Abstract
In view of the defects that high range side lobes and high peak-to-average power radio (PAPR) in radar and communication integrated systems based on traditional orthogonal frequency division multiplexing (OFDM), a co-designed OFDM waveform based on Golay block coding for joint radar-communication system is proposed in this paper. The communication information is coded into Golay complementary sequences by Reed-Muller codes, which can not only reduce the PAPR of the system, but also can improve the error correction capability. However, the code rate of the algorithm will decrease rapidly with the increase of the number of subcarriers. Furthermore, the traditional block coding would impact on the final superimposed waveform performance due to phase randomness. Hence, a self-disarrange block coding algorithm is proposed. The radar and communication performance of the designed waveform, including wideband ambiguity function, range profile, PAPR, and bit error rate, is analyzed and simulated. The results demonstrate that the PAPR of the waveform and BER can be reduced effectively, while the range side lobes can be decreased for better radar detection performance.
Highlights
Radar sensing and wireless communication are the most common and important applications in modern radio technology
In this paper, we have investigated a waveform for integrated radar and communication system with orthogonal frequency division multiplexing
The encoded packets are obtained by block coding with Golay complementary sequences
Summary
Radar sensing and wireless communication are the most common and important applications in modern radio technology They are designed and developed independently according to the different functions and frequency bands. In order to improve the availability of limited spectral resources, it is more crucial to exploit an integrated waveform simultaneously performing the radar and communications functions. In view of the above, the waveform design of integrated radar and communication signal with Golay codes for joint application is investigated in this paper. A self-disarrange block coding algorithm is proposed, in order to make the coding algorithm suitable for the condition of a large number of subcarriers and reduce the influence of phase randomness on PAPR performance. The performance of the designed radar-communication integrated waveform, including the ambiguity function, range profile, PAPR and BER is analyzed by theoretical analysis and simulation experiments.
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