OFDM-based radar communication integrated signal sidelobe suppression method

A side lobe suppression and signal technology, applied in modulation carrier systems, instruments, digital transmission systems, etc., can solve the problems of high side lobes, excessive spurious peaks in OFDM radar communication integrated signals, etc., achieving simple algorithm, reduced performance, The effect of a small amount of computation

Pending Publication Date: 2021-05-28
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a sidelobe suppression method based on the OFDM radar communication integr

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  • OFDM-based radar communication integrated signal sidelobe suppression method
  • OFDM-based radar communication integrated signal sidelobe suppression method
  • OFDM-based radar communication integrated signal sidelobe suppression method

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[0055]DETAILED DESCRIPTION OF THE PREFERRED DESCRIPTION OF THE DRAWINGS FIG.

[0056]The experimental parameters involved in this embodiment are shown in Table 1:

[0057]Table 1 Experimental parameters according to this embodiment

[0058]

[0059]Such asfigure 1 The OFDM Radar Communication Integrated System Frame Map is shown in step 1 to 4, as follows;

[0060]Step 1. After the experimental parameters of Table 1, the bandwidth b = 120 MHz, the signal repeating period Tr = 1 ms OFDM radar communication integrated signal, the integrated discrete signal signal is real, such asimage 3 Indicated;

[0061]Step 2. The receiving end communicates data demodulation on the radar communication integrated signal to obtain the original transmission information, according to ifFigure 4 The relationship between the communication error rate and the signal to noise ratio, in order to meet the reliability of the communication system, 10-5The communication bit error rate is required, and the signal-to-noise ratio is...

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Abstract

The invention relates to an OFDM-based radar communication integrated signal sidelobe suppression method, which comprises the following steps of: designing a reference signal of which the length is greater than the original length for a received OFDM radar communication integrated signal, and designing a mismatched filter adaptive to the reference signal; and by performing expansion and merging calculation on coefficients of a Helvetz polynomial of an OFDM radar communication integrated signal generated after convolution of the Helvetz polynomial and the Helvetz polynomial, suppressing side lobes and pseudo peaks of the received OFDM radar communication integrated signal, and enabling the algorithm in the invention to allow the OFDM integrated shared signal to have both high-speed communication and high-performance radar detection performance.

Description

technical field [0001] The invention relates to a signal side lobe suppression method based on OFDM radar communication integration, and belongs to the technical field of radar communication integration signal processing. Background technique [0002] With the continuous deepening of informatization, radar and communication systems, as the most important electronic systems, have been widely used in both military and civilian fields. In some specific applications, it is necessary to combine the two functions to form an integrated radar communication system to reduce system redundancy, volume, weight, energy consumption, and operational complexity. [0003] Nowadays, the core difficulty of the radar communication integrated system lies in the integrated signal design. Radar and communications have many inherent, irreconcilable contradictions in signal design. This is mainly because the radar is to maximize and undistort the detection of channel information, which puts forwar...

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Application Information

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IPC IPC(8): H04L27/26G01S7/28
CPCH04L27/2601H04L27/2607G01S7/2813
Inventor 王杰雍萍辛月马海兰裴泽琳丁志清赵廷刚
Owner NANJING UNIV OF INFORMATION SCI & TECH
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