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SVD precoding MIMO-OTFS radar target detection method

A MIMO-OTFS and radar target technology, applied in the field of digital signal processing, can solve problems such as performance degradation and inability to meet high mobile communication requirements, so as to reduce bit error rate, improve wireless signal transmission quality, high detection accuracy and stability Effect

Pending Publication Date: 2021-12-31
XIAN UNIV OF SCI & TECH
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Problems solved by technology

In these scenarios, Orthogonal Frequency Division Multiplexing (OFDM) based systems face great challenges in estimating and compensating for Doppler shift due to multipath effects and high Doppler shift, and due to severely degraded performance
Therefore, the classic OFDM cannot meet the needs of high mobile communication

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  • SVD precoding MIMO-OTFS radar target detection method
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Embodiment Construction

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. 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.

[0047] In an embodiment of the present invention, a MIMO-OTFS radar target detection method with SVD precoding is provided, and the method is applied in a MIMO-OTFS system (radar target detection system).

[0048] Such as figure 1 As shown, it is a schematic diagram of the MIMO-OTFS system model in the present invention, and the transmitting end has multiple transmitting antennas, specifically, it can be recorded as N t There are multiple receiving antennas at the receiving end, ...

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Abstract

The invention relates to the technical field of digital signal processing, and provides an SVD precoding MIMO-OTFS radar target detection method, which is applied to an MIMO-OTFS system, and comprises the following steps that a sending end carries out first preprocessing, QAM modulation, second preprocessing and OTFS modulation on to-be-sent original data in sequence to generate a time domain sending signal, and the time domain sending signal is converted into a time domain receiving signal; a receiving end receives the time domain receiving signal, OTFS demodulation, third preprocessing, QAM demodulation and fourth preprocessing are sequentially carried out to obtain a receiving data symbol, and a NaNM-dimensional receiving signal is obtained according to the output vector y with the dimension being NaNM*1 and the receiving data symbol; and radar parameter estimation is carried out according to the NaNM dimension receiving signal. According to the method, the complexity of eliminating signal interference by the receiving end is greatly reduced, and the method has relatively high detection precision and stability.

Description

technical field [0001] The invention relates to the technical field of digital signal processing, in particular to an SVD precoded MIMO-OTFS radar target detection method. Background technique [0002] The key factor to promote network communication in a high-mobility environment is the ability to continuously track dynamically changing environmental states and make corresponding optimizations by sharing information. However, the high cost of spectrum resources and hardware devices makes it necessary for both communication and state estimation to operate by sharing the same frequency band. In order to realize the precise positioning of autonomous vehicles in complex environments, it is necessary to integrate the functions of radar perception and wireless communication on the vehicle, that is, the radar communication integrated system. And this radar communication integrated system can solve the problem of the current shortage of spectrum resources, and through the integrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/50
CPCG01S13/50
Inventor 王斌袁壮潘寅飞孙彦景周华吉邓军张育芝刘洋
Owner XIAN UNIV OF SCI & TECH
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