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Surrounding type pilot frequency design aided channel estimation method

A technology for pilot frequency design and channel estimation, applied in baseband systems, digital transmission systems, electrical components, etc., can solve problems such as difficulties, increased pilot frequency overhead, and no applicable threshold value scheme, and achieves obvious optimization effects and pilot frequency. The effect of cost optimization

Pending Publication Date: 2022-01-28
XI AN JIAOTONG UNIV
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Problems solved by technology

However, since its pilot overhead will increase significantly with the increase of the maximum delay and maximum Doppler, and the threshold in the threshold decision scheme does not have a reasonable value scheme suitable for common scenarios, in practical applications it will create greater difficulties

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  • Surrounding type pilot frequency design aided channel estimation method
  • Surrounding type pilot frequency design aided channel estimation method
  • Surrounding type pilot frequency design aided channel estimation method

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Embodiment Construction

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are a part of the present invention, not all embodiments, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in 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 shall fall within the protection scope of the present invention.

[0038] The schematic diagrams of the structures according to the disclosed embodiments of th...

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Abstract

The invention discloses a surrounding type pilot frequency design aided channel estimation method, which comprises the following steps that: 1) a sending end generates random bit data, processes the random bit data into a symbol of a delay-Doppler plane, and then becomes a time domain signal after inverse symplectic Fourier transform and Hisenberg transform, and finally, the time domain signal is sent by using a channel represented in a delay-Doppler form; and (2) a receiving end obtains a time domain receiving signal, a delay-Doppler plane signal of the receiving end is obtained after Wigner transform and symplectic Fourier transform, a channel coefficient is obtained through pilot frequency detection of the receiving end, and channel estimation assisted by surrounding pilot frequency design is completed, and the method can improve the spectrum efficiency.

Description

technical field [0001] The invention belongs to the field of wireless communication, and relates to a channel estimation method aided by surrounding pilot frequency design. Background technique [0002] In 5G and subsequent communications, high-mobility scenarios such as high-speed train communications and satellite communications will become an important application scenario. In these scenarios, the most important feature is its high Doppler shift. The modulation technology we currently use in 4G and 5G communications, Orthogonal Frequency Division Multiplexing (OFDM), is very sensitive to Doppler frequency offset, and its performance will be greatly reduced after being severely affected. To solve the reliable application of wireless communication in high-mobility scenarios, Orthogonal Time-Frequency-Space (OTFS) modulation is proposed to counteract the effect of high Doppler frequency offset. [0003] Just like the previous generations of modulation technology, OTFS modu...

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Application Information

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IPC IPC(8): H04L25/02
CPCH04L25/0226H04L25/0228Y02D30/70
Inventor 任品毅谭圆缘杜清河
Owner XI AN JIAOTONG UNIV
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