain adaptive equalization transmission data processing method, data receiving end and storage medium

An adaptive equalization and data transmission technology, which is applied in transmission systems, digital transmission systems, transmitter/receiver shaping networks, etc., can solve problems such as multipath fading, and achieve the effect of increasing processing bandwidth and reducing data delay

CN110855588BActive Publication Date: 2022-06-28BEIJING JUN MAO GUO XING TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-06-28

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Abstract

The invention provides a frequency domain self-adaptive equalization transmission data processing method, a data receiving end and a storage medium, aiming to solve the problem of multipath fading without affecting the data processing bandwidth and satisfying the time delay requirement. The frequency domain adaptive equalization transmission data processing method includes: converting the received time domain data to the frequency domain to obtain a digital sequence Y{N}; establishing a local real-time matching feature vector in the frequency domain according to the transmission rate and bandwidth requirements C{N}, to simulate the actual frequency response of the multipath fading channel h{t}; correlate the digital sequence Y{N} with the local real-time matching feature vector C{N}, and obtain the equalized digital sequence X{ N} and eigenvector feedback data H{N}, wherein the eigenvector feedback data H{N} performs real-time feedback correction on the local real-time matching eigenvector C{N}; area.
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Description

technical field

[0001] The present invention relates to a transmission data processing method. Background technique

[0002] The multipath fading of the channel has always been a problem that plagues wireless communication. The multipath wireless channel model is as follows: figure 1 As shown, if the channel compensation is not performed at the receiving end, there will be a large number of no-code situations when the baseband symbol decision is performed.

[0003] The traditional method is to perform equalization processing in time domain or frequency domain. Although channel compensation is made, it is at the expense of data processing bandwidth and high data delay. SUMMARY OF THE INVENTION

[0004] The purpose of the present invention is to solve the problem of multipath fading under the premise of not affecting the data processing bandwidth and satisfying the time delay requirement.

[0005] In order to achieve the above object, the present invention proposes the fol...

Examples

Embodiment Construction

[0026] The present invention is exemplarily described in detail below with reference to the accompanying drawings and embodiments.

[0027] In this embodiment, the received data is first converted to the frequency domain, the order eigenvectors matching the channel characteristics are selected in real time at the receiving end to perform correlation operations with the received data, and feedback is performed in real time to achieve real-time compensation for the data and reduce The influence of channel multipath fading on wireless communication, adaptive equalizer model such as figure 2 shown.

[0028] 1. Transmitter processing flow

[0029] The digital bit stream d{n} generated by the data source is digitally modulated by the transmitter to obtain the modulation sequence x{n}. First, the block operation is performed on x{n}, that is, each data frame of x{n} is divided into N data blocks x 0 {n}, x 1 {n},...,x N-1 {n}, put the last N of each data frame s symbols are co...