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Radar communication integrated 5G signal design method

A signal design and radar technology, which is applied in the field of 5G communication, can solve the problems of short duration of a single OFDM symbol, difficulty in obtaining the optimum at the same time, and inability to obtain the detection distance, etc., so as to achieve the effect of high optimization efficiency

Pending Publication Date: 2022-04-05
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also two major technical problems: 1) The duration of a single OFDM symbol in the 5G communication frame structure is short, and the direct use of a single OFDM symbol for target detection cannot obtain a suitable detection distance
2) There is a mutual constraint relationship between the communication performance and the detection performance of the integrated signal, and it is difficult to obtain the optimum at the same time

Method used

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  • Radar communication integrated 5G signal design method
  • Radar communication integrated 5G signal design method
  • Radar communication integrated 5G signal design method

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Embodiment 1

[0034] This embodiment takes figure 1 The typical integrated radar communication system shown is an example, and the content of the present invention is described, and the implementation process of the present invention includes the following steps:

[0035] Step 1: Establish a radar communication integration scene map and initialize system parameters

[0036] like figure 1 , a typical radar communication integrated system Ω includes a radar communication integrated 5G base station A and a user terminal B. The radar communication integrated 5G base station is used to transmit the integrated signal and receive the detection echo signal, and the user terminal B is used to receive the communication signal. Signal. The center frequency of the system is f c = 3.4GHz, the detection area Φ irradiated by the main lobe of the radar communication integrated 5G base station A antenna is divided into M=300 distance resolution units along the distance direction, and there are L=411 comm...

Embodiment 2

[0086] The scheme of the present invention is further verified according to a Matlab simulation example below. The corresponding values ​​of relevant parameters are shown in Table 1.

[0087] Table 1

[0088] parameter symbol value frequency domain subcarrier spacing △f 60kHz signal bandwidth B r

[0089] image 3 and Figure 4 It is a comparison chart of CDF curves of peak-to-average power ratio and signal-to-noise ratio restoration factor under different modulation intervals in the method of the present invention. It is easy to see that under the method proposed by the present invention, the larger the modulation interval is, the smaller the peak-to-average power ratio of the signal is, and the larger the signal-to-noise ratio recovery factor is. Figure 5 and Figure 6 It is a comparison chart of CDF curves of peak-to-average power ratio and signal-to-noise ratio recovery factor under different modulation intervals in the method of the prese...

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Abstract

The invention discloses a radar communication integrated 5G signal design method, which is applied to the fields of 5G communication, low-altitude target detection and the like, and mainly solves the problem that communication signals and radar signals are relatively independent in the existing radar communication integrated technology. The method comprises the following steps: firstly, establishing a radar communication integrated signal model based on a 5G communication frame structure; secondly, establishing an optimization model by taking a designed signal frequency domain subcarrier coefficient as an optimization variable and taking detection performance and communication performance as objective functions; and finally, solving the optimization model by using a time / frequency domain alternating design algorithm based on interval linear phase compression modulation, and obtaining a designed radar communication integrated 5G signal. The method has the advantages that the algorithm optimization efficiency is high, and combination of radar signals and communication signals can be achieved to a large extent.

Description

technical field [0001] The invention belongs to the field of 5G communication, and in particular relates to a radar communication integrated signal design technology in a 5G communication scenario. Background technique [0002] Different from traditional communication base stations, 5G communication base stations use phased array antennas, which can realize fast and flexible scheduling of antenna main lobe beams, and create conditions for the use of 5G communication base stations to realize radar communication integration. 5G communication usually uses Orthogonal Frequency Division Multiplexing (OFDM) signals, and OFDM signals are also used in radar target detection due to their high spectrum efficiency and strong anti-interference performance. However, due to the difference between the communication mechanism and the detection mechanism, it is difficult for 5G communication OFDM signals to effectively detect targets. Therefore, it is necessary to design 5G communication OFD...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F111/06
Inventor 张天贤王舒玉孔令讲方学立杨晓波蔡光耀王睿甲
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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