NC-CE-OFDM radar communication integrated waveform design method

A NC-CE-OFDM and NC-OFDM technology, applied in the field of radar communication integration, can solve the problems of primary user transmission distortion, reduce NC-OFDM signal PAPR, increase active subcarrier interference, etc., to improve efficiency and improve Spectrum utilization and the effect of alleviating the tension of spectrum resources

Pending Publication Date: 2022-03-01
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology

Therefore, both Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) can cause distortion of primary user transmission
Technologies based on time domain or distortion, such as clipping and filtering, will increase the interference of active subcarriers; technologies based on adjacent subcarriers in the frequency domain, such as coding, cannot perceive the position of active subcarriers, resulting in intersymbol interference; Tech...

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  • NC-CE-OFDM radar communication integrated waveform design method
  • NC-CE-OFDM radar communication integrated waveform design method
  • NC-CE-OFDM radar communication integrated waveform design method

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Embodiment Construction

[0087] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0088] The present invention provides a radar communication integrated waveform design method of NC-CE-OFDM, such as figure 1 As shown, it includes the following steps:

[0089] S1: Set signal parameters and initialize the target state:

[0090] During each Ts module time, an N DFT The IDFT of the point calculates a time sampling value module {x[n]}, the sampling rate F 0 =N DFT / T; The input of IDFT is a conjugate symmetric data vector after zero padding: In the f...

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Abstract

The invention discloses an NC-CE-OFDM radar communication integrated waveform design method, and the method comprises the steps: setting a signal parameter, and initializing a target state; determining a subcarrier position and a PAPR condition of an unoccupied frequency band through a dynamic spectrum sensing and channel estimation technology; the PAPR is reduced by using a phase technology, and communication information is modulated on a subcarrier which does not occupy the bandwidth for transmission; solving the error rate of the discontinuous constant envelope integrated signal in the additive white Gaussian noise channel; solving a fuzzy function in the radar communication integrated signal; and solving the distance resolution, Doppler resolution and Doppler tolerance characteristics of the integrated signal waveform according to the fuzzy function. According to the method, the discontinuous OFDM signal and the phase modulation technology are combined, the problem of spectrum resource shortage can be relieved, and the maximum utilization rate of the discontinuous OFDM signal spectrum is achieved.

Description

technical field [0001] The invention belongs to the field of radar communication integration, and relates to a phase modulation technology of a discontinuous OFDM system, specifically an NC-CE-OFDM radar communication integration waveform design method, which can be used for radar communication integration of discontinuous OFDM signals Waveform design to reduce PAPR. Background technique [0002] With the rapid development of electronic information technology, the integrated combat platform mainly supported by discontinuous OFDM signals has become the backbone of radar communication integration, which can greatly improve the efficiency of spectrum utilization while relieving the shortage of spectrum resources to the greatest extent. . However, to achieve the development of discontinuous OFDM integration, it mainly depends on the suppression of PAPR by discontinuous OFDM signals. As the preferred way to suppress the PAPR of OFDM signals, phase modulation technology is of gre...

Claims

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Application Information

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IPC IPC(8): G01S7/41
CPCG01S7/41
Inventor 靳标宋瑶武浩正唐裕峰张贞凯魏雪云
Owner JIANGSU UNIV OF SCI & TECH
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