CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing) based radar communication integration system

A CE-OFDM and radar technology, applied in the field of radar communication integrated system, can solve the problems of high PARR and large computational load of OFDM system, and achieve the effects of improving super-resolution estimation, solving excessive PAPR, and overcoming the problem of excessive PAPR.

Active Publication Date: 2016-12-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

While the traditional integrated system using OFDM radar has the advantages of high-resolution detection and relatively fast communication, it also has problems. The main reason is that the measurement of high-resolution distance and speed requires a huge amount of calculation, and the OFDM system has inherent PARR. too high problem

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  • CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing) based radar communication integration system
  • CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing) based radar communication integration system
  • CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing) based radar communication integration system

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[0029] Below in conjunction with accompanying drawing, describe technical scheme of the present invention in detail:

[0030] The purpose of the present invention is to propose a radar communication integration scheme based on CE-OFDM radar transmission mode. While the traditional integrated system using OFDM radar has the advantages of high-resolution detection and relatively fast communication, there are also problems. The main reason is that the measurement of high-resolution distance and speed requires a huge amount of calculations, and it cannot solve the inherent problems of the OFDM system. PARR problem. The transmitted signal of the CE-OFDM system satisfies PAPR=0dB, which perfectly solves the problem of excessively high PAPR inherent in the OFDM system, and at the same time meets the needs of high-speed communication.

[0031] The traditional OFDM radar integration scheme is improved on the basis of pulse radar (Pulse Radar), and its transmission signal structure is ...

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Abstract

The invention belongs to the field of radar technologies, and relates to a CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing) based radar communication integration system. The invention is a CE-OFDM based super-resolution radar communication integration scheme which is provided on the basis of a traditional OFDM radar communication integration scheme, compensated through communication information, and capable of improving the effective data transmission rate and solving a problem that the PAPR of OFDM signals is too high. A transmitting terminal firstly turns data to be transmitted into CE-OFDM symbol frames through QAM (Quadrature Amplitude Modulation), IFFT (Inverse Fast Fourier Transform) and phase modulation, and a single pulse in a pulse repetition period is replaced by using a CE-OFDM symbol, so that the data transmission rate is improved, and the problem that the PAPR of transmitted signals is too high is solved. At a receiving terminal, received waveform pulses are demodulated, an inverse process of the transmitting process of the CE-OFDM system is carried out on the signals, and data can be demodulated; and the transmitting waveform is known, pulse compression processing is carried out on received echo waves, and super-resolution estimation for the distance and the speed of a target can be accomplished through decorrelation processing and an MUSIC algorithm after information compensation.

Description

technical field [0001] The invention belongs to the technical field of radar, and relates to a radar communication integrated system based on CE-OFDM (Constant Envelope Orthogonal Frequency-Division Multiplexing, Constant Envelope Orthogonal Frequency-Division Multiplexing). Background technique [0002] With the continuous development of science and technology, in order to meet the communication needs in the new electromagnetic environment, the number of electronic devices installed on the same platform is gradually increasing, resulting in increased system volume, energy consumption and weight, complex operations, increased redundancy, and electromagnetic interference between devices. Increased interference, system performance degradation and many other problems. Using a multi-functional integrated electronic system is an effective way to solve the above problems. The multiplexing method and the signal sharing method are proposed. Using the signal sharing method can realiz...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/30G01S13/58
CPCG01S13/30G01S13/582
Inventor 胡苏黄驿轩郭惠婷柴胜均石荣
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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