Design of Radar-Communication Integrated Signal Based on OFDM
With the development of information technology, the electromagnetic environment is becoming more and more complex, and the demand for bringing together electronic devices of different functions is urgently increasing. Among them, the radar-communication i
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School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin, China [email protected], [email protected] 2 Peng Cheng Laboratory, Shenzhen 518000, China
Abstract. With the development of information technology, the electromagnetic environment is becoming more and more complex, and the demand for bringing together electronic devices of different functions is urgently increasing. Among them, the radar-communication integration is a research hotspot. The current radar-communication integration research mainly focuses on the integrated signal design. Due to the similarity between OFDM signals and phaseencoding radars, it is possible to apply OFDM to radar. Aiming at the problem that the randomness of communication data affects the detection capability of OFDM radar, this paper proposes an integrated OFDM radar-communication signal design based on P4 cyclic shift code. And we verified communication BER and radar range and velocity performance for multi-target of the integrated system. The transmitting end carries out an integrated signal design that is consistent with the communication OFDM signal. The degree of system integration is high, and it achieves communication functions without reducing radar detection capability. For the high PAPR problem, we introduce CE-OFDM signals, and derive a radar signal processing algorithm based on FFT demodulation. This paper provides a theoretical basis for applications of OFDM-based integrated signals and it is an effective integrated scheme. Keywords: Radar-communication integration OFDM P4 code CE-OFDM
1 Introduction The development of modern science has enriched various electronic devices but has also caused increasingly complex electromagnetic environment. Electronic equipment brings serious electromagnetic interference to each other, and the maintenance of equipment is also more time-consuming and labor-intensive. In this background, the integrated design of electronic equipment is very necessary. The high degree of similarity between the hardware of the radar equipment and the communication equipment and the sharing of software resources have brought an opportunity to the integrated design of the radar-communication [1]. Among them, the application of OFDM signals to radar for integrated shared waveform design is an option.
© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2019 Published by Springer Nature Switzerland AG 2019. All Rights Reserved S. Han et al. (Eds.): AICON 2019, LNICST 286, pp. 108–119, 2019. https://doi.org/10.1007/978-3-030-22968-9_10
Design of Radar-Communication Integrated Signal Based on OFDM
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Shi et al. proposed three different robust radar waveform design standards based on power minimization [2, 3]. Sit et al. proposed a MIMO-OFDM joint radar-communication system and proposed a system-level interference cancellation algorithm [4]. Herschfelt and Bliss develop and simulate a joint system for a sample multiple access channel [5]. Dokhanchi et al. use phase-modulat
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