Abstract
The integration technology of radar and communication is an effective way to realize resource platform sharing, system advantages complementation and comprehensive performance improvement. Aiming at the shortcomings of the current integrated waveform, an integrated waveform for MIMO radar and communication is proposed in the paper based on orthogonal frequency division complex modulation (OFDCM), which is of favourable performance on the radar and communication. Theoretical analysis and simulation experiments show that the designed waveform not only acquires excellent communication performance with high transmission rate and large transmission capacity, but also features satisfactory performance for radar targets detection such as wide bandwidth, interference rejection, low interception and high doppler tolerance.
Highlights
The modern information war has given birth to the rapid development of integration technology of radar and communication
In reference [4], communication information is mapped to LFM signal sequence with different initial frequency, and integration waveform whose initial frequency is modulated by the communication information is proposed, but it is difficult to balance data transmission rate and signal correlation requirements
In reference [5], the communication information is modulated on the phase of the LFM signal by minimum shift keying (MSK), only one communication message can be transmitted at one time, both the data transmission rate and frequency band utilization rate are very low
Summary
The modern information war has given birth to the rapid development of integration technology of radar and communication. In reference [5], the communication information is modulated on the phase of the LFM signal by minimum shift keying (MSK), only one communication message can be transmitted at one time, both the data transmission rate and frequency band utilization rate are very low. One of the difficult points is to seek integrated waveform with both excellent performance of radar and communication In this background, an integrated waveform for MIMO radar and communication based on orthogonal frequency division complex modulation (OFDCM) is proposed in the paper. The designed integrated signal can effectively utilize the spectrum resources and has the advantages of high transmission rate and large transmission capacity, and could overcome the problem that poor performance of the pure communication signal in radar targets detection
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