结合伪随机特征码的多序列跳频通信方法

针对多序列跳频(multi-sequence frequency hopping, MSFH)通信系统在对偶信道存在干扰信号的情况下易引发误码的问题,提出了结合伪随机特征码的MSFH(pseudo-random feature coding MSFH, PRFC-MSFH)通信方法。在信道频率间隔内调制伪随机特征码作为信号来源的特征信息,减少对偶信道受干扰的影响,达到抗干扰目的。建立了PRFC-MSFH发射接收通信模型,根据模型推导了PRFC-MSFH在不同干扰下的误码性能。仿真结果表明, PRFC-MSFH在跟踪干扰条件下较常规跳频约有3~5 dB性能增益,在最坏多音干扰条件下较MSFH有约6~7 dB性能增益,具有较强的综合抗干扰能力。

Multi-sequence frequency hopping communication method combined with pseudo-random feature codes

Aiming at the problem that multi-sequence frequency hopping (MSFH) communication system is prone to error codes in the presence of jamming signal in the complementary channel, a pseudo-random feature coding MSFH (PRFC-MSFH) method is proposed. The pseudo-random feature code is modulated in the frequency interval of the channel as the characteristic information of the signal source, which can reduce the influence of jamming on the complementary channel to achieve the purpose of anti-jamming. The transmission and receiving communication model of PRFC-MSFH are established, and the error code performance of PRFC-MSFH under different interference are deduced according to the model. Simulation results show that under the condition of follower jamming, PRFC-MSFH has a gain of about 3—5 dB compared with conventional frequency hopping and a gain of about 6—7 dB compared with MSFH under the condition of the worst multi-tone jamming. It has strong comprehensive anti-jamming ability.