Design method of radar communication integrated signal based on ce-ofdm

A CE-OFDM, signal design technology, applied in the reflection/re-radiation of radio waves, digital transmission systems, instruments, etc., can solve the problem of high side lobes of ambiguity functions, poor autocorrelation performance of CE-OFDM signals, and inability to effectively process signals and other problems, to achieve the effect of high radar resolution performance and high communication transmission rate

Active Publication Date: 2020-09-25
NANJING UNIV
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Problems solved by technology

But at the same time, there are problems that the autocorrelation performance of CE-OFDM signal is poor, and the sidelobe of ambiguity function is high. The traditional radar signal processing method based on signal autocorrelation cannot effectively process the signal.

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  • Design method of radar communication integrated signal based on ce-ofdm
  • Design method of radar communication integrated signal based on ce-ofdm
  • Design method of radar communication integrated signal based on ce-ofdm

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Embodiment Construction

[0030] The invention discloses a radar communication integrated signal design method based on CE-OFDM, which is suitable for vehicle-vehicle communication and radar ranging in the scene of the Internet of Vehicles. The integrated signal design realizes the shared transmitter of radar communication, which can effectively reduce the Equipment space, saving spectrum resources. While the traditional OFDM-based radar communication integration system has high resolution and high data communication data rate, it also has the problem of excessively high PAPR inherent in the OFDM system. The radar communication integrated signal based on CE-OFDM can perfectly solve this problem, the signal PAPR is 0, and the transmission power requirement is reduced at the same time.

[0031] But at the same time, the problem is that under the premise of ensuring the effective information transmission rate performance of the integrated system, the integrated signal correlation performance is poor, and ...

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Abstract

The invention discloses a radar-communication integrated signal design method based on CE-OFDM. A radar-communication integrated signal design scheme based on the CE-OFDM is proposed on the traditional radar-communication integrated signal design scheme based on the OFDM, and the problem that an OFDM system is excessive in peak-to-average ratio is effectively solved in the premise of guaranteeingthe effective communication transmission rate. At a transmitting end, bit data information is modulated as a CE-OFDM signal through additional phase after the QAM modulation and IFFT transformer; at areceiving end, the sent OFDM signal can be recovered after performing the phase demodulation based on anti-tangent on the signal; when performing the radar signal processing, the problem that the signal autocorrelation is bad is solved by adopting the novel radar signal processing method based on a modulation symbol sequence, and the high-resolution estimation on the target distance is realized.

Description

technical field [0001] The invention belongs to the field of radar communication, and relates to a design method of a radar communication integrated signal (abbreviated as integrated signal) based on CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing, Constant Envelope Orthogonal Frequency-Division Multiplexing). Background technique [0002] With the rapid development of computer technology, wireless communication technology and sensor technology, the idea of ​​using reasonable information and sensor technology to control road traffic came into being. The goal of Intelligent Transportation Systems (ITS) is to establish an intelligent transportation network between vehicles, between vehicles and roadside infrastructure, so that vehicle-to-vehicle communication and vehicle-to-thing communication become possible. At the same time, smart vehicles should also have the ability to perceive the surrounding environment. Therefore, in the framework definition of I...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26G01S13/931
CPCG01S13/931H04L27/2602H04L27/2614
Inventor 唐岚李璇张柯张龙辉柏业超张兴敢
Owner NANJING UNIV
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