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With the increasing penetration of Internet of Vehicles (IoV) in people's lives, the safety and reliability of its communication has to attract our attention. Frequency hopping orthogonal frequency division multiplexing (FH-OFDM) is applied to vehicle networking communication with its excellent communication performance. But the sub-carrier frequency hopping pattern in the traditional FH-OFDM information transmission technology has the risk of being easily detected, which seriously affects the security, concealment and anti-jamming of its information transmission. However, existing anti-jamming methods cannot solve this problem. This paper presents a data driven frequency hopping OFDM (DDFH-OFDM) information transmission method for IoV. This method combines message-driven frequency-hopping technology with frequency-hopping OFDM system. The selection of subcarriers is controlled by using the encrypted partial transmission data instead of the pseudorandom sequence. At the same time, the frequency transmission block mapping rule is designed to make the distribution of frequency-hopping subcarriers more uniform. Through simulation, under the same bit error rate (BER), compared with the FH-OFDM information transmission method, the proposed method has good anti-noise, anti-broadband interference and anti-narrowband interference performance, which further improves the communication performance of IoV. It provides a reference technology for anti-jamming communication applications in IoV scenes.
Zhou et al. (Thu,) studied this question.
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