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Cyclic correlation channel estimation method and device

A channel estimation and channel technology, applied in the direction of digital transmission system, electrical components, modulated carrier system, etc., can solve the problem that single-carrier communication system is difficult to quickly estimate the amplitude and phase information of multi-path channels, and achieve completeness and channel estimation Accurate, high channel accuracy effect

Active Publication Date: 2017-12-22
BEIJING RINFON TECH CO LTD
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Problems solved by technology

[0096] Therefore, there is a need for a cyclic correlation channel estimation method and device that can solve the problem that a single-carrier communication system is difficult to quickly estimate the amplitude and phase information of each path in a multipath channel

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  • Cyclic correlation channel estimation method and device
  • Cyclic correlation channel estimation method and device
  • Cyclic correlation channel estimation method and device

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[0142] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be constrained by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0143] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or mo...

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Abstract

The invention relates to a cyclic correlation channel estimation method and device. The method comprises the following steps: S110, providing a cyclic sequence set [CH1 CH2], wherein the content of the sequence CH1 is the same as the content of the sequence CH2; S120, performing channel estimation for the cyclic sequence set [CH1 CH2] through cyclic shift to obtain a time-domain channel h; S130, performing FFT for the time-domain channel to obtain a frequency-domain channel H; S140, adjusting the amplitude of the frequency-domain channel to ensure that the signal effective value RMS(h) of the frequency-domain channel is equal to RMS(H); and S150, performing interpolation calculation for the adjusted frequency-domain channel, and filtering to obtain a channel estimation value. According to the cyclic correlation channel estimation method and device disclosed by the invention, the problem that a single carrier communication system is difficult to quickly estimate the amplitude and phase information of each path in multi-path channels can be solved.

Description

technical field [0001] The present invention relates to the field of single-carrier systems, in particular to a method and device for estimating a cyclic correlation channel. Background technique [0002] In wireless communication, electromagnetic waves will encounter various obstacles when propagating in free space, resulting in reflection, refraction, scattering and other phenomena. These phenomena lead to the existence of countless paths between the transmitter and the receiver. The propagation delay of radio waves on each path is different, and the magnitude of fading is different, thus forming the multipath effect of the wireless channel. This effect causes the received symbols to be distorted, and the transmitted symbols cannot be correctly judged. This is what we often call the intersymbol interference problem. The wireless channel transmits signals through the propagation of electromagnetic waves in space. Due to the characteristics of reflection, scattering and fad...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26
CPCH04L27/2669H04L27/2691H04L27/2692H04L27/2695
Inventor 熊军
Owner BEIJING RINFON TECH CO LTD
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