Non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals

A discrete Fourier transform and wireless signal technology, applied in the field of signal processing, can solve problems such as high computational complexity, cumbersome steps, and affect work efficiency, and achieve the effect of simplifying calculation steps and improving operation efficiency

Pending Publication Date: 2021-09-17
UNIV OF SCI & TECH BEIJING +1
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Problems solved by technology

When traditional estimators estimate DOA, the steps are cumbersome and

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  • Non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals
  • Non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals
  • Non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals

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Embodiment Construction

[0173] 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.

[0174] see Figure 1-7 , the present invention provides a technical solution: a non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals, comprising the following steps:

[0175] S1. The estimator utilizes the two highest magnitude discrete Fourier transform (DFT) coefficients of the input data and their two associated adjacent bins, providing accurate DOA estimates;

[0176] S2, analyzing the deviation and mean squ...

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Abstract

The invention discloses a non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals, which utilizes two maximum amplitude discrete Fourier transform (DFT) coefficients of input data and two related adjacent boxes thereof to provide accurate DOA estimation, analyzes deviation and mean square error of the DOA estimation. Simulation results verify the correctness of theoretical derivation. The invention has the beneficial effects that the calculation steps are simplified, and the operation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a non-iterative DOA estimation method for discrete Fourier transform interpolation of wireless signals. Background technique [0002] Direction of Arrival (DOA) estimation can be applied in many fields, such as single-input single-output, multiple-input single-output radar / sonar range-Doppler imaging and array processing, which refers to the use of a limited set of noisy observations, through the parameter or non-parametric methods to find exactly where the source is. In the former approach, it is assumed that the signal is described as a known function, while in the latter approach no assumptions are made about the signal. Parametric algorithms often allow the derivation of optimal estimates, but performance can deteriorate when the assumed signal model does not match the actual signal model. While nonparametric estimation may not provide the best estimation performa...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F17/14G06F17/11G06F17/15G06F30/20
CPCG06F17/141G06F17/11G06F17/15G06F30/20G06F2218/10
Inventor 陈媛郭胜杰田雨露赵长名
Owner UNIV OF SCI & TECH BEIJING
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