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Design method of radar communication integrated signal based on fd-mimo

A technology of signal design and communication information, applied in the field of radar communication, it can solve the problems that MIMO system cannot distinguish targets of different distances at the same angle, FD-MIMO signal does not consider the communication performance of radar communication coupling relationship, etc., and achieves high communication transmission rate and The effect of radar resolution performance, reducing space for on-board equipment, and reducing transmission power requirements

Active Publication Date: 2022-08-02
NANJING UNIV
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  • Application Information

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Problems solved by technology

[0005] The FD-MIMO signal can perfectly solve the problem that the MIMO system cannot distinguish targets at different distances at the same angle, and improve the dynamic range of the transmission power. However, the traditional FD-MIMO signal does not consider the communication performance and the coupling relationship between radar communications. radar detection

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  • Design method of radar communication integrated signal based on fd-mimo
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Embodiment approach

[0034] The application scenarios of the present invention are as follows: figure 1 Shown: The signal transmitting vehicle transmits the radar communication integrated signal to the target vehicle, the target vehicle receives and processes the integrated signal, and extracts the communication data information from it. At the same time, the transmitting vehicle receives and processes the echo signal, and extracts the radar information in it. The main feature of the system is that the integrated signal shares the signal transmitter, the communication and radar receiving ends process the integrated signal separately and independently, and the transmitted communication information is known at the radar receiving end.

[0035] In the integrated scheme of the present invention, it is assumed that the number of integrated transmitting antennas is M, the number of radar communication receiving antennas is N, and the transmitting frequency on the mth antenna is f m =f 0 +c(m)Δf, where...

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Abstract

The invention discloses an integrated signal design method for radar communication based on FD-MIMO, which belongs to the field of radar communication. The invention proposes an integrated signal design scheme of radar communication based on FD-MIMO based on the traditional FD-MIMO radar waveform design scheme, and maximizes the communication on the premise of ensuring a certain target position estimation Cramero lower bound receiver capacity, and the validity of the waveform design is verified by computer simulation. At the transmitting end, the phase information is inserted based on the transmit waveform of the traditional FD-MIMO radar, that is, the radar waveform is transformed into a radar communication integrated waveform by phase modulation, and a vector to be optimized—beamforming vector is added. By optimizing this vector The best compromise between radar performance and communication performance is achieved, so as to realize the integrated radar communication transmit waveform design that ensures the effective communication transmission rate and at the same time ensures better radar estimation performance.

Description

technical field [0001] The invention belongs to the field of radar communication, and in particular relates to a design method for a radar communication integrated signal (referred to as an integrated signal) based on FD-MIMO (Frequency Diverse Multi Input Multi Output, frequency stepped multiple input and multiple output). 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 comes into being. The goal of Intelligent Transportation Systems (ITS) is to establish an intelligent transportation network between vehicles, between vehicles and roadside infrastructure, to make vehicle-to-vehicle communication and vehicle-to-vehicle communication possible. At the same time, intelligent vehicles should also have the ability to perceive the surrounding environment. Therefore, in the framework definition of ITS, In...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0413H04B7/0426H04B7/06H04B7/08G01S7/02G01S13/50G01S13/931
CPCH04B7/0413H04B7/043H04B7/0617H04B7/086G01S13/50G01S13/931G01S7/02G01S2013/9316
Inventor 唐岚陈强
Owner NANJING UNIV
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